Nota de FísicaPublicado
Effective Langragian for Eletrodynamics and Avoidance of the Singular Origin of the Universe
M. Novello; J. M. Salim; V. A. Lorenci; R. Klippert
1998
Dados da publicação
- Autores
- M. Novello; J. M. Salim; V. A. Lorenci; R. Klippert
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 1998
- Descrição
- In the extremely condensed primordial era of our universe the structure of classical fields must be implemented by quantum corrections. In a semiclassical analysis one deals with quantum matter phenomena in a classical geometry that obeys Einstein field equations of general relativity. Among all natural process one can envisage in a universe endowed with a huge number of photons the most natural ones are those related to electromagnetic fields. The corrections to Maxwell electrodynamics arising from the quantum domain were calculated by Heisenberg and Euler [1]. We show here that the net consequence of applying such corrections to a spatially homogeneous and isotropic metric structure is to forbid the appearance of a primordial singularity in the FRW geometry. Such result is not fundamentally modified by any other form of matter,except by a very exotic and unrealistic one. We conclude that the presence of such singularity is incompatible with the quantum laws of physics in the semiclassical regime.
- Ano
- 1998
- Número
- CBPF-NF-043/98
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não