Gravitational Wave Probes of Physics Beyond Standard Model 4

Session

Inflation2

23 Jun 2025, 11:30

Faculty of Physics, University of Warsaw

Conveners

Inflation2

• Kazunori Kohri (NAOJ / KEK /Kavli IPMU)

36. New avenues to the primordial GWB

Nicola Bartolo (U Padua)

23/06/2025, 11:30

• In this talk I will summarize some recent advancements about
  our understanding on how to pin down the
  nature of the inflationary GWs, from CMB scales down to much smaller
  scales as those probed by interferometers. In particular I will focus on
  aspects such as going beyond linear-order in perturbation theory,
  induced GWs, anisotropies of GWs, and GWs'potentialities to test
  fundamental...

12. Stochastic Gravitational Waves from Modulated Reheating

Michele Benaco (University of Jyväskylä)

23/06/2025, 12:15

We study stochastic gravitational waves (GW) sourced by a Higgs-like spectator field via the modulated reheating mechanism. The curvature perturbations generated by the spectator in de Sitter vacuum are blue-tilted and strongly non-Gaussian. They must be suppressed on scales probed by the CMB anisotropies but can grow large on sub-Mpc scales, generating observationally testable stochastic GWs....

43. Synergies of LISA and ET

Ms Alisha Marriott-Best (University of Swansea)

23/06/2025, 12:35

LISA and ET will operate in different frequency ranges but with comparable integrated sensitivities to a stochastic GW background (SGWB). We explore their synergies in detecting cosmological SGWBs with large amplitudes and broad frequency spectra, arising from sources such as cosmological phase transitions, cosmic strings, and primordial inflation. By combining measurements from both...