Abstract
We study the generation of magnetic field seeds during a first-order electroweak phase transition, by numerically evolving the classical equations of motion of the bosonic electroweak theory on the lattice. The onset of the transition is implemented by the random nucleation of bubbles with an arbitrarily oriented Higgs field in the broken phase. We find that about 10% of the latent heat is converted into magnetic energy, with most of the magnetic fields being generated in the last stage of the phase transition when the Higgs oscillates around the true vacuum. The energy spectrum of the magnetic field has a peak that shifts towards larger length scales as the phase transition unfolds. By the end of our runs the peak wavelength is of the order of the bubble percolation scale, or about a third of our lattice size.
Original language | English (US) |
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Article number | 083006 |
Journal | Physical Review D |
Volume | 100 |
Issue number | 8 |
DOIs | |
State | Published - Oct 10 2019 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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In: Physical Review D, Vol. 100, No. 8, 083006, 10.10.2019.
Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Magnetic field production at a first-order electroweak phase transition
AU - Zhang, Yiyang
AU - Vachaspati, Tanmay
AU - Ferrer, Francesc
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PY - 2019/10/10
Y1 - 2019/10/10
N2 - We study the generation of magnetic field seeds during a first-order electroweak phase transition, by numerically evolving the classical equations of motion of the bosonic electroweak theory on the lattice. The onset of the transition is implemented by the random nucleation of bubbles with an arbitrarily oriented Higgs field in the broken phase. We find that about 10% of the latent heat is converted into magnetic energy, with most of the magnetic fields being generated in the last stage of the phase transition when the Higgs oscillates around the true vacuum. The energy spectrum of the magnetic field has a peak that shifts towards larger length scales as the phase transition unfolds. By the end of our runs the peak wavelength is of the order of the bubble percolation scale, or about a third of our lattice size.
AB - We study the generation of magnetic field seeds during a first-order electroweak phase transition, by numerically evolving the classical equations of motion of the bosonic electroweak theory on the lattice. The onset of the transition is implemented by the random nucleation of bubbles with an arbitrarily oriented Higgs field in the broken phase. We find that about 10% of the latent heat is converted into magnetic energy, with most of the magnetic fields being generated in the last stage of the phase transition when the Higgs oscillates around the true vacuum. The energy spectrum of the magnetic field has a peak that shifts towards larger length scales as the phase transition unfolds. By the end of our runs the peak wavelength is of the order of the bubble percolation scale, or about a third of our lattice size.
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U2 - 10.1103/PhysRevD.100.083006
DO - 10.1103/PhysRevD.100.083006
M3 - Article
AN - SCOPUS:85074366047
SN - 2470-0010
VL - 100
JO - Physical Review D
JF - Physical Review D
IS - 8
M1 - 083006
ER -