The Euclidean Propagator in Quantum Models with Non-Equivalent Instantons

  • Javier CASAHORRAN, J. Casahorran
  • Published 2003


The tunnelling phenomenon represents one of the most outstanding effects in quantum theory. Starting from the pioneering work of Polyakov on the subject [1], the semiclassical treatment of the tunnelling is presented in terms of the Euclidean version of the path-integral formalism. The basis of this approach relies on the so-called instanton calculus. As… (More)


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