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Author Brandt, Fernando T. ♦ Das, Ashok ♦ Espinosa, Olivier ♦ Frenkel, Josif ♦ Perez, Silvana
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2005-08-09
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword High Energy Physics - Theory ♦ High Energy Physics - Phenomenology ♦ physics:hep-ph ♦ physics:hep-th
Abstract Using the mixed space representation (t,p) in the context of scalar field theories, we prove in a simple manner that the Feynman graphs at finite temperature are related to the corresponding zero temperature diagrams through a simple thermal operator, both in the imaginary time as well as in the real time formalisms. This result is generalized to the case when there is a nontrivial chemical potential present. Several interesting properties of the thermal operator are also discussed.
Description Reference: Phys.Rev.D72:085006,2005
Educational Use Research
Learning Resource Type Article
Page Count 20


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