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SUMMARY:Oscillations in the Stochastic Gravitational Wave Background - Jac
 opo Fumagalli\, IAP Paris
DTSTART:20210611T120000Z
DTEND:20210611T130000Z
UID:TALK159331@talks.cam.ac.uk
CONTACT:Chandrima Ganguly
DESCRIPTION:Observational constraints and prospects for detection of featu
 res\, i.e. oscillations in the primordial\npower spectrum\, have so far co
 ncentrated on the CMB and Large Scale Structure surveys. After a broad int
 roduction\, I will show how different\nfeatures in the primordial spectrum
  lead to characteristic oscillatory patterns in the cosmological stochasti
 c gravitational wave background.\nProbing these features could\, for insta
 nce\, establish the existence of heavy particles beyond the reach of terre
 strial experiments\, and even test the inflationary paradigm or point to a
 lternatives to it. Further\, high energy embeddings of inflation often lea
 d to departures from the single-field slow-roll paradigm\, resulting in fe
 atures in the primordial scalar power spectrum.\nThis provides a clear tar
 get for gravitational wave observatories as well as a challenge for\ndevel
 oping dedicated data analysis techniques to look for this unique insight i
 nto the physics of the early universe.
LOCATION:Zoom
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