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Abstract:

It is well known that some quantum and statistical fluctuations of a quantum field may be recovered by adding suitable stochastic sources to the mean field equations derived from the Schwinger-Keldysh (closed-time path) effective action. In this paper we show that this method can be extended to higher correlations and higher (n-particle irreducible) effective actions. As an example, we investigate third- and fourth-order correlations by adding stochastic sources to the Schwinger-Dyson equations derived from the 2-particle irreducible effective action. This method is a simple way to investigate the nonlinear dynamics of quantum fluctuations. © 2009 IOP Publishing Ltd.

Registro:

Documento: Artículo
Título:Fourth-order full quantum correlations from a Langevin-Schwinger-Dyson equation
Autor:Calzetta, E.
Filiación:CONICET and Departamento de Fisica, FCEN Universidad de Buenos Aires-Ciudad Universitaria, 1428 Buenos Aires, Argentina
Año:2009
Volumen:42
Número:26
DOI: http://dx.doi.org/10.1088/1751-8113/42/26/265401
Título revista:Journal of Physics A: Mathematical and Theoretical
Título revista abreviado:J. Phys. Math. Theor.
ISSN:17518113
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17518113_v42_n26_p_Calzetta

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Citas:

---------- APA ----------
(2009) . Fourth-order full quantum correlations from a Langevin-Schwinger-Dyson equation. Journal of Physics A: Mathematical and Theoretical, 42(26).
http://dx.doi.org/10.1088/1751-8113/42/26/265401
---------- CHICAGO ----------
Calzetta, E. "Fourth-order full quantum correlations from a Langevin-Schwinger-Dyson equation" . Journal of Physics A: Mathematical and Theoretical 42, no. 26 (2009).
http://dx.doi.org/10.1088/1751-8113/42/26/265401
---------- MLA ----------
Calzetta, E. "Fourth-order full quantum correlations from a Langevin-Schwinger-Dyson equation" . Journal of Physics A: Mathematical and Theoretical, vol. 42, no. 26, 2009.
http://dx.doi.org/10.1088/1751-8113/42/26/265401
---------- VANCOUVER ----------
Calzetta, E. Fourth-order full quantum correlations from a Langevin-Schwinger-Dyson equation. J. Phys. Math. Theor. 2009;42(26).
http://dx.doi.org/10.1088/1751-8113/42/26/265401