scholarly journals Axion decay in a constant electromagnetic background field and at finite temperature using world-line methods

1999 ◽  
Vol 7 (1) ◽  
pp. 149-158 ◽  
Author(s):  
M. Haack ◽  
M.G. Schmidt
Keyword(s):  
Finite Temperature ◽  
World Line ◽  
Background Field ◽  
Axion Decay

Gauge theories at finite temperature and the background field method

1990 ◽  
Vol 242 (3-4) ◽  
pp. 412-414 ◽  
Author(s):  
J. Antikainen ◽  
M. Chaichian ◽  
N.R. Pantoja ◽  
J.J. Salazar
Keyword(s):  
Finite Temperature ◽  
Gauge Theories ◽  
Background Field ◽  
Field Method ◽  
Background Field Method

scholarly journals Free Energy Density for Gauge Background Fields at Finite Temperature

2011 ◽  
Vol 21 (3) ◽  
pp. 277
Author(s):  
Phan Hong Lien
Keyword(s):  
Free Energy ◽  
Gauge Theory ◽  
Energy Density ◽  
Finite Temperature ◽  
Chemical Potential ◽  
Free Energy Density ◽  
Background Field ◽  
Field Method ◽  
Abelian Gauge ◽  
Background Fields

The effective action and background field method have been applied to investigate free energy density for non-Abelian gauge theory at finite temperature, in which quantum corrections are included and certain symmetries of generating functional are restored. Renormalization is also considered for the gauge field. We give result for the one loop free energy density of gauge theory at high temperature and non-zero chemical potential, correcting a result previously at zero temperature and density. Some results are extended up to two loops

Matter Determinants in Background Fields Using Random Walk World Line Loops on the Lattice

2003 ◽  
Vol 18 (22) ◽  
pp. 1499-1515 ◽  
Author(s):  
Michael G. Schmidt ◽  
Ion-Olimpiu Stamatescu
Keyword(s):  
Random Walk ◽  
World Line ◽  
Background Field ◽  
Analytic Solutions ◽  
Special Cases ◽  
Background Fields ◽  
The Continuum

The continuum World Line Formalism permits a transparent discussion of bosonic and fermionic determinants in some background field. For general, nontrivial backgrounds numerical evaluations must be envisaged. In this work we implement this formalism on the lattice by using statistically generated random walk world line loops. We illustrate the method by applying it to special cases and discuss the results in comparison with known analytic solutions in continuum.

scholarly journals Background field method at finite temperature and density

2006 ◽  
Vol 635 (4) ◽  
pp. 213-217 ◽  
Author(s):  
M. Loewe ◽  
S. Mendizabal ◽  
J.C. Rojas
Keyword(s):  
Finite Temperature ◽  
Background Field ◽  
Field Method ◽  
Background Field Method

Evolution of Coupling Constant in Hot QCD

1997 ◽  
Vol 06 (01) ◽  
pp. 45-64
Author(s):  
M. Chaichian ◽  
M. Hayashi
Keyword(s):  
Finite Temperature ◽  
Lorentz Invariance ◽  
Background Field ◽  
Field Method ◽  
Renormalization Group Equation ◽  
Group Equation ◽  
Coupling Constant ◽  
Time Formalism ◽  
Background Field Method ◽  
The One

The evolution of QCD coupling constant at finite temperature is considered by making use of the finite temperature renormalization group equation up to the one-loop order in the background field method with the Feynman gauge and the imaginary time formalism. The results are compared with the ones obtained in the literature. We point out, in particular, the origin of the discrepancies between different calculations, such as the choice of gauge, the breakdown of Lorentz invariance, imaginary versus real time formalism and the applicability of the Ward identities at finite temperature.

scholarly journals FINITE TEMPERATURE INDUCED FERMION NUMBER

2002 ◽  
Vol 17 (06n07) ◽  
pp. 890-897
Author(s):  
GERALD V. DUNNE
Keyword(s):  
Finite Temperature ◽  
Asymptotic Properties ◽  
Background Field ◽  
Zero Temperature ◽  
Fermion Number

The induced fermion number at zero temperature is topological (in the sense that it is only sensitive to global asymptotic properties of the background field), and is a sharp observable (in the sense that it has vanishing rms fluctuations). At finite temperature, it is shown to be generically nontopological, and it is not a sharp observable.

Sign in / Sign up

Export Citation Format

Share Document