Mesonic correlation functions at finite temperature and density in the Nambu–Jona-Lasinio model with a Polyakov loop
We investigate the properties of scalar and pseudo-scalar mesons at finite temperature and quark chemical potential in the framework of the Nambu-Jona-Lasinio (NJL) model coupled to the Polyakov loop (PNJL model) with the aim of taking into account features of both chiral symmetry breaking and decon...
Gespeichert in:
| Veröffentlicht in: | Physical review. D 2007-03, Vol.75 (6), Article 065004 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | 6 |
| container_start_page | |
| container_title | Physical review. D |
| container_volume | 75 |
| creator | Hansen, H. Alberico, W. M. Beraudo, A. Molinari, A. Nardi, M. Ratti, C. |
| description | We investigate the properties of scalar and pseudo-scalar mesons at finite temperature and quark chemical potential in the framework of the Nambu-Jona-Lasinio (NJL) model coupled to the Polyakov loop (PNJL model) with the aim of taking into account features of both chiral symmetry breaking and deconfinement. The mesonic correlators are obtained by solving the Schwinger-Dyson equation in the RPA approximation with the Hartree (mean field) quark propagator at finite temperature and density. In the phase of broken chiral symmetry a narrower width for the sigma meson is obtained with respect to the NJL case; on the other hand, the pion still behaves as a Goldstone boson. When chiral symmetry is restored, the pion and sigma spectral functions tend to merge. The Mott temperature for the pion is also computed. |
| doi_str_mv | 10.1103/PhysRevD.75.065004 |
| format | Article |
| fullrecord | <record><control><sourceid>hal_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_21020183</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>oai_HAL_in2p3_00449379v1</sourcerecordid><originalsourceid>FETCH-LOGICAL-c355t-d37e2548a4a772a7d12d15317a078e349b7a4df355b70ea46be879676a0bb4193</originalsourceid><addsrcrecordid>eNo9kctOwzAQRSMEEs8fYGWJJUrxI46TZVXeKg8hWFsTZ6IYUruK3aLu-Af-kC8hVQuruYtzR5o5SXLK6IgxKi6e21V4weXlSMkRzSWl2U5ywKSkKRd5sbvNqiyL_eQwhHdKBc-VOkiWDxi8s4YY3_fYQbTekWbhzDoEApE01tmIJOJsjj3ERY8EXE1qdMHGFbGOxBbJI8yqxc_X9713kE4hDCVPZr7Gjnza2BIgz75bwYdfks77-XGy10AX8GQ7j5K366vXyW06fbq5m4ynqRFSxrQWCrnMCshAKQ6qZrxmUjAFVBUosrJSkNXNwFaKImR5hYUqc5UDraqMleIoOdvs9SFaHcxwiWmNdw5N1JxRTlkhBup8Q7XQ6XlvZ9CvtAerb8dTbR2fCz18NCuFKpdsoPmGNr0Pocfmv8KoXtvQfza0knpjQ_wCn-mAYQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Mesonic correlation functions at finite temperature and density in the Nambu–Jona-Lasinio model with a Polyakov loop</title><source>American Physical Society Journals</source><creator>Hansen, H. ; Alberico, W. M. ; Beraudo, A. ; Molinari, A. ; Nardi, M. ; Ratti, C.</creator><creatorcontrib>Hansen, H. ; Alberico, W. M. ; Beraudo, A. ; Molinari, A. ; Nardi, M. ; Ratti, C.</creatorcontrib><description>We investigate the properties of scalar and pseudo-scalar mesons at finite temperature and quark chemical potential in the framework of the Nambu-Jona-Lasinio (NJL) model coupled to the Polyakov loop (PNJL model) with the aim of taking into account features of both chiral symmetry breaking and deconfinement. The mesonic correlators are obtained by solving the Schwinger-Dyson equation in the RPA approximation with the Hartree (mean field) quark propagator at finite temperature and density. In the phase of broken chiral symmetry a narrower width for the sigma meson is obtained with respect to the NJL case; on the other hand, the pion still behaves as a Goldstone boson. When chiral symmetry is restored, the pion and sigma spectral functions tend to merge. The Mott temperature for the pion is also computed.