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Numerical portrait of a relativistic thin film BCS superfluid

Simon Hands, Susan Morrison, Biagio Lucini Orcid Logo

Physical Review D, Volume: "D65", Issue: 3, Start page: 036004

Swansea University Author: Biagio Lucini Orcid Logo

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DOI (Published version): 10.1103/PhysRevD.65.036004

Abstract

We present results of numerical simulations of the 2+1d Nambu - Jona-Lasinio model with a non-zero baryon chemical potential mu including the effects of a diquark source term. Diquark condensates, susceptibilities and masses are measured as functions of source strength j. The results suggest that di...

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Published in: Physical Review D
ISSN: 0556-2821 1089-4918
Published: 2001
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URI: https://cronfa.swan.ac.uk/Record/cronfa27961
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first_indexed 2016-05-15T01:22:54Z
last_indexed 2018-02-09T05:11:35Z
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spelling 2016-05-14T16:42:28.0311943 v2 27961 2016-05-14 Numerical portrait of a relativistic thin film BCS superfluid 7e6fcfe060e07a351090e2a8aba363cf 0000-0001-8974-8266 Biagio Lucini Biagio Lucini true false 2016-05-14 SMA We present results of numerical simulations of the 2+1d Nambu - Jona-Lasinio model with a non-zero baryon chemical potential mu including the effects of a diquark source term. Diquark condensates, susceptibilities and masses are measured as functions of source strength j. The results suggest that diquark condensation does not take place in the high density phase mu>mu_c, but rather that the condensate scales non-analytically with j implying a line of critical points and long range phase coherence. Analogies are drawn with the low temperature phase of the 2d XY model. The spectrum of the spin-1/2 sector is also studied yielding the quasiparticle dispersion relation. There is no evidence for a non-zero gap; rather the results are characteristic of a normal Fermi liquid with Fermi velocity less than that of light. We conclude that the high density phase of the model describes a relativistic gapless thin film BCS superfluid. Journal Article Physical Review D "D65" 3 036004 0556-2821 1089-4918 30 9 2001 2001-09-30 10.1103/PhysRevD.65.036004 http://inspirehep.net/record/562280 COLLEGE NANME Mathematics COLLEGE CODE SMA Swansea University 2016-05-14T16:42:28.0311943 2016-05-14T16:42:27.8439931 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Simon Hands 1 Susan Morrison 2 Biagio Lucini 0000-0001-8974-8266 3
title Numerical portrait of a relativistic thin film BCS superfluid
spellingShingle Numerical portrait of a relativistic thin film BCS superfluid
Biagio Lucini
title_short Numerical portrait of a relativistic thin film BCS superfluid
title_full Numerical portrait of a relativistic thin film BCS superfluid
title_fullStr Numerical portrait of a relativistic thin film BCS superfluid
title_full_unstemmed Numerical portrait of a relativistic thin film BCS superfluid
title_sort Numerical portrait of a relativistic thin film BCS superfluid
author_id_str_mv 7e6fcfe060e07a351090e2a8aba363cf
author_id_fullname_str_mv 7e6fcfe060e07a351090e2a8aba363cf_***_Biagio Lucini
author Biagio Lucini
author2 Simon Hands
Susan Morrison
Biagio Lucini
format Journal article
container_title Physical Review D
container_volume "D65"
container_issue 3
container_start_page 036004
publishDate 2001
institution Swansea University
issn 0556-2821
1089-4918
doi_str_mv 10.1103/PhysRevD.65.036004
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
url http://inspirehep.net/record/562280
document_store_str 0
active_str 0
description We present results of numerical simulations of the 2+1d Nambu - Jona-Lasinio model with a non-zero baryon chemical potential mu including the effects of a diquark source term. Diquark condensates, susceptibilities and masses are measured as functions of source strength j. The results suggest that diquark condensation does not take place in the high density phase mu>mu_c, but rather that the condensate scales non-analytically with j implying a line of critical points and long range phase coherence. Analogies are drawn with the low temperature phase of the 2d XY model. The spectrum of the spin-1/2 sector is also studied yielding the quasiparticle dispersion relation. There is no evidence for a non-zero gap; rather the results are characteristic of a normal Fermi liquid with Fermi velocity less than that of light. We conclude that the high density phase of the model describes a relativistic gapless thin film BCS superfluid.
published_date 2001-09-30T03:33:59Z
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score 10.997637

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