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Quantum Tunnelling in Macroscopic Systems

  • A. O. Caldeira
Part of the NATO ASI Series book series (NSSB, volume 218)

Abstract

In this lecture I shall introduce the concept of metastable states (or phases) in macroscopic systems at very low temperatures. I shall particularly be interested in two specific examples: superconducting devices and anisotropic magnetic films. By applying some techniques previously used in quantum field theory I will be able to describe the decay of these metastable states by quantum mechanical tunnelling within the WKB approximation.

Keywords

Decay Rate Metastable State Cooper Pair Quantum Tunnelling Macroscopic System 
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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • A. O. Caldeira
    • 1
  1. 1.Instituto de Fisíca “Gleb Wataghin”Universidade Estadual de CampinasCampinasBrasil

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