Effective potential for quantum correlation functions

A. Cuccoli, V. Tognetti, and R. Vaia
Phys. Rev. A 44, 2734 – Published 1 August 1991
PDFExport Citation

Abstract

A method for calculating quantum averages and static correlation functions of configurational observables is introduced, by extending a variational method, which permits the reduction of the problem to the computation of classical-like averages. This approach opens the possibility of obtaining novel results in many fields, and strongly shortens the computer time needed for numerical calculations. As an example, the well-known sine-Gordon model is considered, and its relevant quantum correlation functions are calculated on the whole temperature range.

  • Received 21 December 1990

DOI:https://doi.org/10.1103/PhysRevA.44.2734

©1991 American Physical Society

Authors & Affiliations

A. Cuccoli and V. Tognetti

  • Dipartimento di Fisica dell’Università di Firenze, 50125 Firenze, Italy

R. Vaia

  • Istituto di Elettronica Quantistica del Consiglio Nazionale delle Ricerche, 50127 Firenze, Italy

References (Subscription Required)

Click to Expand
Issue

Vol. 44, Iss. 4 — August 1991

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×