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QCD phase diagram in a magnetized medium from the chiral symmetry perspective: the linear sigma model with quarks and the Nambu–Jona-Lasinio model effective descriptions
We review the main features of the QCD phase diagram description, at finite temperature, baryon density and in the presence of a magnetic field, from the point of view of effective models, whose main ingredient is chiral symmetry. We concentrate our attention on two of these models: The linear sigma...
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Published in: | The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2021-07, Vol.57 (7), Article 234 |
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description | We review the main features of the QCD phase diagram description, at finite temperature, baryon density and in the presence of a magnetic field, from the point of view of effective models, whose main ingredient is chiral symmetry. We concentrate our attention on two of these models: The linear sigma model with quarks and the Nambu–Jona-Lasinio model. We show that a main ingredient to understand the characteristics of the phase transitions is the inclusion of plasma screening effects that capture the physics of collective, long-wave modes, and thus describe a prime property of plasmas near transition lines, namely, long distance correlations. Inclusion of plasma screening makes possible to understand the inverse magnetic catalysis phenomenon even without the need to consider magnetic field-dependent coupling constants. Screening is also responsible for the emergence of a critical end point in the phase diagram even for small magnetic field strengths. Although versatile, the NJL model is also a more limited approach since, being a non-renormalizable model, a clear separation between pure vacuum and medium effects is not always possible. The model cannot describe inverse magnetic catalysis unless a magnetic field dependent coupling is included. The location of the critical end point strongly depends on the choice of the type of interaction and on the magnetic field dependence of the corresponding coupling. Overall, both models provide sensible tools to explore the properties of magnetized, strongly interacting matter. However, a cross talk among them as well as a consistent physical approach to determine the model parameters is much needed. |
doi_str_mv | 10.1140/epja/s10050-021-00534-4 |
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The model cannot describe inverse magnetic catalysis unless a magnetic field dependent coupling is included. The location of the critical end point strongly depends on the choice of the type of interaction and on the magnetic field dependence of the corresponding coupling. Overall, both models provide sensible tools to explore the properties of magnetized, strongly interacting matter. 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A, Hadrons and nuclei</title><addtitle>Eur. Phys. J. A</addtitle><description>We review the main features of the QCD phase diagram description, at finite temperature, baryon density and in the presence of a magnetic field, from the point of view of effective models, whose main ingredient is chiral symmetry. We concentrate our attention on two of these models: The linear sigma model with quarks and the Nambu–Jona-Lasinio model. We show that a main ingredient to understand the characteristics of the phase transitions is the inclusion of plasma screening effects that capture the physics of collective, long-wave modes, and thus describe a prime property of plasmas near transition lines, namely, long distance correlations. Inclusion of plasma screening makes possible to understand the inverse magnetic catalysis phenomenon even without the need to consider magnetic field-dependent coupling constants. Screening is also responsible for the emergence of a critical end point in the phase diagram even for small magnetic field strengths. Although versatile, the NJL model is also a more limited approach since, being a non-renormalizable model, a clear separation between pure vacuum and medium effects is not always possible. The model cannot describe inverse magnetic catalysis unless a magnetic field dependent coupling is included. The location of the critical end point strongly depends on the choice of the type of interaction and on the magnetic field dependence of the corresponding coupling. Overall, both models provide sensible tools to explore the properties of magnetized, strongly interacting matter. However, a cross talk among them as well as a consistent physical approach to determine the model parameters is much needed.