QED at Finite Temperature and Density: Renormalization in hot and dense medium, effective parameters of Quantum Electrodynamics, astrophysics, cosmology - Couverture souple

Masood, Samina

 
9783847306047: QED at Finite Temperature and Density: Renormalization in hot and dense medium, effective parameters of Quantum Electrodynamics, astrophysics, cosmology
Couverture souple
ISBN 10 : 3847306049 ISBN 13 : 9783847306047
Editeur : LAP LAMBERT Academic Publishing, 2012

Synopsis

Renormalization and radiative corrections in QED are studied at finite temperature and density. We use the Fermi-Dirac and Bose-Einestein distribution functions in a real-time formalism to generalize the calculations of the electron mass, wavefunction and charge renormalization constants, at high temperatures and chemical potentials. Further, the radiative corrections to the decay rate of a neutral scalar particle H → e⁺e⁻ and the leptonic decay of Z boson are re-examined at high temperatures and chemical potentials. Renormalization constants of QED are calculated for μ > T and T> μ in the limit T→0 and μ < m. We also study the effects of the statistically corrected physical mass of electron on its anomalous magnetic moment and on the beta decay processes affecting the parameters of primordial nucleosynthesis. It is shown that the helium abundance parameter, energy density of the universe and the leptonic decay rates become implicit functions of temperature and density. Density effects are not important from the point of view of the early universe. However, these results are expected to be applicable to superdense stars.

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Présentation de l'éditeur

Renormalization and radiative corrections in QED are studied at finite temperature and density. We use the Fermi-Dirac and Bose-Einestein distribution functions in a real-time formalism to generalize the calculations of the electron mass, wavefunction and charge renormalization constants, at high temperatures and chemical potentials. Further, the radiative corrections to the decay rate of a neutral scalar particle H → e⁺e⁻ and the leptonic decay of Z boson are re-examined at high temperatures and chemical potentials. Renormalization constants of QED are calculated for μ > T and T> μ in the limit T→0 and μ < m. We also study the effects of the statistically corrected physical mass of electron on its anomalous magnetic moment and on the beta decay processes affecting the parameters of primordial nucleosynthesis. It is shown that the helium abundance parameter, energy density of the universe and the leptonic decay rates become implicit functions of temperature and density. Density effects are not important from the point of view of the early universe. However, these results are expected to be applicable to superdense stars.

Biographie de l'auteur

Samina Masood is a part of Physics faculty and chair Physical Sciences program at University of Houston Clear Lake. She started her Physics career from Quaid-i-Azam University, Islamabad, Pakistan. She is a recipient of Salam prize of 1993, awarded to young Pakistani Physicists. She has master degree in Urdu literature and writes poetry also.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2012
Langue
anglais
ISBN 10 
3847306049
ISBN 13 
9783847306047
Reliure
Broché
Nombre de pages
112
Coordonnées du fabricant
non disponible
Personne responsable
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