Spectra of magnetic fields injected during baryogenesis

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Helical magnetic fields are injected into the cosmic medium during cosmological baryogenesis and can potentially provide a useful probe of the early universe. We construct a model to study the injection process during a first order phase transition and to determine the power spectra of the injected magnetic field. By Monte Carlo simulations we evaluate the Fourier space symmetric and helical power spectra of the magnetic field at the time the phase transition completes. The spectra are peaked at the scale given by the inverse size of bubbles at percolation and with a comparable width. These injected magnetic fields set the initial conditions for further cosmological magneto-hydrodynamical evolution.

Original languageEnglish (US)
Article number023008
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number2
DOIs
StatePublished - Jul 27 2010
Externally publishedYes

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magnetic fields
power spectra
bubbles
universe
injection
probes
simulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Spectra of magnetic fields injected during baryogenesis. / Ng, Yifung; Vachaspati, Tanmay.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 82, No. 2, 023008, 27.07.2010.

Research output: Contribution to journalArticle

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