</description><subject>Catalysis</subject><subject>Coupling</subject><subject>Crosstalk</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>Magnetic fields</subject><subject>Magnetic properties</subject><subject>Nuclear Fusion</subject><subject>Nuclear Physics</subject><subject>Particle and Nuclear Physics</subject><subject>Phase diagrams</subject><subject>Phase transitions</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Plasmas (physics)</subject><subject>Quantum chromodynamics</subject><subject>Quarks</subject><subject>Review</subject><subject>Screening</subject><subject>Symmetry</subject><subject>The QCD Phase Diagram in Strong Magnetic Fields</subject><issn>1434-6001</issn><issn>1434-601X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkcFO3DAURSNEJWDgG7DUdRjbcZKmu2oKlGpUVKlI7KyX-Dnj6dgJdgKarvoPfAZ_1S-pmSBYsvJdnHuf5JMkp4yeMSboHPs1zAOjNKcp5SyNIROp2EsOmYihoOx2_zVTdpAchbCmlApeFYfJ08_FV9KvICBRBloPlhhHgFhoHQ7mDypiUZnREu07S4YVkmZlPGxI2FqLg9-SHn3osRnMPX7eARvjEDwJprVxqFO4IQ9mWJG7EfzvQMCpHfYDbD3--_v4vXOQLiEYZ7oXHLWeBonC0HjTD6Zz4Tj5oGET8OTlnSU3F-e_Ft_S5fXl1eLLMm2yTAxprUHpOuOgONSibHINqHiuqpi1KLOMqaJiFTYoQFe05tgopXlES1oIUWSz5OO02_vubsQwyHU3ehdPSp7nPP66yMtIlRPV-C4Ej1r23ljwW8mofDYjn83IyYyMZuTOjBSx-WlqhthwLfq3_feq_wFSnJp5</recordid><startdate>20210701</startdate><enddate>20210701</enddate><creator>Ayala, Alejandro</creator><creator>Hernández, Luis A.</creator><creator>Loewe, Marcelo</creator><creator>Villavicencio, Cristian</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20210701</creationdate><title>QCD phase diagram in a magnetized medium from the chiral symmetry perspective: the linear sigma model with quarks and the Nambu–Jona-Lasinio model effective descriptions</title><author>Ayala, Alejandro ; Hernández, Luis A. ; Loewe, Marcelo ; Villavicencio, Cristian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c334t-bfadfb32ad2ab47c5faed25d947cf47331d6919ece4af90b2ecddf2b477064463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Catalysis</topic><topic>Coupling</topic><topic>Crosstalk</topic><topic>Hadrons</topic><topic>Heavy Ions</topic><topic>Magnetic fields</topic><topic>Magnetic properties</topic><topic>Nuclear Fusion</topic><topic>Nuclear Physics</topic><topic>Particle and Nuclear Physics</topic><topic>Phase diagrams</topic><topic>Phase transitions</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Plasmas (physics)</topic><topic>Quantum chromodynamics</topic><topic>Quarks</topic><topic>Review</topic><topic>Screening</topic><topic>Symmetry</topic><topic>The QCD Phase Diagram in Strong Magnetic Fields</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ayala, Alejandro</creatorcontrib><creatorcontrib>Hernández, Luis A.</creatorcontrib><creatorcontrib>Loewe, Marcelo</creatorcontrib><creatorcontrib>Villavicencio, Cristian</creatorcontrib><collection>CrossRef</collection><jtitle>The European physical journal. A, Hadrons and nuclei</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ayala, Alejandro</au><au>Hernández, Luis A.</au><au>Loewe, Marcelo</au><au>Villavicencio, Cristian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>QCD phase diagram in a magnetized medium from the chiral symmetry perspective: the linear sigma model with quarks and the Nambu–Jona-Lasinio model effective descriptions</atitle><jtitle>The European physical journal. A, Hadrons and nuclei</jtitle><stitle>Eur. Phys. J. A</stitle><date>2021-07-01</date><risdate>2021</risdate><volume>57</volume><issue>7</issue><artnum>234</artnum><issn>1434-6001</issn><eissn>1434-601X</eissn><abstract>We review the main features of the QCD phase diagram description, at finite temperature, baryon density and in the presence of a magnetic field, from the point of view of effective models, whose main ingredient is chiral symmetry. 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The model cannot describe inverse magnetic catalysis unless a magnetic field dependent coupling is included. The location of the critical end point strongly depends on the choice of the type of interaction and on the magnetic field dependence of the corresponding coupling. Overall, both models provide sensible tools to explore the properties of magnetized, strongly interacting matter. However, a cross talk among them as well as a consistent physical approach to determine the model parameters is much needed.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1140/epja/s10050-021-00534-4</doi></addata></record> |
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subjects | Catalysis Coupling Crosstalk Hadrons Heavy Ions Magnetic fields Magnetic properties Nuclear Fusion Nuclear Physics Particle and Nuclear Physics Phase diagrams Phase transitions Physics Physics and Astronomy Plasmas (physics) Quantum chromodynamics Quarks Review Screening Symmetry The QCD Phase Diagram in Strong Magnetic Fields |
title | QCD phase diagram in a magnetized medium from the chiral symmetry perspective: the linear sigma model with quarks and the Nambu–Jona-Lasinio model effective descriptions |
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