Quantum Metal--Superconductor Transition: A Local Field Theory Approach
Lubo Zhou, T.R. Kirkpatrick
TL;DR
This paper develops a local field theory to analyze the quantum phase transition between metal and superconductor in disordered systems, providing exact critical behavior through renormalization group analysis.
Contribution
It introduces a new effective local field theory that explicitly includes all soft modes for the quantum metal-superconductor transition in disordered systems.
Findings
Exact determination of quantum critical behavior.
Identification of soft modes in the transition.
Application of renormalization group analysis.
Abstract
The zero temperature, or quantum, metal-superconductor phase transition is studied in disordered systems in dimension greater than two. A effective local field theory is developed that keeps all soft modes or fluctuations explicitly. A simple renormalization group analysis is used to exactly determine the quantum critical behavior at this transition.
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