A Natural Gauge in Quantum Electrodynamics
Natalia Gorobey, Alexander Lukyanenko, and A. V. Goltsev
TL;DR
This paper introduces a new functional integral representation in quantum electrodynamics that naturally enforces gauge invariance by excluding gauge momentum, simplifying the analysis of the evolution operator.
Contribution
It presents a novel representation of the evolution kernel in QED that inherently incorporates a natural gauge condition, focusing on gauge invariant variables.
Findings
Simplifies the functional integral by excluding gauge momentum.
Enforces a natural gauge condition in the integral representation.
Focuses on gauge invariant canonical variables.
Abstract
An alternative representation of the kernel of the evolution operator in quantum electrodynamics is obtained in the form of a functional integral, in which the gauge momentum corresponding to the Gaussian constraint is excluded from the dynamics. The natural gauge condition, that arises as a result of this representation, leaves the integration only over gauge invariant canonical variables.
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Taxonomy
TopicsQuantum Mechanics and Applications · Relativity and Gravitational Theory · Quantum and Classical Electrodynamics