Finite-temperature quantum field theory in curved spacetime: Quasilocal effective Lagrangians

Details Finite-temperature quantum field theory in curved spacetime: Quasilocal effective Lagrangians Finite-temperature quantum field theory in curved spacetime: Quasilocal effective Lagrangians

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvd..35..510h&link_type=abstract

Physical Review D (Particles and Fields), Volume 35, Issue 2, 15 January 1987, pp.510-527

Physics

Condensed Matter

Statistical Mechanics

29

Theory Of Quantized Fields, Canonical Formalism, Lagrangians, And Variational Principles, Quantum Statistical Mechanics

Scientific paper

We use momentum-space techniques and a quasilocal expansion to derive the imaginary-time thermal Green's functions and the one-loop finite-temperature effective Lagrangians for λφ4 fields in curved spacetimes. These approximations are useful for treating quasiequilibrium conditions associated with gradual changes in the background fields and the background spacetimes. For problems in spacetimes with small curvature, we use a Riemann normal coordinate for the background metric, a derivative expansion for the background field, and a small-proper-time Schwinger-DeWitt expansion to derive the finite-temperature effective Lagrangians. For problems in homogeneous cosmology we consider conformally related fields and the Robertson-Walker universe as background to carry out finite-temperature perturbation calculations. We study a massless conformal λφ4 theory in a Bianchi type-I universe and derive the finite-temperature effective Lagrangian in orders of small anisotropy. The quasilocal method presented here is related to the adiabatic method in finite-temperature quantum field theory presented earlier in similar settings. These results are useful for the study of quantum thermal processes in the early Universe.

Affiliated with

Also associated with

No associations

Rating

Finite-temperature quantum field theory in curved spacetime: Quasilocal effective Lagrangians does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Finite-temperature quantum field theory in curved spacetime: Quasilocal effective Lagrangians, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finite-temperature quantum field theory in curved spacetime: Quasilocal effective Lagrangians will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1624265