QCD phase diagram from chiral symmetry restoration: analytic approach at high and low temperature using the linear sigma model with quarks
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Sociedad Mexicana de Física A.C.
2018
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| _version_ | 1876458620726542336 |
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| author | Alejandro Ayala |
| author_facet | Alejandro Ayala |
| contents | QCD phase diagram from chiral symmetry restoration: analytic approach at high and low temperature using the linear sigma model with quarks Alejandro Ayala S. Hernandez-Ortiz L. A. Hernandez Física, Astronomía y Matemáticas chiral symmetry QCD phase diagram linear sigma model critical end point We use the linear sigma model with quarks to study the QCD phase diagram from the point of view of chiral symmetry restoration. We compute the leading order effective potential for high and low temperatures and finite quark chemical potential, up to the contribution of the ring diagrams to account for the plasma screening effects. We fix the values of the model couplings using physical values for the input parameters such as the vacuum pion and sigma masses, the critical temperature at vanishing quark chemical potential and the conjectured end point value of the baryon chemical potential of the transition line at vanishing temperature. We also make the analysis for the same input parameters but with vanishing pion mass. We find that the critical end point (CEP) is located at low temperatures and high quark chemical potentials (315 < µCEP < 349 MeV, 18 < T CEP < 45 MeV). 2018 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57082913014 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.3 Vol.64 |
| format | Artículo científico |
| id | redalyc_57082913014 |
| institution | Redalyc |
| language | en |
| publishDate | 2018 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | QCD phase diagram from chiral symmetry restoration: analytic approach at high and low temperature using the linear sigma model with quarks Alejandro Ayala Física, Astronomía y Matemáticas chiral symmetry QCD phase diagram linear sigma model critical end point QCD phase diagram from chiral symmetry restoration: analytic approach at high and low temperature using the linear sigma model with quarks Alejandro Ayala S. Hernandez-Ortiz L. A. Hernandez Física, Astronomía y Matemáticas chiral symmetry QCD phase diagram linear sigma model critical end point We use the linear sigma model with quarks to study the QCD phase diagram from the point of view of chiral symmetry restoration. We compute the leading order effective potential for high and low temperatures and finite quark chemical potential, up to the contribution of the ring diagrams to account for the plasma screening effects. We fix the values of the model couplings using physical values for the input parameters such as the vacuum pion and sigma masses, the critical temperature at vanishing quark chemical potential and the conjectured end point value of the baryon chemical potential of the transition line at vanishing temperature. We also make the analysis for the same input parameters but with vanishing pion mass. We find that the critical end point (CEP) is located at low temperatures and high quark chemical potentials (315 < µCEP < 349 MeV, 18 < T CEP < 45 MeV). 2018 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57082913014 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.3 Vol.64 |
| title | QCD phase diagram from chiral symmetry restoration: analytic approach at high and low temperature using the linear sigma model with quarks |
| topic | Física, Astronomía y Matemáticas chiral symmetry QCD phase diagram linear sigma model critical end point |
| url | https://www.redalyc.org/articulo.oa?id=57082913014 |