Opening

• Nuria Rius (IFIC, Valencia University-CSIC)

Room: 1001-Primera-1-1-1 - Paterna. Seminario Welcoming words by the IFIC Director

Detection of gravitational waves with axion haloscopes

• Camilo Garcia Cely (IFIC, Valencia University-CSIC)

Room: 1001-Primera-1-1-1 - Paterna. Seminario Gravitational waves generate oscillating electromagnetic effects in the vicinity of external electric and magnetic fields. I will discuss this phenomenon with a particular focus on reinterpreting the results of axion haloscopes based on lumped-element detectors, which probe gravitational waves in the 100 kHz-100 MHz range. I will show that the DMRadio program will have the potential to discover not only the QCD axion but also exotic sources of gravitational waves. In the final part of my talk, I will discuss the corresponding detection prospects of primordial-black-hole binaries.

Probing dark Universe with gravitational Landau damping. Part I: Theoretical setting

• Flavio Bombacigno (IFIC, Valencia University-CSIC)

Room: 1001-Primera-1-1-1 - Paterna. Seminario We show as scalar polarizations of the gravitational wave spectrum can interact non-collisionally with astrophysical media, once the notions of gravitational plasma and kinematic Landau damping are properly formulated in modified theories of gravity. We analytically determine the damping rate of the scalar mode and we discuss the physical properties of the traversed medium in order such a phenomenon to occur.

Probing dark universe with gravitational Landau damping. Part II: numerics and extension to the beam-plasma system

• Fabio Moretti (IFIC, Valencia University-CSIC)

Room: 1001-Primera-1-1-1 - Paterna. Seminario We present a numerical method able to treat the case of large thermal velocity of the background distribution in the integration of the plasma dielectric function previously introduced. We exploit this technique to give quantitative estimates of the expected damping for sub-horizon modes interacting with the cosmological dark matter medium in the early Universe. Then, we extend our analysis by considering the case of a gravitational beam-plasma system. We demonstrate the possibility of inverse Landau damping, in which the energy is conveyed from the medium to the wave, resulting in an amplitude growth for the latter.

CosmoLattice: simulating the early universe in a box

• Francisco Torrenti (Basel University, Switzerland)

Room: 1001-Primera-1-1-1 - Paterna. Seminario In my talk I will present CosmoLattice: a new public code for lattice simulations of classical field theories in an expanding universe. The code is capable of simulating scalars, gauge fields and gravitational waves, and is currently being used in the study of relevant early universe scenarios. I will discuss its basic features and future updates, and explain how we can use it to characterize the post-inflationary reheating history.

Summary & Perspective

• Daniel G. Figueroa (IFIC, Valencia University-CSIC)

Room: 1001-Primera-1-1-1 - Paterna. Seminario

Discussion

• multiple speakers

Room: 1001-Primera-1-1-1 - Paterna. Seminario