BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Reconstructing early universe physics with future LISA data - Dean
 na C Hooper(University of Helsinki)
DTSTART:20240603T120000Z
DTEND:20240603T130000Z
UID:TALK210796@talks.cam.ac.uk
CONTACT:Fiona McCarthy
DESCRIPTION:A gravitational wave background from a first order phase trans
 ition at the electroweak scale may be observable with future detectors suc
 h as LISA. While the Standard Model does not predict a first order phase t
 ransition\, these occur in many BSM scenarios\, including various dark mat
 ter models. Therefore\, detecting a stochastic gravitational wave backgrou
 nd could point to new physics\, while a null detection could constrain or 
 even exclude many BSM models. However\, finding a signal in LISA coming fr
 om an early universe phase transition is not straightforward\, due to the 
 expected instrument noises and astrophysical backgrounds\, such as a the o
 ne produced by a population of white dwarf binaries. In this talk I will p
 resent our recent advances in recovering injected phase transition signals
  in realistic simulated LISA data\, where we exploit the annual modulation
  of the astrophysical sources to improve the signal separation. I will als
 o discuss how we could map such a gravitational wave signal onto the under
 lying phase transition parameters by using parameterised templates as an a
 pproximation to a more complete physical model\, which greatly speeds up t
 he process.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
END:VEVENT
END:VCALENDAR