تقرير
Phase structure of three and four flavor QCD
| العنوان: | Phase structure of three and four flavor QCD |
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| المؤلفون: | Fischer, Christian S., Luecker, Jan, Welzbacher, Christian A. |
| المصدر: | Phys. Rev. D 90, 034022 (2014) |
| سنة النشر: | 2014 |
| المجموعة: | High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Lattice, Nuclear Theory |
| الوصف: | We investigate the phase structure of QCD at finite temperature and light-quark chemical potential. We improve upon earlier results for N_f=2+1 dynamical quark flavors and investigate the effects of charm quarks in an extension to N_f=2+1+1. We determine the quark condensate and the Polyakov loop potential using solutions of a coupled set of (truncated) Dyson-Schwinger equations for the quark and gluon propagators of Landau gauge QCD. At zero chemical potential we find excellent agreement with results from lattice-QCD. With input fixed from physical observables we find only a very small influence of the charm quark on the resulting phase diagram at finite chemical potential. We discuss the location of the emerging critical end-point and compare with expectations from lattice gauge theory. Comment: 10 pages, 9 figures, v2: typos corrected, minor changes, version accepted by PRD |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.90.034022 |
| URL الوصول: | http://arxiv.org/abs/1405.4762 |
| رقم الأكسشن: | edsarx.1405.4762 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.90.034022 |
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