Simon Fraser University
SFU Cosmology Seminars

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Tuesday, 23 October 2007, 14:30 in SSB7172

Dr. Wan-Il Park (KAIST)

A scenario of baryogenesis compatible with thermal inflation, and preheating

Most of models of baryogenesis are incompatible with thermal inflation which is the most compelling solution of cosmological moduli problem. We propose a simple model in which the MSSM plus neutrino mass term (LHu)^2 is supplemented by a minimal flaton sector to drive the thermal inflation. Under two very plausible assumptions, this model leads to thermal inflation followed by Affleck-Dine type leptogenesis along the LHu flat direction. The conservation of generated asymmetry in this model is non-trivial since Hubble parameter is negligible at the time of our Affleck-Dine leptogenesis. We demonstrate numerically that preheating does efficiently damp the amplitude of the Affleck-Dine field and that the lepton number is conserved as the result.

Seminars in 2007:

2007-10-05 14:30 in K9500 - Douglas Scott (UBC): The Standard Cosmological Model (physics colloquium)
2007-10-23 14:30 in SSB7172 - Wan-Il Park (KAIST): A scenario of baryogenesis compatible with thermal inflation, and preheating
2007-10-30 14:30 in SSB7172 - Alessandra Silvestri (Syracuse University): Scale-dependent growth of structure in viable f(R) theories
2007-11-13 14:30 in SSB7172 - Gong-Bo Zhao (SFU): Dark energy perturbation and its application on cosmology
2007-11-29 14:30 in IRMACS - Henk Hoekstra (University of Victoria): Weak lensing by large scale structure
2008-01-15 12:30 in IRMACS - Mustafa Amin (Stanford/KIPAC): A framework for probing gravity and dark energy on cosmological scales
2008-01-22 12:30 in IRMACS - Richard Battye (University of Manchester): Constraints on inflation models which predict cosmic strings
2008-01-24 13:30 in SSB7172 - John Moffat (University of Toronto/Perimeter): Modified gravity and its consequences for astronomy, astrophysics and cosmology
2008-01-31 13:00 in AQ4150 - Saurya Das (University of Lethbridge): Black holes and the problem of information loss (CAP Lecture)
2008-02-05 12:30 in IRMACS - Aaron Berndsen (SFU): Long-lived relics in warped reheating
2008-02-07 10:30 in IRMACS - Scott Dodelson (Fermilab): Dark matter vs. modified gravity
2008-02-07 13:30 in SSB7172 - Scott Dodelson (Fermilab): Fundamental physics from space (special colloquium)
2008-02-22 14:30 in AQ3181 - Andrei Frolov (SFU): Simulating the Big Bang (physics colloquium)
2008-03-28 14:30 in AQ3181 - Alexander Vilenkin (Tufts University): Many worlds in one (physics colloquium)
2008-04-01 12:30 in IRMACS - James Zibin (UBC): Restraining void models for cosmological acceleration
2008-05-13 11:00 in P8445B - Mark Wyman (Perimeter Institute): N-body Degravitation
2008-08-14 11:00 in SSB7109 - Prashanth Jaikumar (Institute of Mathematical Sciences, CIT, India): Astrophysics of dense quark matter

[ See complete seminar archives | iCal feed ]

Modified by Andrei Frolov <frolov@sfu.ca> on 2023-11-01