Deconfined SU(2) phase with a massive vector boson triplet
Bernd A. Berg
TL;DR
This paper presents a lattice simulation study of a gauge model with SU(2) and U(1) fields, revealing a deconfining phase transition and the emergence of a massive vector boson triplet in the deconfined phase.
Contribution
It introduces a new SU(2) and U(1) gauge model with a local U(2) symmetry and demonstrates its phase structure through lattice simulations.
Findings
Evidence of a zero-temperature SU(2) deconfining phase transition.
Detection of a massive vector boson triplet in the deconfined phase.
Support for the breaking of SU(2) center symmetry.
Abstract
We introduce a model of SU(2) and U(1) vector fields with a local U(2) symmetry. Its action can be obtained in the London limit of a gauge invariant regularization involving two scalar fields. Evidence from lattice simulations of the model supports a (zero temperature) SU(2) deconfining phase transition through breaking of the SU(2) center symmetry, and a massive vector boson triplet is found in the deconfined phase.
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