Large-scale magnetic fields in the inflationary universe - INSPIRE

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Large-scale magnetic fields in the inflationary universe

Nov, 2006

7 pages

Published in:

JCAP 02 (2007) 030

e-Print:

astro-ph/0611701 [astro-ph]

DOI:

10.1088/1475-7516/2007/02/030

Report number:

YITP-06-61

View in:

ADS Abstract Service

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Abstract: (arXiv)

The generation of large-scale magnetic fields is studied in inflationary cosmology. We consider the violation of the conformal invariance of the Maxwell field by dilatonic as well as non-minimal gravitational couplings. We derive a general formula for the spectrum of large-scale magnetic fields for a general form of the coupling term and the formula for the spectral index. The result tells us clearly the (necessary) condition for the generation of magnetic fields with sufficiently large amplitude.

98.80.Cq
98.62.En
symmetry breaking: conformal
magnetic field
inflation
power spectrum
dilaton: coupling
gauge field theory: U(1)

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Figures(0)

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