Gauge invariant treatment of the electroweak phase transition

W. Buchmüller; Z. Fodor; A. Hebecker

doi:10.1016/0370-2693(94)90953-9

Gauge invariant treatment of the electroweak phase transition

W. Buchmüller, Z. Fodor, A. Hebecker

Physics

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45 Scopus citations

Abstract

We evaluate the gauge invariant effective potential for the composite field σ = 2Φ^†Φ in the SU(2)-Higgs model at finite temperature. Symmetric and broken phases correspond to the domains σ ≤ T²/ 3 and σ >T²/3, respectively. The effective potential increases very steeply at small values of σ. Predictions for several observables, derived from the ordinary and the gauge invariant effective potential, are compared. Good agreement is found for the critical temperature and the jump in the order parameter. The results for the latent heat differ significantly for large Higgs masses.

Original language	English (US)
Pages (from-to)	131-136
Number of pages	6
Journal	Physics Letters B
Volume	331
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(94)90953-9
State	Published - Jun 30 1994

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0370-2693(94)90953-9

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title = "Gauge invariant treatment of the electroweak phase transition",

abstract = "We evaluate the gauge invariant effective potential for the composite field σ = 2Φ†Φ in the SU(2)-Higgs model at finite temperature. Symmetric and broken phases correspond to the domains σ ≤ T2/ 3 and σ >T2/3, respectively. The effective potential increases very steeply at small values of σ. Predictions for several observables, derived from the ordinary and the gauge invariant effective potential, are compared. Good agreement is found for the critical temperature and the jump in the order parameter. The results for the latent heat differ significantly for large Higgs masses.",

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T1 - Gauge invariant treatment of the electroweak phase transition

AU - Buchmüller, W.

AU - Fodor, Z.

AU - Hebecker, A.

PY - 1994/6/30

Y1 - 1994/6/30

N2 - We evaluate the gauge invariant effective potential for the composite field σ = 2Φ†Φ in the SU(2)-Higgs model at finite temperature. Symmetric and broken phases correspond to the domains σ ≤ T2/ 3 and σ >T2/3, respectively. The effective potential increases very steeply at small values of σ. Predictions for several observables, derived from the ordinary and the gauge invariant effective potential, are compared. Good agreement is found for the critical temperature and the jump in the order parameter. The results for the latent heat differ significantly for large Higgs masses.

AB - We evaluate the gauge invariant effective potential for the composite field σ = 2Φ†Φ in the SU(2)-Higgs model at finite temperature. Symmetric and broken phases correspond to the domains σ ≤ T2/ 3 and σ >T2/3, respectively. The effective potential increases very steeply at small values of σ. Predictions for several observables, derived from the ordinary and the gauge invariant effective potential, are compared. Good agreement is found for the critical temperature and the jump in the order parameter. The results for the latent heat differ significantly for large Higgs masses.

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SP - 131

EP - 136

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -

Gauge invariant treatment of the electroweak phase transition

Abstract

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