Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-02-17
Phys.Rev. D59 (1999) 123521
Physics
High Energy Physics
High Energy Physics - Theory
20 pages, 4 figures, submitted to PRD
Scientific paper
10.1103/PhysRevD.59.123521
The field-theoretical description of quantum fluctuations on the background of a tunneling field $\sigma$ is revisited in the case of a functional Schrodinger approach. We apply this method in the case when quantum fluctuations are coupled to the $\sigma$ field through a mass-squared term, which is 'time-dependent' since we include the dynamics of $\sigma$ . The resulting mode functions of the fluctuation field, which determine the quantum state after tunneling, display a previously unseen resonance effect when their mode number is comparable to the curvature scale of the bubble. A detailed analysis of the relation between the excitations of the field about the true vacuum (interpreted as particle creation) and the phase shift coming from tunneling is presented.
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