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Nuclear Theory·nucl-th

Thursday·January 8, 2015

7 papers—3 primary·4 cross-listed

All7Primary3Cross-lists4
  1. 04

    [Submitted on 6 Jan 2015] (cross-list from hep-ph)

    Topology, magnetic field, and strongly interacting matter

    Dmitri E. Kharzeev🇺🇸

    Gauge theories with compact symmetry groups possess topologically non-trivial configurations of gauge field. This has dramatic implications for the vacuum structure of Quantum Chromo-Dynamics (QCD) and for the behavior of QCD plasma, as well as for condensed matter systems with chiral quasiparticles. I review the current status of the problem with an emphasis on the interplay of chirality with a background magnetic field, and on the observable manifestations of topology in heavy ion collisions, Dirac semimetals, neutron stars, and in the Early Universe.

    Comments:
    47 pages, 12 figures; prepared for the Annual Review of Nuclear and Particle Science
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
    arXiv:
    1501.01336 [pdf]
    Ann.Rev.Nucl.Part.Sci.(2015)·97 citations
  2. 05

    [Submitted on 7 Jan 2015] (cross-list from physics.comp-ph)

    On Fermionic Shadow Wave Functions for strongly-correlated multi-reference systems based on a single Slater determinant

    F. Calcavecchia · T. D. Kühne

    We demonstrate that extending the Shadow Wave Function to fermionic systems facilitates to accurately calculate strongly-correlated multi-reference systems such as the stretched H2 molecule. This development considerably extends the scope of electronic structure calculations and enables to efficiently recover the static correlation energy using just a single Slater determinant.

    Comments:
    6 pages, 2 figures
    Subjects:
    Computational Physics (physics.comp-ph); Strongly Correlated Electrons (cond-mat.str-el); Nuclear Theory (nucl-th); physics.chem-ph (physics.chem-ph); Quantum Physics (quant-ph)
    arXiv:
    1501.01428 [pdf]
    EPL(2015)·4 citations
  3. 06

    [Submitted on 7 Jan 2015] (cross-list from nucl-ex)

    Predicting the production of neutron rich heavy nuclei in multi-nucleon transfer reactions using GRAZING-F

    R. Yanez · W. Loveland

    Background: Multi-nucleon transfer reactions have recently attracted attention as a possible path to the synthesis of new neutron-rich heavy nuclei. Purpose: We study transfer reactions involving massive nuclei with the intention of understanding if the semi-classical model GRAZING coupled to an evaporation and fission competition model can satisfactory reproduce experimental data on transfer reactions in which fission plays a role. Methods: We have taken the computer code GRAZING and have added fission competition to it (GRAZING-F) using our current understanding of , fission barriers and level densities. Results: The code GRAZING-F seems to satisfactory reproduce experimental data for , and transfers, but has limitations in reproducing measurements of larger above-target and below-target transfers. Nonetheless, we use GRAZING-F to estimate production rates of neutron-rich nuclei, actinides and transactinides. Conclusions: The GRAZING code, with appropriate modifications to account for fission decay as well as neutron emission by excited primary fragments, does not predict large cross sections for multi-nucleon transfer reactions leading to neutron-rich transactinide nuclei, but predicts opportunities to produce new neutron-rich actinide isotopes.

    Comments:
    Addendum: R. Yanez and W. Loveland, A web interface to GRAZING-F (grazingf.oregonstate.edu)
    Subjects:
    Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    1501.01568 [pdf]
    PRC(2015)·83 citations
  4. 07

    [Submitted on 7 Jan 2015] (cross-list from hep-ph)

    Mott-Anderson freeze-out and the strange matter "horn"

    M. Naskret🇨🇭 · D. Blaschke🇵🇱 · A. Dubinin🇵🇱

    We discuss the -dependence of the ratio in heavy-ion collisions (the "horn" effect) within a Mott-Anderson localization model for chemical freeze-out. The different response of pion and kaon radii to the hot and dense hadronic medium results in different freeze-out conditions. We demonstrate within a simple model that this circumstance enhances the "horn" effect relative to statistical models with universal chemical freeze-out.

    Comments:
    8 pages, 4 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1501.01599 [pdf]
    Phys.Part.Nucl.(2015)·9 citations

Affiliations

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