BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Cosmic Archaeology with Gravitational Waves from Cosmic Strings - 
 Marek Lewicki (King's College London)
DTSTART:20180525T150000Z
DTEND:20180525T160000Z
UID:TALK105862@talks.cam.ac.uk
CONTACT:Francesco Coradeschi
DESCRIPTION:Cosmic strings are generic cosmological predictions of many ex
 tensions of the Standard Model of  particle  physics\,  such  as  a U(1)
 ′ symmetry  breaking phase  transition  in  the  early  universe.\nUnlik
 e other topological defects\, cosmic strings can reach a scaling regime  t
 hat  maintains  a  small  fixed  fraction  of  the total energy density  o
 f  the  universe  from  a very early epoch until today.  If present\, they
  will oscillate and generate gravitational waves with a frequency spectrum
  that imprints the dominant sources of total cosmic energy density through
 out the history of the universe.  We demonstrate that current and future g
 ravitational wave detectors\, such as LIGO and LISA\, could be capable of 
 measuring the frequency spectrum of gravitational waves  from  cosmic  str
 ings  and  discerning  the  energy composition of  the  universe  at  time
 s  well before primordial nucleosynthesis and the cosmic microwave backgro
 und where standard cosmology has yet to be tested.
LOCATION:MR13\, CMS (Pav. E\, reach from downstairs Central Core)
END:VEVENT
END:VCALENDAR