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Inflation-Produced Magnetic Fields in R^n F^2 and I F^2 models · Around

2008

Inflation-Produced Magnetic Fields in R^n F^2 and I F^2 models

Campanelli, L., Cea, P., Fogli, G. L. et al.

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We re-analyze the production of seed magnetic fields during Inflation in (R/m^2)^n F_{\mu \nu}F^{\mu \nu} and I F_{\mu \nu}F^{\mu \nu} models, where n is a positive integer, R the Ricci scalar, m a mass parameter, and I \propto \eta^\alpha a power-law function of the conformal time \eta, with \alpha a positive real number.

If m is the electron mass, the produced fields are uninterestingly small for all n.
Taking m as a free parameter we find that, for n \geq 2, the produced magnetic fields can be sufficiently strong in order to seed dynamo mechanism and then to explain galactic magnetism.
For \alpha \gtrsim 2, there is always a window in the parameters defining Inflation such that the generated magnetic fields are astrophysically interesting.

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Similar

B. Ratra, Astrophys. J. 391
2000
Cited alongside, same era.
For reviews on cosmic magnetic fields see: L. M. Widrow, Rev. Mod. Phys. 74
2001
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A. Kosowsky and A. Loeb, Astrophys. J. 469
2001
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T. Prokopec and E. Puchwein, Phys. Rev. D 70
2004
Cited alongside, same era.

Then

For recent reviews on dynamo mechanisms see, e.g.: A. Brandenburg and K. Subramanian, Phys. Rept. 417
2005
Later among the works it cites.
R. E. Pudritz and J. Silk, Astrophys. J. 342
2006
Later among the works it cites.
K. Bamba and M. Sasaki, JCAP 0702
2007
Later among the works it cites.
L. Campanelli, P. Cea, G. L. Fogli, and L. Tedesco, Phys. Rev. D 77
2008
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