Date: Thu, 29 Apr 21 00:30:18 GMT Subject: hep-th daily 14 new + 3 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: hep-th@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Tue 27 Apr 21 18:00:00 GMT to Wed 28 Apr 21 18:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:2104.13377 Date: Tue, 27 Apr 2021 18:00:00 GMT (57kb,D) Title: Soft thermodynamics of gravitational shock wave Authors: Shuwei Liu and Beni Yoshida Categories: hep-th gr-qc quant-ph Comments: 38 pages, 4 figures \\ The gravitational shock waves have provided crucial insights into entanglement structures of black holes in the AdS/CFT correspondence. Recent progress on the soft hair physics suggests that these developments from holography may also be applicable to geometries beyond negatively curved spacetime. In this work, we derive a remarkably simple thermodynamic relation which relates the gravitational shock wave to a microscopic area deformation. Our treatment is based on the covariant phase space formalism and is applicable to any Killing horizon in generic static spacetime which is governed by arbitrary covariant theory of gravity. The central idea is to probe the gravitational shock wave, which shifts the horizon in the $u$ direction, by the Noether charge constructed from a vector field which shifts the horizon in the $v$ direction. As an application, we illustrate its use for the Gauss-Bonnet gravity. We also derive a simplified form of the gravitational scattering unitary matrix and show that its leading-order contribution is nothing but the exponential of the horizon area: $\mathcal{U}=\exp(i \text{Area})$. \\ ( https://arxiv.org/abs/2104.13377 , 57kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13380 Date: Tue, 27 Apr 2021 18:00:00 GMT (946kb,D) Title: Hyperbolic compactification of M-theory and de Sitter quantum gravity Authors: G. Bruno De Luca, Eva Silverstein, Gonzalo Torroba Categories: hep-th \\ We present a mechanism for accelerated expansion of the universe in the generic case of negative-curvature compactifications of M-theory, with minimal ingredients. M-theory on a hyperbolic manifold with small closed geodesics supporting Casimir energy -- along with a single classical source (7-form flux) -- contains an immediate 3-term structure for volume stabilization at positive potential energy. Hyperbolic manifolds are well-studied mathematically, with an important rigidity property at fixed volume. They and their Dehn fillings to more general Einstein spaces exhibit explicit discrete parameters that yield small closed geodesics supporting Casimir energy. The off-shell effective potential derived by M. Douglas incorporates the warped product structure via the constraints of general relativity, screening negative energy. Analyzing the fields sourced by the localized Casimir energy and the available discrete choices of manifolds and fluxes, we find a regime where the net curvature, Casimir energy, and flux compete at large radius and stabilize the volume. Further metric and form field deformations are highly constrained by hyperbolic rigidity and warping effects, leading to calculations giving strong indications of a positive Hessian, and residual tadpoles are small. We test this via explicit back reacted solutions and perturbations in patches including the Dehn filling regions, initiate a neural network study of further aspects of the internal fields, and derive a Maldacena-Nunez style no-go theorem for Anti-de Sitter extrema. A simple generalization incorporating 4-form flux produces axion monodromy inflation. As a relatively simple de Sitter uplift of the large-N M2-brane theory, the construction applies to de Sitter holography as well as to cosmological modeling, and introduces new connections between mathematics and the physics of string/M theory compactifications. \\ ( https://arxiv.org/abs/2104.13380 , 946kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13383 Date: Tue, 27 Apr 2021 18:00:00 GMT (1135kb,D) Title: Entanglement between two gravitating universes Authors: Vijay Balasubramanian, Arjun Kar, Tomonori Ugajin Categories: hep-th Comments: 39 pages, 11 figures Report-no: YITP-21-39 \\ We study two disjoint universes in an entangled pure state. When only one universe contains gravity, the path integral