Approach to Solving Quasiclassical Equations with Gauge Invariance

Sharma, P (2020) Approach to Solving Quasiclassical Equations with Gauge Invariance. In: Journal of Low Temperature Physics .

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Abstract

Quasiclassical equations with manifest gauge invariance are discussed in the context of unconventional singlet superconducting states in the static limit. Deviations of the quasiclassical propagator from its equilibrium solutions in the presence of magnetic fields and Hall terms are analysed in terms of a �small� parameter and a formulation developed to first order in �small�. A modified quasiclassical propagator is defined to this order that is a solution of a new gauge-invariant Eilenberger-like equation with a normalization condition. A Riccati parametrization with manifest gauge invariance is proposed. Riccati equations are derived to leading order in �small� that are directly applicable to superconducting systems in the presence of magnetic fields.

Item Type:	Journal Article
Publication:	Journal of Low Temperature Physics
Publisher:	Springer
Additional Information:	The copyright of this article belongs to Springer
Keywords:	Gages; Magnetic fields, Equilibrium solutions; First order; Gauge invariance; Leading orders; Parametrizations; Quasiclassical equations; Static limits; Superconducting state, Riccati equations
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	13 Aug 2020 12:20
Last Modified:	13 Aug 2020 12:20
URI:	http://eprints.iisc.ac.in/id/eprint/66193

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