Real-time propagators at finite temperature and chemical potential

Details Real-time propagators at finite temperature and chemical potential Real-time propagators at finite temperature and chemical potential

2009-01-08

arxiv.org/abs/0901.1045v1

Eur.Phys.J.C61:489-494,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1140/epjc/s10052-009-0990-6

We derive a form of spectral representations for all bosonic and fermionic propagators in the real-time formulation of field theory at finite temperature and chemical potential. Besides being simple and symmetrical between the bosonic and the fermionic types, these representations depend explicitly on analytic functions only. This last property allows a simple evaluation of loop integrals in the energy variables over propagators in this form, even in presence of chemical potentials, which is not possible over their conventional form.

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