</description><identifier>ISSN: 1550-7998</identifier><identifier>ISSN: 2470-0010</identifier><identifier>ISSN: 0556-2821</identifier><identifier>EISSN: 1550-2368</identifier><identifier>EISSN: 2470-0029</identifier><identifier>EISSN: 1089-4918</identifier><identifier>DOI: 10.1103/PhysRevD.75.065004</identifier><language>eng</language><publisher>United States: American Physical Society</publisher><subject>BAG MODEL ; CHIRAL SYMMETRY ; CORRELATION FUNCTIONS ; GOLDSTONE BOSONS ; High Energy Physics - Phenomenology ; MEAN-FIELD THEORY ; Physics ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; PIONS ; POTENTIALS ; PROPAGATOR ; QUANTUM FIELD THEORY ; QUARKS ; RANDOM PHASE APPROXIMATION ; SCALARS ; SPECTRAL FUNCTIONS ; SYMMETRY BREAKING</subject><ispartof>Physical review. D, 2007-03, Vol.75 (6), Article 065004</ispartof><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c355t-d37e2548a4a772a7d12d15317a078e349b7a4df355b70ea46be879676a0bb4193</citedby><cites>FETCH-LOGICAL-c355t-d37e2548a4a772a7d12d15317a078e349b7a4df355b70ea46be879676a0bb4193</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,2874,2875,27923,27924</link.rule.ids><backlink>$$Uhttps://hal.in2p3.fr/in2p3-00449379$$DView record in HAL$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/21020183$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Hansen, H.</creatorcontrib><creatorcontrib>Alberico, W. M.</creatorcontrib><creatorcontrib>Beraudo, A.</creatorcontrib><creatorcontrib>Molinari, A.</creatorcontrib><creatorcontrib>Nardi, M.</creatorcontrib><creatorcontrib>Ratti, C.</creatorcontrib><title>Mesonic correlation functions at finite temperature and density in the Nambu–Jona-Lasinio model with a Polyakov loop</title><title>Physical review. D</title><description>We investigate the properties of scalar and pseudo-scalar mesons at finite temperature and quark chemical potential in the framework of the Nambu-Jona-Lasinio (NJL) model coupled to the Polyakov loop (PNJL model) with the aim of taking into account features of both chiral symmetry breaking and deconfinement. The mesonic correlators are obtained by solving the Schwinger-Dyson equation in the RPA approximation with the Hartree (mean field) quark propagator at finite temperature and density. In the phase of broken chiral symmetry a narrower width for the sigma meson is obtained with respect to the NJL case; on the other hand, the pion still behaves as a Goldstone boson. When chiral symmetry is restored, the pion and sigma spectral functions tend to merge. The Mott temperature for the pion is also computed.</description><subject>BAG MODEL</subject><subject>CHIRAL SYMMETRY</subject><subject>CORRELATION FUNCTIONS</subject><subject>GOLDSTONE BOSONS</subject><subject>High Energy Physics - Phenomenology</subject><subject>MEAN-FIELD THEORY</subject><subject>Physics</subject><subject>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><subject>PIONS</subject><subject>POTENTIALS</subject><subject>PROPAGATOR</subject><subject>QUANTUM FIELD THEORY</subject><subject>QUARKS</subject><subject>RANDOM PHASE APPROXIMATION</subject><subject>SCALARS</subject><subject>SPECTRAL FUNCTIONS</subject><subject>SYMMETRY BREAKING</subject><issn>1550-7998</issn><issn>2470-0010</issn><issn>0556-2821</issn><issn>1550-2368</issn><issn>2470-0029</issn><issn>1089-4918</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNo9kctOwzAQRSMEEs8fYGWJJUrxI46TZVXeKg8hWFsTZ6IYUruK3aLu-Af-kC8hVQuruYtzR5o5SXLK6IgxKi6e21V4weXlSMkRzSWl2U5ywKSkKRd5sbvNqiyL_eQwhHdKBc-VOkiWDxi8s4YY3_fYQbTekWbhzDoEApE01tmIJOJsjj3ERY8EXE1qdMHGFbGOxBbJI8yqxc_X9713kE4hDCVPZr7Gjnza2BIgz75bwYdfks77-XGy10AX8GQ7j5K366vXyW06fbq5m4ynqRFSxrQWCrnMCshAKQ6qZrxmUjAFVBUosrJSkNXNwFaKImR5hYUqc5UDraqMleIoOdvs9SFaHcxwiWmNdw5N1JxRTlkhBup8Q7XQ6XlvZ9CvtAerb8dTbR2fCz18NCuFKpdsoPmGNr0Pocfmv8KoXtvQfza0knpjQ_wCn-mAYQ</recordid><startdate>20070301</startdate><enddate>20070301</enddate><creator>Hansen, H.</creator><creator>Alberico, W. M.</creator><creator>Beraudo, A.</creator><creator>Molinari, A.</creator><creator>Nardi, M.</creator><creator>Ratti, C.