scholarly journals Hard thermal loops and beyond in the finite temperature world-line formulation of QED

2001 ◽  
Vol 63 (12) ◽  
Author(s):  
R. Venugopalan ◽  
J. Wirstam
Keyword(s):  
Finite Temperature ◽  
World Line ◽  
Hard Thermal Loops

scholarly journals PLASMON INTERACTIONS IN THE QUARK–GLUON PLASMA

2001 ◽  
Vol 16 (07) ◽  
pp. 1249-1259 ◽  
Author(s):  
D. METAXAS ◽  
V. P. NAIR
Keyword(s):  
Perturbation Theory ◽  
Quark Gluon Plasma ◽  
Finite Temperature ◽  
Gluon Plasma ◽  
Creation And Annihilation Operators ◽  
Yang Mills ◽  
Starting Point ◽  
Hard Thermal Loops

We construct plasmon creation and annihilation operators for Yang–Mills theory at finite temperature. This provides a starting point for perturbation theory with resummation of hard thermal loops in a Hamiltonian framework.

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 kinematics of a point particle

2018 ◽  
Author(s):  
Nathalie Deruelle ◽  
Jean-Philippe Uzan
Keyword(s):  
Internal Structure ◽  
Proper Time ◽  
World Line ◽  
Point Particle ◽  
Material Point ◽  
Spatial Extent ◽  
Geometric Representation ◽  
Mathematical Result ◽  
Point Particles ◽  
The World

This chapter discusses the kinematics of point particles undergoing any type of motion. It introduces the concept of proper time—the geometric representation of the time measured by an accelerated clock. It also describes a world line, which represents the motion of a material point or point particle P, that is, an object whose spatial extent and internal structure can be ignored. The chapter then considers the interpretation of the curvilinear abscissa, which by definition measures the length of the world line L representing the motion of the point particle P. Next, the chapter discusses a mathematical result popularized by Paul Langevin in the 1920s, the so-called ‘Langevin twins’ which revealed a paradoxical result. Finally, the transformation of velocities and accelerations is discussed.

scholarly journals Unblocking of stellar electron capture for neutron-rich N=50 nuclei at finite temperature

2020 ◽  
Vol 101 (2) ◽  
Author(s):  
Alan A. Dzhioev ◽  
K. Langanke ◽  
G. Martínez-Pinedo ◽  
A. I. Vdovin ◽  
Ch. Stoyanov
Keyword(s):  
Electron Capture ◽  
Finite Temperature
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