for the $n^{\text{th}}$ R\'enyi entropy includes a wormhole between the $n$ copies of the gravitating universe, leading to a standard "island formula" for entanglement entropy consistent with unitarity of quantum information. When both universes contain gravity, gravitational corrections to this configuration lead to a violation of unitarity. However, the path integral is now dominated by a novel wormhole with $2n$ boundaries connecting replica copies of both universes. The analytic continuation of this contribution involves a quotient by $\mathbb{Z}_n$ replica symmetry, giving a cylinder connecting the two universes. When entanglement is large, this configuration has an effective description as a "swap wormhole", a geometry in which the boundaries of the two universes are glued together by a "swaperator". This description allows precise computation of a generalized entropy-like formula for entanglement entropy. The quantum extremal surface computing the entropy lives on the Lorentzian continuation of the cylinder/swap wormhole, which has a connected Cauchy slice stretching between the universes -- a realization of the ER=EPR idea. The new wormhole restores unitarity of quantum information. \\ ( https://arxiv.org/abs/2104.13383 , 1135kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13387 Date: Tue, 27 Apr 2021 18:00:02 GMT (42kb,D) Title: Effective two-body approach to the hierarchical three-body problem Authors: Adrien Kuntz, Francesco Serra, Enrico Trincherini Categories: hep-th gr-qc Comments: 15 pages, 1 figure \\ The motion of three bodies can be solved perturbatively when a tightly bound inner binary is orbited by a distant perturber, giving rise for example to the well-known Kozai-Lidov oscillations. We propose to study the relativistic hierarchical three-body orbits by adapting the Effective Field Theory techniques used in the two-body problem. This allows us to conveniently treat the inner binary as an effective point-particle, thus reducing the complexity of the three-body problem to a simpler spinning two-body motion. We present in details the mapping between the inner binary osculating elements and the resulting spin of the effective point-particle. Our study builds towards a derivation of three-body analytic waveforms. \\ ( https://arxiv.org/abs/2104.13387 , 42kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13391 Date: Tue, 27 Apr 2021 18:00:03 GMT (54kb,D) Title: Anomalies and Supersymmetry Authors: Ruben Minasian, Ioannis Papadimitriou, Piljin Yi Categories: hep-th Comments: 65 pages Report-no: KIAS-P21011 \\ We revisit quantum field theory anomalies, emphasizing the interplay with diffeomorphisms and supersymmetry. The Ward identities of the latter induce Noether currents of all continuous symmetries, and we point out how these consistent currents are replaced by their covariant form through the appearance of the Bardeen-Zumino currents, which play a central role in our study. For supersymmetry Ward identities, two systematic methods for solving the Wess-Zumino consistency conditions are discussed: anomaly inflow and anomaly descent. The simplest inflows are from supersymmetric Chern-Simons actions in one dimension higher, which are used to supersymmetrize flavor anomalies in $d=4$ and, for $d=2$ $\mathcal{N}=(p,q)$, flavor anomalies with $p,q\leq 3$ and Lorentz-Weyl anomalies with $p,q\leq 6$. Finally, we extend the BRST algebra and the subsequent descent, a necessity for the diffeomorphism anomaly in retrospect. The same modification computes the supersymmetrized anomalies, and determines the above Chern-Simons actions when these exist. \\ ( https://arxiv.org/abs/2104.13391 , 54kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13403 Date: Tue, 27 Apr 2021 18:04:15 GMT (2838kb,D) Title: Scalar lumps in de Sitter -- like spacetime Authors: George Lavrelashvili, Jean-Luc Lehners and Marc Schneider Categories: hep-th Comments: 21 pages, 10 figures \\ We study a self-interacting scalar field theory coupled to gravity and are interested in spherically symmetric solutions with a regular origin surrounded by a horizon. Using the most general spherically symmetric ansatz, we show that in addition to the known static, oscillating solutions discussed earlier in the literature there exist