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Title: Gravi-Leptogenesis: Leptogenesis From Gravity Waves in Pseudo-Scalar Driven Inflation Models

Abstract

In this talk we present a mechanism for leptogenesis which is based on gravity waves produced during inflation. We show that when inflation is driven by a pseudo-scalar field the metric perturbations generated during inflation can become birefringent, therefore giving a non-vanishing contribution to the gravitational triangle anomaly and sourcing lepton anti-lepton asymmetry. As this asymmetry is sourced by the fields which are active during inflation, it is not washed out or diluted by inflation. The amount of matter asymmetry generated in our model can be of realistic size for the parameters within the range of some inflationary scenarios and grand unified theories.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
900238
Report Number(s):
SLAC-PUB-12371
hep-ph/0701139; TRN: US200711%%317
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: In the Proceedings of IPM School and Conference on Lepton and Hadron Physics (IPM-LHP06), Tehran, Iran, 15-20 May 2006
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; EDUCATIONAL FACILITIES; GRAVITY WAVES; HADRONS; LEPTONS; METRICS; PHYSICS; Phenomenology-HEP,HEPPH

Citation Formats

Alexander, S.H., /Penn State U., Peskin, Michael E., /SLAC, Sheikh-Jabbari, M.M., and /IPM, Tehran. Gravi-Leptogenesis: Leptogenesis From Gravity Waves in Pseudo-Scalar Driven Inflation Models. United States: N. p., 2007. Web.
Alexander, S.H., /Penn State U., Peskin, Michael E., /SLAC, Sheikh-Jabbari, M.M., & /IPM, Tehran. Gravi-Leptogenesis: Leptogenesis From Gravity Waves in Pseudo-Scalar Driven Inflation Models. United States.
Alexander, S.H., /Penn State U., Peskin, Michael E., /SLAC, Sheikh-Jabbari, M.M., and /IPM, Tehran. Wed . "Gravi-Leptogenesis: Leptogenesis From Gravity Waves in Pseudo-Scalar Driven Inflation Models". United States. doi:. https://www.osti.gov/servlets/purl/900238.
@article{osti_900238,
title = {Gravi-Leptogenesis: Leptogenesis From Gravity Waves in Pseudo-Scalar Driven Inflation Models},
author = {Alexander, S.H. and /Penn State U. and Peskin, Michael E. and /SLAC and Sheikh-Jabbari, M.M. and /IPM, Tehran},
abstractNote = {In this talk we present a mechanism for leptogenesis which is based on gravity waves produced during inflation. We show that when inflation is driven by a pseudo-scalar field the metric perturbations generated during inflation can become birefringent, therefore giving a non-vanishing contribution to the gravitational triangle anomaly and sourcing lepton anti-lepton asymmetry. As this asymmetry is sourced by the fields which are active during inflation, it is not washed out or diluted by inflation. The amount of matter asymmetry generated in our model can be of realistic size for the parameters within the range of some inflationary scenarios and grand unified theories.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Feb 28 00:00:00 EST 2007},
month = {Wed Feb 28 00:00:00 EST 2007}
}

Conference:
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