Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8943637 | Nuclear Physics B | 2006 | 12 Pages |
Abstract
Starting from the equation of motion of the quantum operator of a real scalar field Ï in de Sitter space-time, a simple differential equation is derived which describes the evolution of quantum fluctuations ãÏ2ã of this field. Full de Sitter invariance is assumed and no ad hoc infrared cutoff is introduced. This equation is solved explicitly and in massive case our result agrees with the standard one. In massless case the large time behavior of our solution differs by sign from the expression found in earlier papers. A possible cause of discrepancy may be a spontaneous breaking of de Sitter invariance.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Alexander Dolgov, Diego N. Pelliccia,