Bloch, Jacques and Wettig, Tilo (2006) Overlap Dirac operator at nonzero chemical potential and random matrix theory. PHYSICAL REVIEW LETTERS, 97 (1): 012003. ISSN 0031-9007,
Full text not available from this repository.Abstract
We show how to introduce a quark chemical potential in the overlap Dirac operator. The resulting operator satisfies a Ginsparg-Wilson relation and has exact zero modes. It is no longer gamma(5) Hermitian, but its nonreal eigenvalues still occur in pairs. We compute the spectral density of the operator on the lattice and show that, for small eigenvalues, the data agree with analytical predictions of non-Hermitian chiral random matrix theory for both trivial and nontrivial topology. We also explain an observed change in the number of zero modes as a function of chemical potential.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHIRAL-SYMMETRY; LATTICE QCD; TOPOLOGY; SPECTRUM; FERMIONS; EQUATION; LIMIT; MODEL; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Tilo Wettig |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Feb 2021 07:11 |
| Last Modified: | 10 Feb 2021 07:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/34307 |
Actions (login required)
 |
View Item |