new classes of solutions which appear in the strong field case. For these solutions the spatial sphere shrinks either beyond the horizon, implying a collapsing universe outside of the cosmological horizon, or it shrinks already inside of the horizon, implying the existence of a black hole surrounding the scalar lump in all directions. Crucial for the existence of all such solutions is the presence of a scalar field potential with a barrier that satisfies the swampland conjectures. \\ ( https://arxiv.org/abs/2104.13403 , 2838kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13410 Date: Tue, 27 Apr 2021 18:09:08 GMT (1001kb,D) Title: Does Planck Actually "See" the Bunch-Davies State? Authors: Rose Baunach, Nadia Bolis, R. Holman, Stacie Moltner, Benoit J. Richard Categories: hep-th astro-ph.CO gr-qc Comments: 30 pages, 12 figures \\ To what extent can the Planck satellite observations be interpreted as confirmation of the quantum part of the inflationary paradigm? Has it "seen" the Bunch-Davies state? We compare and contrast the Bunch-Davies interpretation with one using a so-called entangled state in which the fluctuations of a spectator scalar field are entangled with those of the metric perturbations $\zeta$. We first show how a spectator scalar field $\Sigma$, with an expectation value $\sigma(t)$ that evolves in time, will generically generate such a state. We then use this state to compute the power spectrum $P_{\zeta}(k)$ and thence the temperature anisotropies $C_l$ in the Cosmic Microwave Background (CMB). We find interesting differences from the standard calculations using the Bunch-Davies (BD) state. We argue that existing data may already be used to place interesting bounds on this class of deviations from the BD state and that, for some values of the parameters of the state, the power spectra may be consistent with the Planck satellite data. \\ ( https://arxiv.org/abs/2104.13410 , 1001kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13412 Date: Tue, 27 Apr 2021 18:14:24 GMT (7875kb,D) Title: Non-singular cosmological models with strong gravity in the past Authors: Y. Ageeva, P. Petrov, V. Rubakov Categories: hep-th gr-qc Comments: 40 pages, 15 figures Report-no: INR-TH-2021-008 \\ In scalar-tensor Horndeski theories, non-singular cosmological models - bounce and genesis - are problematic because of potential ghost and/or gradient instabilities. One way to get around this obstacle is to send the effective Planck mass to zero in the asymptotic past ("strong gravity in the past"). One may suspect that this feature is a signal of strong coupling problem at early times. However, the classical treatment of the cosmological background is legitimate, provided that the strong coupling energy scale remains at all times much higher than the scale associated with the classical evolution. We construct various models of this sort, namely (i) bouncing Universe which proceeds through inflationary epoch to kination (expansion within GR, driven by massless scalar field); (ii) bouncing Universe with kination stage immediately after bounce; (iii) combination of genesis and bounce, with the Universe starting from flat space-time, then contracting and bouncing to the expansion epoch; (iv) "standard" genesis evading the strong coupling problem in the past. All these models are stable, and perturbations about the backgrounds are not superluminal. \\ ( https://arxiv.org/abs/2104.13412 , 7875kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13413 Date: Tue, 27 Apr 2021 18:14:37 GMT (687kb,D) Title: Spectral representation of the shear viscosity for local scalar QFTs at finite temperature Authors: Peter Lowdon, Ralf-Arno Tripolt, Jan M. Pawlowski, Dirk H. Rischke Categories: hep-th hep-ph nucl-th Comments: 20 pages, 3 figures \\ In local scalar quantum field theories (QFTs) at finite temperature correlation functions are known to satisfy certain non-perturbative constraints, which for two-point functions in particular implies the existence of a generalisation of the standard K\"{a}ll\'{e}n-Lehmann representation. In this work, we use these constraints in order to derive a novel spectral representation for the shear viscosity $\eta$. As an example, we calculate $\eta$ for the thermal particle states in $\phi^{4}$ theory, and establish the leading asymptotic behaviour in the small and large coupling regimes. \\ ( https://arxiv.org/abs/2104.13413 , 687kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13432 Date: Tue, 27 Apr 2021 19:04:21 GMT (26kb) Title: Conformal Block Expansion in Celestial CFT Authors: Alexander Atanasov, Walker Melton, Ana-Maria Raclariu and Andrew Strominger Categories: hep-th Comments: 28 pages, 1 figure \\ The 4D 4-point scattering amplitude of massless scalars via a massive exchange is expressed in a basis of conformal primary particle wavefunctions. This celestial amplitude is expanded in a basis of 2D conformal partial waves on the unitary principal series, and then rewritten as a sum over 2D conformal blocks via contour deformation. The conformal blocks include intermediate exchanges of spinning light-ray states, as well as scalar states with positive integer conformal weights. The conformal block prefactors are found as expected to be quadratic in the celestial OPE coefficients. \\ ( https://arxiv.org/abs/2104.13432 , 26kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13570 Date: Wed, 28 Apr 2021 05:03:50 GMT (87kb,D) Title: Is there supersymmetric Lee-Yang fixed point in three dimensions? Authors: Yu Nakayama Categories: hep-th Comments: 18 pages, 8 figures Report-no: RUP-21-6 \\ The supersymmetric Lee-Yang model is arguably the simplest interacting supersymmetric field theory in two dimensions, albeit non-unitary. A natural question is if there is an analogue of supersymmetric Lee-Yang fixed point in higher dimensions. The absence of any $\mathbb{Z}_2$ symmetry (except for fermion numbers) makes it impossible to approach it by using perturbative $\epsilon$ expansions. We find that the truncated conformal bootstrap suggests that candidate fixed points obtained by the dimensional continuation from two dimensions annihilate below three dimensions, implying that there is no supersymmetric Lee-Yang fixed point in three dimensions. We conjecture that the corresponding phase transition, if any, will be the first order transition. \\ ( https://arxiv.org/abs/2104.13570 , 87kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13680 Date: Wed, 28 Apr 2021 10:07:45 GMT (22kb) Title: WKB periods for higher order ODE and TBA equations Authors: Katsushi Ito, Takayasu Kondo, Kohei Kuroda, Hongfei Shu Categories: hep-th math-ph math.MP Comments: 1+30 pages Report-no: TIT/HEP-684, NORDITA 2021-032 \\ We study the WKB periods for the $(r+1)$-th order ordinary differential equation (ODE) which is obtained by the conformal limit of the linear problem associated with the $A_r^{(1)}$ affine Toda field equation. We compute the quantum corrections by using the Picard-Fuchs operators. The ODE/IM correspondence provides a relation between the Wronskians of the solutions and the Y-functions which satisfy the thermodynamic Bethe ansatz (TBA) equation related to the Lie algebra $A_r$. For the quadratic potential, we propose a formula to show the equivalence between the logarithm of the Y-function and the WKB period, which is confirmed by solving the TBA equation numerically. \\ ( https://arxiv.org/abs/2104.13680 , 22kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13746 Date: Wed, 28 Apr 2021 13:25:58 GMT (24kb) Title: Four-Dimensional Gravity on a Covariant Noncommutative Space (II) Authors: G. Manolakos, P. Manousselis, G. Zoupanos Categories: hep-th gr-qc \\ Based on the construction of the 4-dim noncommutative gravity model described in our previous work, first, a more extended description of the covariant noncommutative space (fuzzy 4-dim de Sitter space), which accommodates the gravity model, is presented and then the corresponding field equations, which are obtained after variation of the previously proposed action, are extracted. Also, a spontaneous breaking of the initial symmetry is performed, this time induced by the introduction of an auxiliary scalar field, and its implications in the reduced theory, which is produced after considering the commutative limit, are examined. \\ ( https://arxiv.org/abs/2104.13746 , 24kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13834 Date: Wed, 28 Apr 2021 15:39:09 GMT (19kb) Title: Rotating stealth black holes with a cohomogeneity-1 metric Authors: Olaf