Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-07-15
Phys. Rev. D 84, 105009 (2011)
Physics
High Energy Physics
High Energy Physics - Theory
40 pages, 1 figure
Scientific paper
10.1103/PhysRevD.84.105009
The problem of the vacuum energy decay is studied for both signs of the cosmological constant, through the analysis of the vacuum survival amplitude, defined in terms of the {\em conformal time}, $z$, by ${\mathcal A}(z,z^\prime)\equiv <\text{vac}\,z|\text{vac}\,z^\prime>$. Transition amplitudes are computed for finite time-span, $Z\equiv z^\prime-z$, and their {\em late time} behavior (directly related to the putative decay width of the state) as well as the transients are discussed up to first order in the coupling constant, $\lambda$.
Alvarez Enrique
Vidal Roberto
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