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SUMMARY:Moment transport equations for non-Gaussianity - David Mulryne\, I
 mperial College
DTSTART:20101203T130000Z
DTEND:20101203T140000Z
UID:TALK27531@talks.cam.ac.uk
CONTACT:Dr Sebastien Renaux-Petel
DESCRIPTION:I will discuss a novel method for calculating the primordial n
 on-Gaussianity\nproduced by super-horizon evolution during inflation. The 
 method involves\nthe use of a transport equation to evolve statistical dis
 tributions from\nhorizon crossing until the end of inflation. Using this m
 ethod\, simple\nevolution equations for the moments of the distribution of
  the curvature\nperturbation $\\zeta$\, such as the variance and skewness\
 , can be derived.\nThis method possesses some advantages over existing tec
 hniques. Among them\,\nit can cleanly separate multiple sources of primord
 ial non-Gaussianity\, and\nleads to a clean numerical implementation. I wi
 ll argue there is a strong need for numerical\nmethods in multiple field m
 odels and show the results of some preliminary simulations.
LOCATION:Pavilion B Potter Room (B1.19)
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