Magnetic Seed Field Generation from Electroweak Bubble Collisions, with Bubble Walls of Finite Thickness

Abstract

Building on earlier work, we develop an equation-of-motion method for calculating magnetic seed fields generated from currents arising from charged W fields in bubble collisions during a first-order primordial electroweak phase transition allowed in some proposed extensions of the standard model. The novel feature of our work is that it takes into account, for the first time, the dynamics of the bubble walls in such collisions. We conclude that for bubbles with sufficiently thin surfaces the magnetic seed fields may be comparable to, or larger than, those found in earlier work. Thus, our results strengthen the conclusions of previous studies that cosmic magnetic fields observed today may originate from seeds created during the electroweak phase transition, and consequently that these fields may offer a clue relevant to extensions of the standard model.

5 pages, 4 figures

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Cited by in corpus (12)

• The stochastic gravitational wave background from turbulence and magnetic fields generated by a first-order phase transition
• The origin, evolution and signatures of primordial magnetic fields
• Primordial magnetogenesis
• Gravitational Radiation Generated by Cosmological Phase Transition Magnetic Fields
• Polarized Gravitational Waves from Cosmological Phase Transitions
• Numerical simulations of the decay of primordial magnetic turbulence
• Phase Transition Generated Cosmological Magnetic Field at Large Scales
• Magnetic field generation from bubble collisions during first-order phase transition
• Detecting circular polarisation in the stochastic gravitational-wave background from a first-order cosmological phase transition
• EWPT Nucleation With MSSM and Electromagnetic Field Creation
• Charge asymmetry from CP-violating fermion scattering off bubble walls during the electroweak phase transition
• Primordial Magnetogenesis from Killing Vector Fields