BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Gravitational waves from phase transitions in the early Universe: 
 sound waves and MHD turbulence
DTSTART:20260423T100000Z
DTEND:20260423T113000Z
DTSTAMP:20260408T104300Z
UID:indico-event-2434@indico.ifae.es
DESCRIPTION:Speakers: Alberto Roper Pol\n\nGravitational waves (GWs) can b
 e produced by a first-order phase transition in the early Universe via the
  fluid perturbations induced in the primordial plasma by the expansion and
  collision of broken-phase bubbles. I will review the production of GWs by
  the anisotropic stresses of velocity and magnetic fields induced in a fir
 st-order phase transition and present recent developments on the analytica
 l estimates and numerical simulations that address the stochastic GW backg
 round produced by acoustic motion (sound waves) and magnetohydrodynamic (M
 HD) turbulence. These GWs could be detectable by current and future GW det
 ectors like LISA or PTA\, potentially providing us with direct clean infor
 mation of the physics at the high energies of the early Universe and probi
 ng beyond the Standard Model physics. In addition\, the presence of magnet
 ic fields at a phase transition leads to coupled non-linear fluid perturba
 tions\, described by MHD turbulence\, that will impact the cosmological GW
  background. The study of these effects can be used to put constraints on 
 primordial magnetic fields. These fields would evolve until present time a
 nd leave observable imprints in\, for example\, the CMB and in the cosmic 
 voids of the large-scale structure of the Universe\, allowing us to combin
 e GW observations with other cosmological and astrophysical observations i
 n a multi-messenger approach.\n\nhttps://indico.ifae.es/event/2434/
LOCATION:IFAE Seminar Room (In-Person)
URL:https://indico.ifae.es/event/2434/
END:VEVENT
END:VCALENDAR