The Electroweak Phase Transition in a Magnetic Field

We study the finite temperature electroweak phase transition in an external hypercharge U(1) magnetic field H_Y, using lattice Monte Carlo simulations. For sufficiently small fields, H_Y/T^2 < 0.3, the magnetic field makes the first order transition stronger, but it still turns into a crossover f...

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Detalles Bibliográficos
Autores principales: Kajantie, K., Laine, M., Peisa, J., Rummukainen, K., Shaposhnikov, Mikhail E.
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Lattice
Acceso en línea:https://dx.doi.org/10.1016/S0550-3213(98)00854-2
http://cds.cern.ch/record/363727
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author Kajantie, K.
Laine, M.
Peisa, J.
Rummukainen, K.
Shaposhnikov, Mikhail E.
author_facet Kajantie, K.
Laine, M.
Peisa, J.
Rummukainen, K.
Shaposhnikov, Mikhail E.
author_sort Kajantie, K.
collection CERN
description We study the finite temperature electroweak phase transition in an external hypercharge U(1) magnetic field H_Y, using lattice Monte Carlo simulations. For sufficiently small fields, H_Y/T^2 < 0.3, the magnetic field makes the first order transition stronger, but it still turns into a crossover for Higgs masses m_H ~ 80 GeV. For larger fields but similar Higgs masses, a new phase appears instead of a crossover. In this phase, analogous to a type I superconductor, a single macroscopic tube of the symmetric phase, parallel to H_Y, penetrates through the broken phase. For the magnetic fields and Higgs masses studied, we did not see indications of the expected Ambjorn-Olesen phase, which should be similar to a type II superconductor.
id cern-363727
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
record_format invenio
spelling cern-3637272022-07-06T02:23:32Zdoi:10.1016/S0550-3213(98)00854-2http://cds.cern.ch/record/363727engKajantie, K.Laine, M.Peisa, J.Rummukainen, K.Shaposhnikov, Mikhail E.The Electroweak Phase Transition in a Magnetic FieldParticle Physics - LatticeWe study the finite temperature electroweak phase transition in an external hypercharge U(1) magnetic field H_Y, using lattice Monte Carlo simulations. For sufficiently small fields, H_Y/T^2 < 0.3, the magnetic field makes the first order transition stronger, but it still turns into a crossover for Higgs masses m_H ~ 80 GeV. For larger fields but similar Higgs masses, a new phase appears instead of a crossover. In this phase, analogous to a type I superconductor, a single macroscopic tube of the symmetric phase, parallel to H_Y, penetrates through the broken phase. For the magnetic fields and Higgs masses studied, we did not see indications of the expected Ambjorn-Olesen phase, which should be similar to a type II superconductor.We study the finite temperature electroweak phase transition in an external hypercharge U(1) magnetic field H_Y, using lattice Monte Carlo simulations. For sufficiently small fields, H_Y/T^2 < 0.3, the magnetic field makes the first order transition stronger, but it still turns into a crossover for Higgs masses m_H ~ 80 GeV. For larger fields, we observe a mixed phase analogous to a type I superconductor, where a single macroscopic tube of the symmetric phase, parallel to H_Y, penetrates through the broken phase. For the magnetic fields and Higgs masses studied, we did not see indications of the expected Ambjorn-Olesen phase, which should be similar to a type II superconductor.We study the finite temperature electroweak phase transition in an external hypercharge U(1) magnetic field H_Y, using lattice Monte Carlo simulations. For sufficiently small fields, H_Y/T^2 < 0.3, the magnetic field makes the first order transition stronger, but it still turns into a crossover for Higgs masses m_H ~ 80 GeV. For larger fields, we observe a mixed phase analogous to a type I superconductor, where a single macroscopic tube of the symmetric phase, parallel to H_Y, penetrates through the broken phase. For the magnetic fields and Higgs masses studied, we did not see indications of the expected Ambjorn-Olesen phase, which should be similar to a type II superconductor.We study the finite temperature electroweak phase transition in an external hypercharge U(1) magnetic field H Y , using lattice Monte Carlo simulations. For sufficiently small fields, H Y / T 2 ⪅ 0.3, the magnetic field makes the first-order transition stronger, but it still turns into a crossover for Higgs masses m H ⪅ 80 GeV For larger fields, we observe a mixed phase analogous to a type I superconductor, where a single macroscopic tube of the symmetric phase, parallel to H Y , penetrates through the broken phase. For the magnetic fields and Higgs masses studied, we did not see indications of the expected Ambjørn-Olesen phase, which should be similar to a type II superconductor.hep-lat/9809004CERN-TH-98-281NORDITA-98-56-HECERN-TH-98-281NORDITA-98-56-HEoai:cds.cern.ch:3637271998-09-02
spellingShingle Particle Physics - Lattice
Kajantie, K.
Laine, M.
Peisa, J.
Rummukainen, K.
Shaposhnikov, Mikhail E.
The Electroweak Phase Transition in a Magnetic Field
title The Electroweak Phase Transition in a Magnetic Field
title_full The Electroweak Phase Transition in a Magnetic Field
title_fullStr The Electroweak Phase Transition in a Magnetic Field
title_full_unstemmed The Electroweak Phase Transition in a Magnetic Field
title_short The Electroweak Phase Transition in a Magnetic Field
title_sort electroweak phase transition in a magnetic field
topic Particle Physics - Lattice
url https://dx.doi.org/10.1016/S0550-3213(98)00854-2
http://cds.cern.ch/record/363727
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AT shaposhnikovmikhaile theelectroweakphasetransitioninamagneticfield
AT kajantiek electroweakphasetransitioninamagneticfield
AT lainem electroweakphasetransitioninamagneticfield
AT peisaj electroweakphasetransitioninamagneticfield
AT rummukainenk electroweakphasetransitioninamagneticfield
AT shaposhnikovmikhaile electroweakphasetransitioninamagneticfield

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