Physics NotePublished
Effective Langragian for Eletrodynamics and Avoidance of the Singular Origin of the Universe
M. Novello; J. M. Salim; V. A. Lorenci; R. Klippert
1998
Publication details
- Authors
- M. Novello; J. M. Salim; V. A. Lorenci; R. Klippert
- Type
- Physics Note
- Status
- Published
- Publication date
- 1998
- Description
- 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.
- Year
- 1998
- Number
- CBPF-NF-043/98
- Linked to a thesis
- No
- Linked to a grant
- No