Cosmology in a non-standard statistical background

We study the primordial neutron to baryon ratio in a cosmological expanding background within the context of non-extensive statistics, in a fully analytical approach. First order corrections to the weak interaction rates and energy densities in the early universe are obtained and their consequences...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Torres, Diego F., Vucetich, Héctor
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 1998
Materias:
Física
Physics
Baryon
Moment (physics)
Annihilation
Weak interaction
Cosmology
Context (language use)
Theoretical physics
Nucleosynthesis
Quantum mechanics
Universe
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/122664
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-122664
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Physics
Baryon
Moment (physics)
Annihilation
Weak interaction
Cosmology
Context (language use)
Theoretical physics
Nucleosynthesis
Quantum mechanics
Universe
spellingShingle Física
Physics
Baryon
Moment (physics)
Annihilation
Weak interaction
Cosmology
Context (language use)
Theoretical physics
Nucleosynthesis
Quantum mechanics
Universe
Torres, Diego F.
Vucetich, Héctor
Cosmology in a non-standard statistical background
topic_facet Física
Physics
Baryon
Moment (physics)
Annihilation
Weak interaction
Cosmology
Context (language use)
Theoretical physics
Nucleosynthesis
Quantum mechanics
Universe
description We study the primordial neutron to baryon ratio in a cosmological expanding background within the context of non-extensive statistics, in a fully analytical approach. First order corrections to the weak interaction rates and energy densities in the early universe are obtained and their consequences on the Helium synthesis are analyzed. We find that, if the nucleosynthesis scenario should be in agreement with observation, this entails a very restrictive bound upon q, the non-extensive parameter. We also study some cosmologically interesting situations such as the moment of pair annihilation, conserved comoving quantities and derive for the nonextensive statistics, temperature relationships, before and after the removal of pairs.
format Articulo
Preprint
author Torres, Diego F.
Vucetich, Héctor
author_facet Torres, Diego F.
Vucetich, Héctor
author_sort Torres, Diego F.
title Cosmology in a non-standard statistical background
title_short Cosmology in a non-standard statistical background
title_full Cosmology in a non-standard statistical background
title_fullStr Cosmology in a non-standard statistical background
title_full_unstemmed Cosmology in a non-standard statistical background
title_sort cosmology in a non-standard statistical background
publishDate 1998
url http://sedici.unlp.edu.ar/handle/10915/122664
work_keys_str_mv AT torresdiegof cosmologyinanonstandardstatisticalbackground
AT vucetichhector cosmologyinanonstandardstatisticalbackground
bdutipo_str Repositorios
_version_ 1764820449078804482

Ejemplares similares