Semiclassical calculation of decay rates

✍ Scribed by A. Bessa; C.A.A. de Carvalho; E.S. Fraga

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 169 KB
• Volume: 820
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2009.01.057

✦ Synopsis

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.