TL;DR
This paper introduces a spherical field formalism for free gauge fields, analyzing the spherical Hamiltonian structure and computing gauge-field correlators, revealing new features compared to scalar fields.
Contribution
It presents a novel spherical gauge field formalism, detailing the Hamiltonian structure and correlator computations, which were not previously explored for gauge fields.
Findings
New features in the spherical Hamiltonian for gauge fields
Explicit computation of gauge-field correlators
Differences from scalar field case identified
Abstract
We introduce the spherical field formalism for free gauge fields. We discuss the structure of the spherical Hamiltonian for both general covariant gauge and radial gauge and point out several new features not present in the scalar field case. We then use the evolution equations to compute gauge-field and field-strength correlators.
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