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Real-time propagators at finite temperature and chemical potential

The European Physical Journal C volume 61, pages 489–494 (2009)Cite this article

Abstract

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 property allows for a simple evaluation of loop integrals in the energy variables over propagators in this form, even in the presence of chemical potentials, which is not possible for their conventional form.

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Authors and Affiliations

  1. Theory Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India

    S. Mallik

  2. Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata, 700064, India

    Sourav Sarkar

Authors
  1. S. Mallik
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  2. Sourav Sarkar
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Correspondence to S. Mallik.

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Mallik, S., Sarkar, S. Real-time propagators at finite temperature and chemical potential. Eur. Phys. J. C 61, 489–494 (2009). https://doi.org/10.1140/epjc/s10052-009-0990-6

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  • DOI: https://doi.org/10.1140/epjc/s10052-009-0990-6

PACS

  • 11.10.Wx