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VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Systematics of Adiabatic Modes in Cosmology
DTSTART:20171002T140000
DTEND:20171002T150000
DTSTAMP:20260924T100530Z
UID:af82c44152d11df19d860d3e12200df42da68b30e4761228f7a94371
CATEGORIES:Conferences - Seminars
DESCRIPTION:Sadra Jazayeri (IPM Teheran)\nWe present a systematic discussi
 on of adiabatic modes in FLRW cosmologies\, i.e. cosmological perturbation
 s that are locally approximated by a change of coordinates. We find new sc
 alar\, vector and tensor adiabatic modes. We also show that not only the c
 onstant tensor mode but also the tensor time dependent mode is adiabatic o
 n large scales. \nOur new modes decay with time in standard cosmologies b
 ut grow in contracting universes. Also we discuss that why some of these a
 diabatic modes are absent for the special case of a scalar field. We make 
 the connection between these adiabatic modes and soft theorems. In light o
 f the new time dependent adiabatic tensor modes\, we discuss a distinction
  between classical and quantum adiabatic modes. 
LOCATION:BSP 727 https://plan.epfl.ch/?room==BSP%20727
STATUS:CONFIRMED
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