Baake and Mokhtar Hassaine Categories: hep-th gr-qc Comments: 19 pages \\ In five dimensions we consider a general shift symmetric and parity preserving scalar tensor action that contains up to second order covariant derivatives of the scalar field. A rotating stealth black hole solution is constructed where the metric is given by the Myers-Perry spacetime with equal momenta and the scalar field is identified with the Hamilton-Jacobi potential. This nontrivial scalar field has an extra hair associated with the rest mass of the test particle, and the solution does not require any fine tuning of the coupling functions of the theory. Interestingly enough, we show that the disformal transformation, generated by this scalar field, and with a constant degree of disformality, leaves invariant (up to diffeomorphisms) the Myers-Perry metric with equal momenta. This means that the hair of the scalar field, along with the constant disformality parameter, can be consistently absorbed into further redefinitions of the mass and of the single angular parameter of the disformed metric. These results are extended in higher odd dimensions with a Myers-Perry metric for which all the momenta are equal. The key of the invariance under disformal transformation of the metric is mainly the cohomogeneity-1 character of the Myers-Perry metric with equal momenta. Starting from this observation, we consider a general class of cohomogeneity-1 metrics in arbitrary dimension, and we list the conditions ensuring that this class of metrics remain invariant (up to diffeomorphisms) under a disformal transformation with a constant degree of disformality and with a scalar field with constant kinetic term. The extension to the Kerr-(A)dS case is also considered where it is shown that rotating stealth solutions may exist provided some fine tuning of the coupling functions of the scalar tensor theory. \\ ( https://arxiv.org/abs/2104.13834 , 19kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:2104.13206 (*cross-listing*) Date: Tue, 27 Apr 2021 14:12:22 GMT (28kb) Title: WDVV equations and invariant bi-Hamiltonian formalism Authors: Jakub Va\v{s}\'i\v{c}ek, Raffaele Vitolo Categories: math-ph hep-th math.MP nlin.SI Comments: 37 pages, no figures MSC-class: 37K05, 37K10, 37K20, 37K25 \\ The purpose of the paper is to show that, in low dimensions, the WDVV equations are bi-Hamiltonian. The invariance of the bi-Hamiltonian formalism is proved for $N=3$. More examples in higher dimensions show that the result might hold in general. The invariance group of the bi-Hamiltonian pairs that we find for WDVV equations is the group of projective transformations. The significance of projective invariance of WDVV equations is discussed in detail. The computer algebra programs that were used for calculations throughout the paper are provided in a GitHub repository. \\ ( https://arxiv.org/abs/2104.13206 , 28kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13569 (*cross-listing*) Date: Wed, 28 Apr 2021 05:01:13 GMT (36kb) Title: Veltman, renormalizability, calculability Authors: Giampiero Passarino Categories: hep-ph hep-th Comments: to appear in Acta Physica Polonica, 27 pages \\ Dedicated to the memory of Prof. Veltman, one of the founding fathers of our discipline: his legacy lives on. Many times we have to turn back and follow his footprints to find the right path. After reviewing general aspects of high energy physics where he gave a seminal contribution we will introduce recent developments in the standard model effective field theory, showing how the whole movement from renormalization to predictions plays from Veltman to SMEFT. \\ ( https://arxiv.org/abs/2104.13569 , 36kb) ------------------------------------------------------------------------------ \\ arXiv:2104.13726 (*cross-listing*) Date: Wed, 28 Apr 2021 12:23:31 GMT (415kb,D) Title: Negative radiation pressure on an ensemble of atoms in free space Authors: Navdeep Arya, Navketan Batra, Kinjalk Lochan and Sandeep K. Goyal Categories: quant-ph gr-qc hep-th Comments: Comments are welcome \\ Light is known to exert a pushing force through the radiation pressure on any surface it is incident upon, via the transfer of momentum from the light to the surface. For an atom, the interaction with light