Real-time propagators at finite temperature and chemical potential

2009/01/08 by S. Mallik, Sourav Sarkar · 4 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #High-Energy Particle Collisions Research #Quantum Mechanics and Non-Hermitian Physics #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-009-0990-6

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

arxiv created 2009/01/08 · openalex publication_date 2009/04/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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 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.

Citations

• Statistical-Mechanical Theory of Irreversible Processes. I. General Theory and Simple Applications to Magnetic and Conduction Problems
• Über Eigenschaften von Ausbreitungsfunktionen und Renormierungskonstanten quantisierter Felder

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