Quantum Brownian Representation for the Quantum Field Modes
Author
Source
Advances in High Energy Physics
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-29, 29 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-08-02
Country of Publication
Egypt
No. of Pages
29
Main Subjects
Abstract EN
When analyzing the particle-like excitations in quantum field theory it is natural to regard the field mode corresponding to the particle momentum as an open quantum system, together with the opposite momentum mode.
Provided that the state of the field is stationary, homogeneous, and isotropic, this scalar two-mode system can be equivalently represented in terms of a pair of quantum Brownian oscillators under a Gaussian approximation.
In other words, the two-mode system behaves as if it were interacting linearly with some effective environment.
In this paper we build the details of the effective linear coupling and the effective environment, and argue that this quantum Brownian representation provides a simple, universal, and nonperturbative characterization of any single particle-like excitation.
As immediate applications of the equivalence, we reanalyze the interpretation of the self-energy in terms of decay rates in a general background state and present the master equation for the field mode corresponding to the particle momentum.
American Psychological Association (APA)
Arteaga, Daniel. 2009. Quantum Brownian Representation for the Quantum Field Modes. Advances in High Energy Physics،Vol. 2009, no. 2009, pp.1-29.
https://search.emarefa.net/detail/BIM-459769
Modern Language Association (MLA)
Arteaga, Daniel. Quantum Brownian Representation for the Quantum Field Modes. Advances in High Energy Physics No. 2009 (2009), pp.1-29.
https://search.emarefa.net/detail/BIM-459769
American Medical Association (AMA)
Arteaga, Daniel. Quantum Brownian Representation for the Quantum Field Modes. Advances in High Energy Physics. 2009. Vol. 2009, no. 2009, pp.1-29.
https://search.emarefa.net/detail/BIM-459769
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-459769