can lead to both absorption as well as emission of photons, leading to repulsive and attractive forces, respectively. For classical light, these two processes occur at the same rates. Therefore, a thermal ensemble of atoms at a finite temperature always experiences a net pushing force. In this paper, we show that when treated quantum mechanically the pulsed electromagnetic field interacting with the thermal ensemble of atoms leads to unequal transition rates, again resulting in a non-zero net force. However, the signature and the magnitude of the force depends upon the intensity of the light, the number of atoms, and the initial temperature of the ensemble. Thus, even at finite temperature, controlling the parameters of the electromagnetic pulse and the number of particles in the ensemble, the net force can be changed from repulsive to attractive, generating negative radiation pressure in the process. Quite counterintuitively, this negative radiation pressure arising out of pure quantum character of light gets stronger for higher temperatures. \\ ( https://arxiv.org/abs/2104.13726 , 415kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1811.12415 (*cross-listing*) replaced with revised version Wed, 28 Apr 2021 15:01:21 GMT (4100kb,D) Title: Interacting spin-3/2 fermions in a Luttinger semimetal: Competing phases and their selection in the global phase diagram Authors: Andras Szabo, Roderich Moessner, Bitan Roy Categories: cond-mat.str-el cond-mat.mes-hall hep-th Comments: Published version: 36 pages, 21 figures, 4 tables (full abstract: see main text) Journal-ref: Phys. Rev. B 103, 165139 (2021) DOI: 10.1103/PhysRevB.103.165139 \\ ( https://arxiv.org/abs/1811.12415 , 4100kb) ------------------------------------------------------------------------------ \\ arXiv:1903.03608 replaced with revised version Wed, 28 Apr 2021 08:56:38 GMT (21kb,D) Title: F-theory models with 3 to 8 U(1) factors on K3 surfaces Authors: Yusuke Kimura Categories: hep-th Comments: 34 pages Report-no: KEK-TH-2108 \\ ( https://arxiv.org/abs/1903.03608 , 21kb) ------------------------------------------------------------------------------ \\ arXiv:2005.08428 (*cross-listing*) replaced with revised version Wed, 28 Apr 2021 04:44:20 GMT (20kb,D) Title: Cosmology and gravitational waves in consistent $D\to 4$ Einstein-Gauss-Bonnet gravity Authors: Katsuki Aoki, Mohammad Ali Gorji, and Shinji Mukohyama Categories: gr-qc astro-ph.CO hep-th Comments: 18 pages, no figures, new subsection added, accepted for publication in JCAP, observational constraints corrected Report-no: YITP-20-72, IPMU20-0058 \\ ( https://arxiv.org/abs/2005.08428 , 20kb) ------------------------------------------------------------------------------ \\ arXiv:2005.10759 replaced with revised version Tue, 27 Apr 2021 18:19:49 GMT (27kb) Title: ${\mathbb Z}_2\times {\mathbb Z}_2$-graded mechanics: the quantization Authors: N. Aizawa, Z. Kuznetsova and F. Toppan Categories: hep-th math-ph math.MP Comments: 30 pages. Final version to appear in Nucl. Phys. B Report-no: Preprint CBPF-NF-003/20 \\ ( https://arxiv.org/abs/2005.10759 , 27kb) ------------------------------------------------------------------------------ \\ arXiv:2007.12735 (*cross-listing*) replaced with revised version Wed, 28 Apr 2021 16:03:16 GMT (50kb) Title: On ribbon categories for singlet vertex algebras Authors: Thomas Creutzig, Robert McRae, Jinwei Yang Categories: math.QA hep-th math.CT math.RT Comments: 66 pages, final version incorporating referee suggestions, to appear in Comm. Math. Phys MSC-class: 17B69, 18M15, 81R10, 81T40 \\ ( https://arxiv.org/abs/2007.12735 , 50kb) ------------------------------------------------------------------------------ \\ arXiv:2008.01740 replaced with revised version Wed, 28 Apr 2021 10:43:07 GMT (265kb,D) Title: A physical protocol for observers near the boundary to obtain bulk information in quantum gravity Authors: Chandramouli Chowdhury, Olga Papadoulaki and Suvrat Raju Categories: hep-th gr-qc Comments: 32 pages; (v2) refs added; minor textual clarifications \\ ( https://arxiv.org/abs/2008.01740 , 265kb) ------------------------------------------------------------------------------ \\ arXiv:2010.00695 (*cross-listing*) replaced with revised version Tue, 27 Apr 2021 21:22:22 