1. Lee-Yang zeros in lattice QCD for searching phase transition points
- Author
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Wakayama, M., Bornyakov, V. G., Boyda, D. L., Goy, V. A., Iida, H., Molochkov, A. V., Nakamura, A., and Zakharov, V. I.
- Subjects
High Energy Physics - Lattice - Abstract
We report Lee-Yang zeros behavior at finite temperature and density. The quark number densities,
, are calculated at the pure imaginary chemical potential, where no sign problem occurs. Then, the canonical partition functions, Z_C(n,T,V), up to some maximal values of n are estimated through fitting theoretically motivated functions to , which are used to compute the Lee-Yang zeros. We study the temperature dependence of the distributions of the Lee-Yang zeros around the pseudo-critical temperature region T/T_c = 0.84 - 1.35. In the distributions of the Lee-Yang zeros, we observe the Roberge-Weiss phase transition at T/T_c >= 1.20. We discuss the dependence of the behaviors of Lee-Yang zeros on the maximal value of n, so that we can estimate a reliable infinite volume limit., Comment: 8 pages, 8 figures and 2 tables - Published
- 2018
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