Lehner, Christoph and Hashimoto, Shoji and Wettig, Tilo (2010) The epsilon expansion at next-to-next-to-leading order with small imaginary chemical potential. JOURNAL OF HIGH ENERGY PHYSICS (6): 028. ISSN 1029-8479,
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We discuss chiral perturbation theory for two and three quark flavors in the epsilon expansion at next-to-next-to-leading order (NNLO) including a small imaginary chemical potential We calculate finite-volume corrections to the low-energy constants Sigma and F and determine the non-universal modifications of the theory, i.e., modifications that cannot be mapped to random matrix theory (RMT) In the special case of two quark flavors in an asymmetric box we discuss how to minimize the finite-volume corrections and non-universal modifications by an optimal choice of the lattice geometry. Furthermore we provide a detailed calculation of a special version of the massless sunset diagram at finite volume.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHIRAL PERTURBATION-THEORY; ONE-LOOP; SYMMETRY; QCD; Lattice QCD; Chiral Lagrangians |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Tilo Wettig |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Jul 2020 08:51 |
| Last Modified: | 29 Jul 2020 08:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24636 |
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