Small bits of cold dense matter

Gandolfi, Stefano; Carlson, Joseph Allen; Roggero, Alessandro; Lynn, Joel E.; Reddy, Sanjay

doi:10.1016/j.physletb.2018.07.073

Title: Small bits of cold dense matter

Journal Article · 31 August 2018 · Physics Letters. B

DOI: https://doi.org/10.1016/j.physletb.2018.07.073 · OSTI ID:1467949

^[1];

^[2]; Lynn, Joel E. ^[3]; Reddy, Sanjay ^[4]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Washington, Seattle, WA (United States). Inst. for Nuclear Theory
Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik; GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany). ExtreMe Matter Inst. EMMI
Univ. of Washington, Seattle, WA (United States). Inst. for Nuclear Theory

The behavior of QCD at high baryon density and low temperature is crucial to understanding the properties of neutron stars and gravitational waves emitted during their mergers. Here in this paper we study small systems of baryons in periodic boundary conditions to probe the properties of QCD at high baryon density. By comparing calculations based on nucleon degrees of freedom to simple quark models we show that specific features of the nuclear spectrum, including shell structure and nucleon pairing, emerge if nucleons are the primary degrees of freedom. Very small systems should also be amenable to studies in lattice QCD, unlike larger systems where the fermion sign problem is much more severe. Through comparisons of lattice QCD and nuclear calculations it should be possible to gain, at least at a semi-quantitative level, more understanding of the cold dense equation of state as probed in neutron stars.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); European Research Council (ERC); German Federal Ministry of Education and Research (BMBF)

Grant/Contract Number:: AC52-06NA25396; AST-1333607; 307986; 05P15RDFN1; FG02-00ER41132; AC02-05CH11231

OSTI ID:: 1467949

Alternate ID(s):: OSTI ID: 1471358

Report Number(s):: LA-UR-17-31503

Journal Information:: Physics Letters. B, Vol. 785, Issue C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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