</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>OTOTI</scope></search><sort><creationdate>20070301</creationdate><title>Mesonic correlation functions at finite temperature and density in the Nambu–Jona-Lasinio model with a Polyakov loop</title><author>Hansen, H. ; Alberico, W. M. ; Beraudo, A. ; Molinari, A. ; Nardi, M. ; Ratti, C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c355t-d37e2548a4a772a7d12d15317a078e349b7a4df355b70ea46be879676a0bb4193</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>BAG MODEL</topic><topic>CHIRAL SYMMETRY</topic><topic>CORRELATION FUNCTIONS</topic><topic>GOLDSTONE BOSONS</topic><topic>High Energy Physics - Phenomenology</topic><topic>MEAN-FIELD THEORY</topic><topic>Physics</topic><topic>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</topic><topic>PIONS</topic><topic>POTENTIALS</topic><topic>PROPAGATOR</topic><topic>QUANTUM FIELD THEORY</topic><topic>QUARKS</topic><topic>RANDOM PHASE APPROXIMATION</topic><topic>SCALARS</topic><topic>SPECTRAL FUNCTIONS</topic><topic>SYMMETRY BREAKING</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hansen, H.</creatorcontrib><creatorcontrib>Alberico, W. M.</creatorcontrib><creatorcontrib>Beraudo, A.</creatorcontrib><creatorcontrib>Molinari, A.</creatorcontrib><creatorcontrib>Nardi, M.</creatorcontrib><creatorcontrib>Ratti, C.</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>OSTI.GOV</collection><jtitle>Physical review. D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hansen, H.</au><au>Alberico, W. M.</au><au>Beraudo, A.</au><au>Molinari, A.</au><au>Nardi, M.</au><au>Ratti, C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mesonic correlation functions at finite temperature and density in the Nambu–Jona-Lasinio model with a Polyakov loop</atitle><jtitle>Physical review. D</jtitle><date>2007-03-01</date><risdate>2007</risdate><volume>75</volume><issue>6</issue><artnum>065004</artnum><issn>1550-7998</issn><issn>2470-0010</issn><issn>0556-2821</issn><eissn>1550-2368</eissn><eissn>2470-0029</eissn><eissn>1089-4918</eissn><abstract>We investigate the properties of scalar and pseudo-scalar mesons at finite temperature and quark chemical potential in the framework of the Nambu-Jona-Lasinio (NJL) model coupled to the Polyakov loop (PNJL model) with the aim of taking into account features of both chiral symmetry breaking and deconfinement. The mesonic correlators are obtained by solving the Schwinger-Dyson equation in the RPA approximation with the Hartree (mean field) quark propagator at finite temperature and density. In the phase of broken chiral symmetry a narrower width for the sigma meson is obtained with respect to the NJL case; on the other hand, the pion still behaves as a Goldstone boson. When chiral symmetry is restored, the pion and sigma spectral functions tend to merge. The Mott temperature for the pion is also computed.</abstract><cop>United States</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevD.75.065004</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1550-7998 |
| ispartof | Physical review. D, 2007-03, Vol.75 (6), Article 065004 |
| issn | 1550-7998 2470-0010 0556-2821 1550-2368 2470-0029 1089-4918 |
| language | eng |
| recordid | cdi_osti_scitechconnect_21020183 |
| source | American Physical Society Journals |
| subjects | BAG MODEL CHIRAL SYMMETRY CORRELATION FUNCTIONS GOLDSTONE BOSONS High Energy Physics - Phenomenology MEAN-FIELD THEORY Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PIONS POTENTIALS PROPAGATOR QUANTUM FIELD THEORY QUARKS RANDOM PHASE APPROXIMATION SCALARS SPECTRAL FUNCTIONS SYMMETRY BREAKING |
| title | Mesonic correlation functions at finite temperature and density in the Nambu–Jona-Lasinio model with a Polyakov loop |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-11T14%3A17%3A18IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-hal_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Mesonic%20correlation%20functions%20at%20finite%20temperature%20and%20density%20in%20the%20Nambu%E2%80%93Jona-Lasinio%20model%20with%20a%20Polyakov%20loop&rft.jtitle=Physical%20review.%20D&rft.au=Hansen,%20H.&rft.date=2007-03-01&rft.volume=75&rft.issue=6&rft.artnum=065004&rft.issn=1550-7998&rft.eissn=1550-2368&rft_id=info:doi/10.1103/PhysRevD.75.065004&rft_dat=%3Chal_osti_%3Eoai_HAL_in2p3_00449379v1%3C/hal_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |