Primordial nucleosynthesis including radiative, Coulomb, and finite-temperature corrections to weak rates

1982 ◽  
Vol 26 (10) ◽  
pp. 2694-2706 ◽  
Author(s):  
Duane A. Dicus ◽  
Edward W. Kolb ◽  
A. M. Gleeson ◽  
E. C. G. Sudarshan ◽  
Vigdor L. Teplitz ◽  
...  
Keyword(s):  
Finite Temperature ◽  
Primordial Nucleosynthesis

scholarly journals SECOND-ORDER CORRECTIONS TO THE MAGNETIC MOMENT OF ELECTRON AT FINITE TEMPERATURE

2012 ◽  
Vol 27 (32) ◽  
pp. 1250188 ◽  
Author(s):  
SAMINA S. MASOOD ◽  
MAHNAZ Q. HASEEB
Keyword(s):  
Magnetic Moment ◽  
Finite Temperature ◽  
Heat Bath ◽  
Second Order ◽  
The Self ◽  
Electron Mass ◽  
Temperature Dependent ◽  
Primordial Nucleosynthesis ◽  
Physical Mass ◽  
The Magnetic Field

Magnetic moment of electron at finite temperature is directly related to the modified electron mass in the background heat bath. Magnetic moment of electron gets modified at finite temperature also, when it couples with the magnetic field, through its temperature-dependent physical mass. We show that the second-order corrections to the magnetic moment of electron is a complicated function of temperature. We calculate the self-mass induced thermal contributions to the magnetic moment of electron, up to the two-loop level, for temperatures valid around the era of primordial nucleosynthesis. A comparison of thermal behavior of the magnetic moment is also quantitatively studied in detail, around the temperatures below and above the nucleosynthesis temperature.

scholarly journals Primordial nucleosynthesis and finite temperature QED

2014 ◽  
Vol 23 (06) ◽  
pp. 1450059 ◽  
Author(s):  
Mahnaz Q. Haseeb ◽  
Obaidullah Jan ◽  
Omair Sarfaraz
Keyword(s):  
Finite Temperature ◽  
Big Bang ◽  
Light Nuclei ◽  
Neutron Decay ◽  
Electron Mass ◽  
Total Energy Density ◽  
Primordial Nucleosynthesis ◽  
Big Bang Model ◽  
Relative Change ◽  
The Universe

Abundances of light nuclei formed during primordial nucleosynthesis are predicted by Standard Big Bang Model (SBBM). Here, we evaluate the second-order quantum electro dynamics (QED) corrections to the change in these parameters during primordial nucleosynthesis due to modifications to mass and coupling using finite temperature effects. These are the contributions from the dynamically generated masses for electrons and photons in the finite temperature background. Relative variations in neutron decay rate, total energy density of the universe, relative change in neutrino temperature etc. with two-loops corrections to electron mass, at the timescale when QED corrections were relevant, have been estimated.

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

Evolution of nonlinear stationary formations in a quantum plasma at finite temperature

2021 ◽  
Vol 76 (4) ◽  
pp. 329-347
Author(s):  
Swarniv Chandra ◽  
Chinmay Das ◽  
Jit Sarkar
Keyword(s):  
Finite Temperature ◽  
Acoustic Waves ◽  
Quantum Plasma ◽  
Quantum Hydrodynamics ◽  
Stationary Structure ◽  
Gradual Evolution ◽  
Layer Structures ◽  
Model Equations ◽  
Electron Acoustic ◽  
Shock Fronts

Abstract In this paper we have studied the gradual evolution of stationary formations in electron acoustic waves at a finite temperature quantum plasma. We have made use of Quantum hydrodynamics model equations and obtained the KdV-Burgers equation. From here we showed how the amplitude modulated solitons evolve from double layer structures through shock fronts and ultimately converging into solitary structures. We have studied the various parametric influences on such stationary structure and also showed how the gradual variations of these parameter affect the transition from one form to another. The results thus obtained will help in the generation and structure of the structures in their respective domain. Much of the experiments on dense plasma will benefit from the parametric study. Further we have studied amplitude modulation followed by a detailed study on chaos.

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