scholarly journals Effective action for hard thermal loops in gravitational fields

2016 ◽  
Vol 756 ◽  
pp. 205-207
Author(s):  
R.R. Francisco ◽  
J. Frenkel ◽  
J.C. Taylor
Keyword(s):  
Effective Action ◽  
Gravitational Fields ◽  
Hard Thermal Loops

Effective actions for Braaten–Pisarski resummation

1993 ◽  
Vol 71 (5-6) ◽  
pp. 219-226 ◽  
Author(s):  
F. T. Brandt ◽  
J. Frenkel ◽  
J. C. Taylor ◽  
S. M. H. Wong
Keyword(s):  
Effective Action ◽  
Hard Thermal Loops

We discuss aspects of the effective action that generates the "hard thermal loops" used in the resummation programme of Braaten and Pisarski.

scholarly journals Hard thermal loops, static response, and the composite effective action

1994 ◽  
Vol 49 (12) ◽  
pp. 6787-6793 ◽  
Author(s):  
R. Jackiw ◽  
Q. Liu ◽  
C. Lucchesi
Keyword(s):  
Effective Action ◽  
Static Response ◽  
Hard Thermal Loops

Batalin–Fradkin Approach to (1 + 1)-Dimensional Massive Vector Fields and the Gluonic Effective Action for Hard Thermal Loops

1997 ◽  
Vol 12 (20) ◽  
pp. 3587-3607 ◽  
Author(s):  
Hirohumi Sawayanagi
Keyword(s):  
Effective Action ◽  
Finite Temperature ◽  
Vector Fields ◽  
Original System ◽  
The Other ◽  
Quantum Level ◽  
Massive Vector ◽  
Usual Treatment ◽  
Hard Thermal Loops

The Lagrangian of (1 + 1)-dimensional massive vector fields is studied. Since this system has second class constraints, the method of Batalin–Fradkin, which introduces new fields to convert second class constraints into first class ones, is applied in an extended manner. Instead of the usual treatment, which uses the Stueckelberg field as a new field, we can use a pseudoscalar field. We will show there are at least two ways to introduce a pseudoscalar. At the quantum level, one way leads to the system that is equivalent to the original system, and the other way gives an inequivalent system. The relation of these two ways is clarified. As an application of the latter way, we consider QCD at finite temperature and the gluonic effective action for hard thermal loops is constructed.

The effective action of hard thermal loops in QCD

1990 ◽  
Vol 346 (1) ◽  
pp. 115-128 ◽  
Author(s):  
J.C. Taylor ◽  
S.M.H. Wong
Keyword(s):  
Effective Action ◽  
Hard Thermal Loops

FERMIONS IN SEVERAL EXTERNAL FIELDS

1986 ◽  
Vol 01 (02) ◽  
pp. 141-148 ◽  
Author(s):  
B.V. IVANOV
Keyword(s):  
Green Function ◽  
Dirac Operator ◽  
Effective Action ◽  
Proper Time ◽  
Dirac Fermions ◽  
External Fields ◽  
Operator Solution ◽  
Gravitational Fields ◽  
Point Splitting ◽  
The Green Function

The effective action for 2-dimensional massless Dirac fermions in Abelian, non-Abelian and gravitational fields present together, is found by the proper-time method. The factorization of the Dirac operator induces factorization of the determinant, the Green function, the vacuum current and the operator solution. The proper-time regularization is compared with the point-splitting one.

Hard thermal loops and their Noether currents

1993 ◽  
Vol 71 (5-6) ◽  
pp. 300-305 ◽  
Author(s):  
H. Arthur Weldon
Keyword(s):  
Angular Momentum ◽  
Effective Action ◽  
Energy Momentum Tensor ◽  
Axial Vector ◽  
Momentum Density ◽  
Momentum Tensor ◽  
Field Equations ◽  
Nonlocal Field ◽  
N Vector ◽  
Hard Thermal Loops

The effective action found by Braaten and Pisarski, and by Frenkel, Taylor, and Wong that summarizes all hard thermal loops is investigated. Nonlocal field equations for ψ and Aμ are derived. Nonlocal forms are constructed for the U(1)-vector and axial-vector currents, the SU(N)-vector and axial-vector currents, the energy-momentum tensor, and the angular momentum density.

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