Small bits of cold dense matter
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 bary...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-10-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269318306841 |
| _version_ | 1818267694888124416 |
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| author | S. Gandolfi J. Carlson A. Roggero J.E. Lynn S. Reddy |
| author_facet | S. Gandolfi J. Carlson A. Roggero J.E. Lynn S. Reddy |
| author_sort | S. Gandolfi |
| collection | DOAJ |
| description | 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. Keywords: Neutron Matter, Quantum Monte Carlo, Lattice QCD, Pairing |
| first_indexed | 2024-12-12T20:26:40Z |
| format | Article |
| id | doaj.art-9131112d527a4a1fa4ea445c8f09cba5 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-12T20:26:40Z |
| publishDate | 2018-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-9131112d527a4a1fa4ea445c8f09cba52022-12-22T00:13:07ZengElsevierPhysics Letters B0370-26932018-10-01785232237Small bits of cold dense matterS. Gandolfi0J. Carlson1A. Roggero2J.E. Lynn3S. Reddy4Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USATheoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USATheoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA; Institute for Nuclear Theory, University of Washington, Seattle, WA 98195, United States of America; Corresponding author.Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, GermanyInstitute for Nuclear Theory, University of Washington, Seattle, WA 98195, United States of AmericaThe 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. Keywords: Neutron Matter, Quantum Monte Carlo, Lattice QCD, Pairinghttp://www.sciencedirect.com/science/article/pii/S0370269318306841 |
| spellingShingle | S. Gandolfi J. Carlson A. Roggero J.E. Lynn S. Reddy Small bits of cold dense matter Physics Letters B |
| title | Small bits of cold dense matter |
| title_full | Small bits of cold dense matter |
| title_fullStr | Small bits of cold dense matter |
| title_full_unstemmed | Small bits of cold dense matter |
| title_short | Small bits of cold dense matter |
| title_sort | small bits of cold dense matter |
| url | http://www.sciencedirect.com/science/article/pii/S0370269318306841 |
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