Physics – Quantum Physics
Scientific paper
2002-12-12
Physics
Quantum Physics
12 pages. Presented at the Seventh International Wigner Symposium. August 2001. College Park, MD, USA
Scientific paper
We study the quantum-mechanical tunneling phenomenon in models which include the existence of non-equivalent vacua. For such a purpose we evaluate the euclidean propagator between two minima of the potential at issue in terms of the quadratic fluctuations over the corresponding instantons. The effect of the multi-instanton configurations are included by means of the alternate dilute-gas approximation.
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