Date: Wed, 30 May 12 00:08:47 GMT Subject: nucl-th daily 1 new + 4 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: nucl-th@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Mon 28 May 12 20:00:00 GMT to Tue 29 May 12 20:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1205.6268 Date: Tue, 29 May 2012 05:41:44 GMT (142kb) Title: Neutron shell structure and deformation in neutron-drip-line nuclei Authors: Ikuko Hamamoto Categories: nucl-th Comments: 16 pages, 4 figures \\ Neutron shell-structure and the resulting possible deformation in the neighborhood of neutron-drip-line nuclei are systematically discussed, based on both bound and resonant neutron one-particle energies obtained from spherical and deformed Woods-Saxon potentials. Due to the unique behavior of weakly-bound and resonant neutron one-particle levels with smaller orbital angular-momenta $\ell$, a systematic change of the shell structure and thereby the change of neutron magic-numbers are pointed out, compared with those of stable nuclei expected from the conventional j-j shell-model. For spherical shape with the operator of the spin-orbit potential conventionally used, the $\ell_{j}$ levels belonging to a given oscillator major shell with parallel spin- and orbital-angular-momenta tend to gather together in the energetically lower half of the major shell, while those levels with anti-parallel spin- and orbital-angular-momenta gather in the upper half. The tendency leads to a unique shell structure and possible deformation when neutrons start to occupy the orbits in the lower half of the major shell. Among others, the neutron magic-number N=28 disappears and N=50 may disappear, while the magic number N=82 may presumably survive due to the large $\ell =5$ spin-orbit splitting for the $1h_{11/2}$ orbit. On the other hand, an appreciable amount of energy gap may appear at N=16 and 40 for spherical shape, while neutron-drip-line nuclei in the region of neutron number above N=20, 40 and 82, namely N $\approx$ 21-28, N $\approx$ 41-54, and N $\approx$ 83-90, may be quadrupole-deformed, in the case that the proton number allows the deformation. \\ ( http://arxiv.org/abs/1205.6268 , 142kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1205.4815 (*cross-listing*) Date: Tue, 22 May 2012 06:25:08 GMT (1476kb,D) Title: Effective-Range Dependence of Resonantly Interacting Fermions Authors: Michael McNeil Forbes, Stefano Gandolfi, Alexandros Gezerlis Categories: cond-mat.quant-gas nucl-th Comments: 11 pages, 5 figures Report-no: LA-UR-12-21036; INT-PUB-12-022 \\ We extract the leading effective range corrections to the equation of state of the unitary Fermi gas from ab initio FNQMC calculations in a periodic box using a DFT, and show them to be universal by considering several different two-body interactions. Furthermore, we find that the DFT is consistent with the best available unbiased QMC calculations, analytic results, and experimental measurements of the equation of state. We also discuss the asymptotic effective-range corrections for trapped systems and present the first QMC results with the correct asymptotic scaling. \\ ( http://arxiv.org/abs/1205.4815 , 1476kb) ------------------------------------------------------------------------------ \\ arXiv:1205.6284 (*cross-listing*) Date: Tue, 29 May 2012 07:39:19 GMT (3611kb) Title: Core-Collapse Supernovae as Supercomputing Science: a status report toward 6D simulations with exact Boltzmann neutrino transport in full general relativity Authors: Kei Kotake, Kohsuke Sumiyoshi, Shoichi Yamada, Tomoya Takiwaki, Takami Kuroda, Yudai Suwa, and Hiroki Nagakura Categories: astro-ph.HE gr-qc hep-ph nucl-th Comments: 40 pages, 21 figures, submitted to Progress of Theoretical and Experimental Physics \\ This is a status report on our endeavor to reveal the mechanism of core-collapse supernovae (CCSNe) by large-scale numerical simulations. Multi-dimensionality of the supernova engine, general relativisitic magnetohydrodynamics, energy and lepton number transport by neutrinos emitted from the forming neutron star as well as nuclear interactions there, are all believed to play crucial roles in repelling infalling matter and producing energetic explosions. These ingredients are nonlinearly coupled with one another in the dynamics of core-collapse, bounce, and shock expansion. Serious quantitative studies of CCSNe hence make extensive numerical computations mandatory. Since neutrinos are neither in thermal nor in chemical equilibrium in general, their distributions in the phase space should be computed. This is a six dimensional (6D) neutrino transport problem and quite a challenge even for those with an access to the most advanced numerical resources such as the "K computer". To tackle this problem, we