Semiclassical calculation of decay rates |
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Authors: | A. Bessa C.A.A. de Carvalho E.S. Fraga |
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Affiliation: | aInstituto de Física, Universidade de São Paulo, C.P. 66318, São Paulo, SP, 05315-970, Brazil;bInstituto de Física, Universidade Federal do Rio de Janeiro, C.P. 68528, Rio de Janeiro, RJ 21941-972, Brazil |
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Abstract: | Several relevant aspects of quantum-field processes can be well described by semiclassical methods. In particular, the knowledge of non-trivial classical solutions of the field equations, and the thermal and quantum fluctuations around them, provide non-perturbative information about the theory. In this work, we discuss the calculation of the one-loop effective action from the semiclasssical viewpoint. We intend to use this formalism to obtain an accurate expression for the decay rate of non-static metastable states. |
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Keywords: | decay rates finite-temperature field theory |
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