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Inflationary Birefringence and Baryogenesis

Stephon H. S. Alexander
(
- Brown U.
)

Apr 3, 2016

7 pages

Published in:

Int.J.Mod.Phys.D 25 (2016) 11, 1640013

Published: Jun 6, 2016

e-Print:

1604.00703 [hep-th]

DOI:

10.1142/S0218271816400137

View in:

ADS Abstract Service

reference search26 citations

Citations per year

Abstract: (World Scientific)

A decade ago, the first leptogenesis model based on inflation was proposed, where the complex phase of the inflaton field carries lepton number [S. H. S. Alexander, M. E. Peskin and M. M. Sheikh-Jabbari, Phys. Rev. Lett. 96 (2006) 081301, arXiv:hep-th/0403069]. If the inflaton field is an axion, it can couple to gravitational waves and gauge fields via Chern–Simons invariants. Due to these couplings, birefringent gravitational and gauge primordial perturbations are created during inflation to generate a lepton asymmetry, establishing a possible connection between nonvanishing TB-parity-violating polarization cross-correlations and leptogenesis. We also discuss the prospect for a subset of these models which can directly source circular (V-mode) polarization in the CMB.

Note:

7 Pages, CPR 2015 Conference Proceedings

Baryogenesis
inflation
CMB polarization
perturbation: primordial
lepton: asymmetry
birefringence
polarization
leptogenesis
inflation
cosmic background radiation

References(26)

Figures(0)

[1]

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Stephon Haigh-Solom Alexander
(
- SLAC
)
,
Michael E. Peskin
(
- SLAC
)
,
Mohammad M. Sheikh-Jabbari
(
- Stanford U., ITP
)

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•
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•
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Stephon Alexander
(
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)

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•
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•
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Stephon Alexander
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•
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Stephon Alexander
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)
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Jerome Martin
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)

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)

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Stephon Alexander
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)
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Sam Cormack
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)
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Stephon Alexander
(
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Antonino Marciano
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David Spergel
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Work in progress

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POLARBEAR

Collaboration

•

Peter A.R. Ade
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•
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•
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