Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Acta Physica Sinica

THE INTERACTION PICTURE IN THE CLOSED TIME PATH GREEN'S FUNCTIONS

XU HONG-HUA, 上海市普陀区业余大学

Published Jan 1, 1985• 0 citations
Publisher

Abstract

It is clarified that the interaction picture introduced in CTPGF ought to be the incoming one and the perturbation expansion of CTPGF to be developed also in this sense.
DOI
10.7498/aps.34.1359

Related papers

Comment on "Perturbation expansion of closed-time-path Green's functions"

Stéphane Vago, T. Toutain

The "incoming" interaction picture found by Xu and Tsai [Phys. Rev. A 41, 53 (1990)], used to develop a convenient formulation of the closed-time-path approach to Green's function theory, is shown to be a particular case of a more general set of solutions.

Physical Review A•Oct 1, 1995•2 citations

Reply to "Comment on `Perturbation expansion of closed-time-path Green's functions' "

Hong-Hua Xu

Controversial points in this Comment concerning the general picture transformations which may give rise to a variety of interaction pictures are analyzed.Received 26 April 1995DOI:https://doi.org/10.1103/PhysRevA.52.3379©1995 American Physical Society

Physical Review A•Oct 1, 1995•0 citations

TIME DEPENDENCE OF INTERACTION PICTURE TRANSITION AMPLITUDES TO ALL ORDERS OF PERTURBATION THEORY

Steven Kenneth Kauffmann

•Jan 1, 1978•0 citations

THE CLOSED TIME PATH GREEN'S FUNCTIONS AND THE THEORY OF NONLINEAR RESPONSE (Ⅱ)

WANG WAI-TONG, LIN ZHONG-HENG, Zhao-Bin Su +2 more

By using the results of our previous paper, the linear fluctuation-dissipation theorem are formally generalized to nonlinear case described by n-point correlation and response functions.

Acta Physica Sinica•Jan 1, 1982•3 citations

THE FEYNMAN PATH INTEGRAL REPRESENTATION OF GREEN FUNCTIONS OF THE POSITION AND THE MOMENTUM OPERATORS (Spectral and Scattering Theory and Related Topics)

Wataru Ichinose

数理解析研究所講究録•May 1, 2001•0 citations

On the Perturbation Expansion of Closed Time Path Green's Functions

Hong-Hua Xu, Chien-hua Tsai

The incoming interaction picture is introduced in accordance with the adiabatic hypothesis. A generalized Wick's theorem and, accordingly, a real time formalism of perturbation theory at finite temperatures are constructed for the closed Time Path Green's Functions (CTPGF). This new approach is illustrated in terms of the simple case of an electron-phonon system.

Communications in Theoretical Physics•Jan 1, 1990•0 citations