have embarked on multi-front efforts. In particular we report in this paper our recent progresses in the treatments of multi-dimensional (multi-D) radiation-hydrodynamics. We are currently proceeding on two different paths to the ultimate goal; in one approach we employ an approximate but highly efficient scheme for neutrino transport and treat 3D hydrodynamics and/or general relativity rigorously; some neutrino-driven explosions will be presented and comparisons will be made between 2D and 3D models quantitatively; in the second approach, on the other hand, exact but so far Newtonian Boltzmann equations are solved in two and three spatial dimensions; we will show some demonstrative test simulations. We will also address the perspectives of exa-scale computations on the next generation supercomputers. \\ ( http://arxiv.org/abs/1205.6284 , 3611kb) ------------------------------------------------------------------------------ \\ arXiv:1205.6354 (*cross-listing*) Date: Tue, 29 May 2012 13:17:38 GMT (9kb) Title: Fermion condensation around a Coulomb impurity in a Weyl semimetal as a manifestation of the Landau zero-charge problem Authors: Eugene B. Kolomeisky and Joseph P. Straley Categories: cond-mat.mes-hall hep-th nucl-th Comments: 4+0 pages \\ A Coulomb impurity placed in an undoped Weyl semimetal spontaneously surrounds itself with a cloud of condensed Weyl fermions. We study this system within the Thomas-Fermi approximation. We find that the ground-state of the system is electrically neutral and exhibits an experimentally accessible Landau zero-charge effect: the impurity charge is screened out at any finite distance in the limit of vanishing impurity size. Specifically, we show how in this limit the Thomas-Fermi equation for the electrostatic potential transforms into the Gell-Mann-Low equation for the charge. \\ ( http://arxiv.org/abs/1205.6354 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1205.6462 (*cross-listing*) Date: Tue, 29 May 2012 19:39:58 GMT (67kb) Title: Parton energy loss in glasma Authors: P. Aurenche and B. G. Zakharov Categories: hep-ph nucl-th Comments: 14 pages, 3 figures \\ We study the synchrotron-like gluon emission in $AA$-collisions from fast partons due to interaction with the coherent glasma color fields. Our results show that for RHIC and LHC conditions the contribution of this mechanism to parton energy loss is much smaller than the radiative energy loss in the plasma phase. \\ ( http://arxiv.org/abs/1205.6462 , 67kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1112.6105 replaced with revised version Tue, 29 May 2012 14:23:30 GMT (456kb) Title: On the near-threshold peak structure in the differential cross section of \phi-meson photoproduction: indication of a missing resonance with non-negligible strangeness content Authors: Alvin Kiswandhi, Shin Nan Yang Categories: nucl-th hep-ph \\ ( http://arxiv.org/abs/1112.6105 , 456kb) ------------------------------------------------------------------------------ \\ arXiv:1202.3902 replaced with revised version Tue, 29 May 2012 15:57:04 GMT (562kb) Title: Skyrme Interaction and Nuclear Matter Constraints Authors: M. Dutra, O. Louren\c{c}o, J. S. S\'a Martins, A. Delfino, J. R. Stone, and P. D. Stevenson Categories: nucl-th astro-ph.SR Comments: 86 pages, 14 figures Journal-ref: Phys.Rev.C85:035201,2012 DOI: 10.1103/PhysRevC.85.035201 \\ ( http://arxiv.org/abs/1202.3902 , 562kb) ------------------------------------------------------------------------------ \\ arXiv:1205.5294 (*cross-listing*) replaced with revised version Tue, 29 May 2012 16:21:10 GMT (637kb,D) Title: Partial-wave analysis of {\pi}-p {\to} {\eta}n and {\pi}-p {\to} K0{\Lambda} reactions Authors: M. Shrestha and D. M. Manley Categories: hep-ph hep-ex nucl-ex nucl-th Comments: 20 pages, 5 figures \\ ( http://arxiv.org/abs/1205.5294 , 637kb) ------------------------------------------------------------------------------ \\ arXiv:1205.5986 replaced with revised version Tue, 29 May 2012 07:04:17 GMT (402kb) Title: Interpretation of the large-deformation high spin bands in selected A=158-168 nuclei Authors: A. Kardan, I. Ragnarsson, H. Miri-Hakimabad, and L. Rafat-Motevali Categories: nucl-th Comments: Submitted to Physical Review C 20 pages, 18 figures \\ ( http://arxiv.org/abs/1205.5986 , 402kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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/ For a list of archive mirror sites, see http://arXiv.org/servers.html ----------------------------------------------------------------------------- Third-party submissions cause excessive problems. Author self-submissions are exceedingly preferred. E-mail submissions have been discontinued in favor of better support for Web submissions. See http://arXiv.org/help/uploads