Brandt, Bastian B. and Francis, Anthony and Meyer, Harvey B. and Wittig, Hartmut (2013) Thermal correlators in the rho channel of two-flavor QCD. JOURNAL OF HIGH ENERGY PHYSICS (3): 100. ISSN 1029-8479,
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We present a lattice QCD calculation with two dynamical flavors of the isovector vector correlator in the high-temperature phase. We analyze the correlator in terms of the associated spectral function, for which we review the theoretical expectations. In our main analysis, we perform a fit for the difference of the thermal and vacuum spectral functions, and we use an exact sum rule that constrains this difference. We also perform a direct fit for the thermal spectral function, and obtain good agreement between the two analyses for frequencies below the two-pion threshold. Under the assumption that the spectral function is smooth in that region, we give an estimate of the electrical conductivity.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUARK-GLUON PLASMA; LATTICE QCD; ELECTRICAL-CONDUCTIVITY; CHIRAL-SYMMETRY; IMPROVEMENT; DIFFUSION; EXPANSION; DILEPTONS; PHOTON; MASS; Quark-Gluon Plasma; Lattice QCD; Thermal Field Theory; Sum Rules |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Apr 2020 13:09 |
| Last Modified: | 23 Apr 2020 13:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17008 |
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