Constraining the QCD phase diagram
Lattice QCD and functional methods are making significant progress in constraining the QCD phase diagram. As an important milestone, the chiral phase transition with massless u, d-quarks at zero density is now understood to be of second order for all strange quark masses, and a smooth crossover as s...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2023/16/epjconf_eunpc2023_05002.pdf |
| _version_ | 1797343954758270976 |
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| author | Philipsen Owe |
| author_facet | Philipsen Owe |
| author_sort | Philipsen Owe |
| collection | DOAJ |
| description | Lattice QCD and functional methods are making significant progress in constraining the QCD phase diagram. As an important milestone, the chiral phase transition with massless u, d-quarks at zero density is now understood to be of second order for all strange quark masses, and a smooth crossover as soon as mu,d, ≠ 0. Together with information on fluctuations and refined reweighted simulations, this bounds a possible critical point to be at µB/T ≲3. On the other hand, an approximately chiral-spin symmetric temperature window has been discovered above the chiral crossover, Tch<T ≳3Tch, with distinct correlator multiplet patterns and a pion spectral function suggesting resonance-like degrees of freedom, which dissolve graduallly with temperature. |
| first_indexed | 2024-03-08T10:55:18Z |
| format | Article |
| id | doaj.art-6be064cecf214d75af36cb75d4d0809a |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-03-08T10:55:18Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-6be064cecf214d75af36cb75d4d0809a2024-01-26T16:38:38ZengEDP SciencesEPJ Web of Conferences2100-014X2023-01-012900500210.1051/epjconf/202329005002epjconf_eunpc2023_05002Constraining the QCD phase diagramPhilipsen Owe0Institute for Theoretical Physics, Goethe University FrankfurtLattice QCD and functional methods are making significant progress in constraining the QCD phase diagram. As an important milestone, the chiral phase transition with massless u, d-quarks at zero density is now understood to be of second order for all strange quark masses, and a smooth crossover as soon as mu,d, ≠ 0. Together with information on fluctuations and refined reweighted simulations, this bounds a possible critical point to be at µB/T ≲3. On the other hand, an approximately chiral-spin symmetric temperature window has been discovered above the chiral crossover, Tch<T ≳3Tch, with distinct correlator multiplet patterns and a pion spectral function suggesting resonance-like degrees of freedom, which dissolve graduallly with temperature.https://www.epj-conferences.org/articles/epjconf/pdf/2023/16/epjconf_eunpc2023_05002.pdf |
| spellingShingle | Philipsen Owe Constraining the QCD phase diagram EPJ Web of Conferences |
| title | Constraining the QCD phase diagram |
| title_full | Constraining the QCD phase diagram |
| title_fullStr | Constraining the QCD phase diagram |
| title_full_unstemmed | Constraining the QCD phase diagram |
| title_short | Constraining the QCD phase diagram |
| title_sort | constraining the qcd phase diagram |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2023/16/epjconf_eunpc2023_05002.pdf |
| work_keys_str_mv | AT philipsenowe constrainingtheqcdphasediagram |