Please use this identifier to cite or link to this item:
https://repositorio.ufba.br/handle/ri/6292
metadata.dc.type: | Artigo de Periódico |
Title: | Thermoalgebras and path integral |
Other Titles: | Annals of Physics |
Authors: | Khanna, Faqir C. Malbouisson, A. P. C. Malbouisson, J. M. C. Santana, Ademir Eugênio de |
metadata.dc.creator: | Khanna, Faqir C. Malbouisson, A. P. C. Malbouisson, J. M. C. Santana, Ademir Eugênio de |
Abstract: | Using a representation for Lie groups closely associated with thermal problems, we derive the algebraic rules of the real-time formalism for thermal quantum field theories, the so-called thermo-field dynamics (TFD), including the tilde conjugation rules for interacting fields. These thermo-group representations provide a unified view of different approaches for finite-temperature quantum fields in terms of a symmetry group. On these grounds, a path integral formalism is constructed, using Bogoliubov transformations, for bosons, fermions and non-abelian gauge fields. The generalization of the results for quantum fields in (S1)d×RD-d topology is addressed. |
Keywords: | Thermo field dynamics Thermo algebras Path integral |
Publisher: | Elsevier |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/6292 |
Issue Date: | Sep-2009 |
Appears in Collections: | Artigo Publicado em Periódico (FIS) |
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(100)1-s2.0-S000349160900102X-main.pdf Restricted Access | 315,08 kB | Adobe PDF | View/Open Request a copy |
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