GMT (303kb,D) Title: Inference of neutrino flavor evolution through data assimilation and neural differential equations Authors: Ermal Rrapaj, Amol V. Patwardhan, Eve Armstrong, George Fuller Categories: astro-ph.HE hep-th physics.comp-ph Report-no: N3AS-20-009 Journal-ref: Phys. Rev. D 103, 043006 (2021) DOI: 10.1103/PhysRevD.103.043006 \\ ( https://arxiv.org/abs/2010.00695 , 303kb) ------------------------------------------------------------------------------ \\ arXiv:2011.02965 (*cross-listing*) replaced with revised version Wed, 28 Apr 2021 15:04:12 GMT (1668kb,D) Title: Local Structure of Sprinkled Causal Sets Authors: Christopher J. Fewster, Eli Hawkins, Christoph Minz, Kasia Rejzner Categories: gr-qc hep-th Journal-ref: Phys. Rev. D 103 (2021), 086020 DOI: 10.1103/PhysRevD.103.086020 \\ ( https://arxiv.org/abs/2011.02965 , 1668kb) ------------------------------------------------------------------------------ \\ arXiv:2012.01429 replaced with revised version Wed, 28 Apr 2021 15:46:09 GMT (55kb,D) Title: Lorentzian Dynamics and Factorization Beyond Rationality Authors: Chi-Ming Chang, Ying-Hsuan Lin Categories: hep-th Comments: 41+30 pages, 2 figures, 2 tables; v2: significant updates, enriched discussion on non-compact TDLs, extended scope of opacity bound, added TDL fusion rule in orbifold theory; v3: minor revision Report-no: CALT-TH-2020-054 \\ ( https://arxiv.org/abs/2012.01429 , 55kb) ------------------------------------------------------------------------------ \\ arXiv:2012.10325 replaced with revised version Tue, 27 Apr 2021 19:42:19 GMT (2062kb,D) Title: Exploring instantons with spin-lattice systems Authors: Sebastian Schenk and Michael Spannowsky Categories: hep-th cond-mat.mes-hall Comments: 11 pages, 5 figures. v2: minor modifications and references added Report-no: IPPP/20/53 \\ ( https://arxiv.org/abs/2012.10325 , 2062kb) ------------------------------------------------------------------------------ \\ arXiv:2101.06094 (*cross-listing*) replaced with revised version Tue, 27 Apr 2021 18:10:43 GMT (401kb,D) Title: Is Asymptotically Weyl-Invariant Gravity Viable? Authors: Daniel Coumbe Categories: gr-qc hep-th Comments: 14 pages, 6 figures, 3 tables. References added. Conforms with version published in PRD DOI: 10.1103/PhysRevD.103.084050 \\ ( https://arxiv.org/abs/2101.06094 , 401kb) ------------------------------------------------------------------------------ \\ arXiv:2103.06827 replaced with revised version Wed, 28 Apr 2021 11:10:47 GMT (27kb) Title: Starobinksy Inflation, Gravitational Contact Terms and the Induced BEH Boson Mass Authors: Christopher T. Hill and Graham G. Ross Categories: hep-th gr-qc Report-no: FERMILAB-PUB-21-074-T, OUTP-21-067P \\ ( https://arxiv.org/abs/2103.06827 , 27kb) ------------------------------------------------------------------------------ \\ arXiv:2104.02546 replaced with revised version Wed, 28 Apr 2021 09:31:02 GMT (13kb) Title: Subsubleading soft graviton symmetry and MHV graviton scattering amplitudes Authors: Shamik Banerjee, Sudip Ghosh, Sai Satyam Samal Categories: hep-th Comments: 15 pages, Latex, References added \\ ( https://arxiv.org/abs/2104.02546 , 13kb) ------------------------------------------------------------------------------ \\ arXiv:2104.09900 replaced with revised version Wed, 28 Apr 2021 10:18:21 GMT (69kb) Title: Exceptional complex structures and the hypermultiplet moduli of 5d Minkowski compactifications of M-theory Authors: David Tennyson, Daniel Waldram Categories: hep-th math.DG Comments: Orientation error fixed in equation (4.19) \\ ( https://arxiv.org/abs/2104.09900 , 69kb) ------------------------------------------------------------------------------ \\ arXiv:2104.12535 replaced with revised version Tue, 27 Apr 2021 19:05:28 GMT (10kb) Title: Representations of Extended Carroll Group Authors: G.X.A. Petronilo, S.C. Ulhoa, A. E. Santana Categories: hep-th Comments: 7 pages, no figures \\ ( https://arxiv.org/abs/2104.12535 , 10kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- For subscribe options to combined physics archives, e-mail To: physics@arxiv.org, Subject: subscribe ----------------------------------------------------------------------------- For help on viewing and making submissions, see http://arxiv.org/help/