https://doi.org/10.1140/epjp/i2019-12677-y
Regular Article
Photon dispersion relations in A0-background
1
Universität Leipzig, Institute for Theoretical Physics, Leipzig, Germany
2
Oles Honchar Dnipro National University, Dnipro, Ukraine
* e-mail: bordag@uni-leipzig.de
Received:
24
September
2018
Accepted:
1
April
2019
Published online:
26
June
2019
We calculate the photon dispersion relations generated by the quark loop in a quark-gluon plasma with the color A0-background condensate 
. It is found that both transversal and longitudinal modes are exited. They have a gap at low momenta and are stable in the high-temperature approximation. The background fields act as imaginary chemical potentials and decrease the photon frequencies compared to the case of zero background. This has phenomenological consequences, in particular, for direct photons radiated from plasma. Comparisons with the QED plasma with a chemical potential are discussed.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
