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. 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. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3

Small bits of cold dense matter / Gandolfi, S.; Carlson, J.; Roggero, A.; Lynn, J. E.; Reddy, S.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 785:(2018), pp. 232-237. [10.1016/j.physletb.2018.07.073]

Small bits of cold dense matter

Roggero A.;
2018-01-01

Abstract

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. 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. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3
2018
Gandolfi, S.; Carlson, J.; Roggero, A.; Lynn, J. E.; Reddy, S.
Small bits of cold dense matter / Gandolfi, S.; Carlson, J.; Roggero, A.; Lynn, J. E.; Reddy, S.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 785:(2018), pp. 232-237. [10.1016/j.physletb.2018.07.073]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/312937
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