Quantum Tunnelling in Macroscopic Systems
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.
KeywordsDecay Rate Metastable State Cooper Pair Quantum Tunnelling Macroscopic System
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