Uncovering gauge-dependent critical order-parameter correlations by a stochastic gauge fixing at and continuous transitions
- ,
- ,
15 pages
Published in:
- Phys.Rev.B 110 (2024) 12, 125109
- Published: Sep 6, 2024
e-Print:
- 2405.13485 [hep-lat]
DOI:
- 10.1103/PhysRevB.110.125109 (publication)
View in:
Citations per year
Abstract: (APS)
We study the transitions that occur in the 3D -gauge -vector model and the analogous transitions occurring in the 3D -gauge Higgs model, corresponding to the -gauge -vector model with . At these transitions, gauge-invariant correlations behave as in the usual -vector (Ising for ) model. Instead, the non-gauge-invariant spin correlations are trivial and therefore the spin order parameter that characterizes the spontaneous breaking of the symmetry in standard -vector (Ising) systems is apparently absent. We define a gauge fixing procedure—we name it stochastic gauge fixing—that allows us to define a gauge-dependent vector field that orders at the transition and is therefore the appropriate order parameter for the symmetry breaking. To substantiate this approach, we perform numerical simulations for and . A finite-size scaling analysis of the numerical data allows us to confirm the general scenario: the gauge-fixed spin correlation functions behave as the corresponding functions computed in the usual -vector (Ising) model. The emergence of a critical vector order parameter in the gauge model shows the complete equivalence of the () and (Ising) universality classes.Note:
- 15 pages, 16 pdf figures, minor changes
- gauge fixing: stochastic
- invariance: gauge
- spin: correlation
- spin: correlation function
- scaling: finite size
- field theory: vector
- Ising model
- gauge dependence
- universality
- symmetry breaking
References(96)
Figures(16)
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