Nota de FísicaPublicado
On the Baryon Asymmetry of the Universe
Ivano Damião Soares
1993
Datos de la publicación
- Autores
- Ivano Damião Soares
- Tipo
- Nota de Física
- Estado
- Publicado
- Fecha de publicación
- 1993
- Descripción
- Based on symmetry transformations relating the Hamiltonian constraint of the radiation-dominated phase, and the Hamiltonian constraint of the matter-dominated phase of Robertson-Walker-Friedmann (RWF) universes, we derive an expression for the baryon asymmetry <math>n_B / n_\gamma \,\!</math> as a function of known thermodynamic constants, the gravitational constant, the radius of the present universe and the present temperature of the cosmic background radiation. The only parameter in the formula is the total number of (massless) degrees of freedom of relativistic particles composing the radiation density. We obtain <math>n_B/n_{\gamma}\sim 5.49 \times 10^{-10}\,\!</math>. Physical implications of this result are commented.
- Año
- 1993
- Número
- CBPF-NF-009/93
- Vínculo con tesis
- No
- Vínculo con beca
- No