14–19 Jun 2010
Villasimius, Sardinia
Europe/Rome timezone

Low-energy constants from Dirac eigenvalue correlators at NNLO in the epsilon expansion

15 Jun 2010, 09:30
20m
Room6 (Villasimius, Sardinia)

Room6

Villasimius, Sardinia

Tanka Village

Speaker

Christoph Lehner (RIKEN/BNL Research Center, Brookhaven National Laboratory, Upton, NY-11973, USA)

Description

We calculate the next-to-next-to-leading order (NNLO) contributions in the epsilon expansion with a small imaginary chemical potential and discuss their relevance to Dirac eigenvalue correlators. We show how to minimize systematic deviations from random-matrix theory by an optimal choice of lattice geometry in the case of two light quark flavors. Finally, we determine the low-energy constants Sigma and F from configurations of JLQCD with two dynamical overlap fermions.
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Primary author

Christoph Lehner (RIKEN/BNL Research Center, Brookhaven National Laboratory, Upton, NY-11973, USA)

Co-authors

Prof. Shoji Hashimoto (High Energy Accelerator Research Organization (KEK), Tsukuba 305-080, Japan) Prof. Tilo Wettig (Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany)

Presentation materials