Inclusion of Landau damping in a time-dependent effective theory for a weak-coupling superconductor at finite temperature

1997 ◽  
Vol 56 (13) ◽  
pp. 8303-8312 ◽  
Author(s):  
I. J. R. Aitchison ◽  
D. J. Lee
Keyword(s):  
Finite Temperature ◽  
Weak Coupling ◽  
Time Dependent ◽  
Landau Damping ◽  
Effective Theory

scholarly journals Finite-temperature time-dependent effective theory for the Goldstone field in a BCS-type superfluid

2000 ◽  
Vol 62 (10) ◽  
pp. 6638-6648 ◽  
Author(s):  
Ian Aitchison ◽  
Georgios Metikas ◽  
Dominic Lee
Keyword(s):  
Finite Temperature ◽  
Time Dependent ◽  
Effective Theory ◽  
Temperature Time

Kinetic equations for plasmas subjected to a strong time-dependent extenal field. Part 2. The weak-interaction approximation

1974 ◽  
Vol 11 (3) ◽  
pp. 377-387 ◽  
Author(s):  
R. Balescu ◽  
J. H. Misguich
Keyword(s):  
Kinetic Equation ◽  
General Theory ◽  
Weak Interaction ◽  
Weak Coupling ◽  
Kinetic Equations ◽  
Time Dependent ◽  
External Fields ◽  
Interaction Approximation

The general theory developed in part 1 is illustrated for a plasma described by the weak-coupling (Landau) approximation. The kinetic equation, valid for arbitrarily strong external fields, is written out explicitly.

scholarly journals The pion quasiparticle in the low-temperature phase of QCD

2018 ◽  
Vol 175 ◽  
pp. 07045
Author(s):  
Bastian B. Brandt ◽  
Anthony Francis ◽  
Harvey B. Meyer ◽  
Daniel Robaina ◽  
Kai Zapp
Keyword(s):  
Low Temperature ◽  
Finite Temperature ◽  
Quark Mass ◽  
Pion Mass ◽  
Effective Theory ◽  
Temperature Phase ◽  
Zero Temperature ◽  
Low Temperature Phase

We extend our previous studies [PhysRevD.90.054509, PhysRevD.92.094510] of the pion quasiparticle in the low-temperature phase of two-flavor QCD with support from chiral effective theory. This includes the analysis performed on a finite temperature ensemble of size 20 × 643 at T ≈ 151MeV and a lighter zero-temperature pion mass mπ ≈ 185 MeV. Furthermore, we investigate the Gell-Mann–Oakes-Renner relation at finite temperature and the Dey-Eletsky-Ioffe mixing theorem at finite quark mass.

scholarly journals Finite-temperature time-dependent variation with multiple Davydov states

2017 ◽  
Vol 146 (12) ◽  
pp. 124127 ◽  
Author(s):  
Lu Wang ◽  
Yuta Fujihashi ◽  
Lipeng Chen ◽  
Yang Zhao
Keyword(s):  
Finite Temperature ◽  
Time Dependent ◽  
Temperature Time

Reorganizing Finite Temperature Field Theory: Part I.: Scalar Field Theory

2001 ◽  
Vol 16 (supp01c) ◽  
pp. 1277-1280 ◽  
Author(s):  
Michael Strickland
Keyword(s):  
Field Theory ◽  
Perturbation Theory ◽  
Temperature Field ◽  
Finite Temperature ◽  
Weak Coupling ◽  
Weak Coupling Limit ◽  
Finite Temperature Field Theory ◽  
Expansion Point ◽  
Perturbative Limit ◽  
Standard Perturbation Theory

I present a method for self-consistently including the effects of screening in finite-temperature field theory calculations. The method reproduces the perturbative limit in the weak-coupling limit and for intermediate couplings this method has much better convergence than standard perturbation theory. The method relies on a reorganization of perturbation theory accomplished by shifting the expansion point used to calculate quantum loop corrections. I will present results from a three-loop calculation within this formalism for scalar λϕ4.

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