This talk will discuss various aspects of predicting gravitational-wave signals from supercooled first-order phase transitions in models with classical scale invariance. Motivated by great prospects for observation of such a gravitational-wave signal, and by the consequent opportunities for reconstructing the parameters of the phase transition and the underlying model, I will present the route...
Theories beyond General Relativity typically contain at least one additional scalar degree of freedom, which effectively mediates an additional force. While this force must be highly suppressed in low-density environments--in order to pass current constraints--it generically leads to deviations from General Relativity in high-density / high-curvature environments, such as neutron stars and...
In this talk, I will discuss the effect of very low cosmic string tensions on the associated stochastic gravitational wave background. I will show that the gravitational wave spectrum is qualitatively different from the one produced by cosmic strings with larger tensions. In fact, it exhibits a very distinct oscillatory feature with dips in the amplitude at multiples of the frequency of the...
In this presentation, I will elucidate the mechanisms behind Primordial Black Hole formation, discuss their potential role as candidates for dark matter, explore their significance as gravitational wave sources, and delve into the methodologies employed for their detection.
The addition of right-handed neutrinos to the SM can simultaneously solve the problems of neutrino masses and the observed baryon asymmetry of the universe. Moreover, their presence can lead to new experimental observations, like neutrinoless double beta decay. I showcase ongoing research that explores the impact of higher-dimensional operators on the aforementioned phenomena.
