Conveners
Theory
- Sunghoon Jung (Korea Institute for Advanced Study (KIAS))
Theory
- Pedro Schwaller
Theory
- There are no conveners in this block
Theory
- There are no conveners in this block
Theory
- Anish Ghoshal (University of Warsaw, Poland)
Theory
- There are no conveners in this block
Theory
- Geraldine Servant (Deutsches Elektronen-Synchrotron (DE))
Theory
- Giancarlo Cella (INFN - National Institute for Nuclear Physics)
A key dividing line in the dark matter community is between the wave and particle regimes. This division can be applied to any bosonic state, and for gravitational energy density the boundary cuts right through the ultra-high frequency regime. I will discuss the implications of this for instruments looking to detect a signal in the regime where gravity is a dilute gas of gravitons, and explain...
Primordial Black Holes might have originated in the early universe from the collapse of large overdensities and could constitute a sizeable portion of dark matter. Recently, they have gained considerable attention because of the various gravitational wave (GW) signatures associated with this scenario, making them testable with current and future GW experiments. In this talk, I will provide an...
Since the models of inflation compatible with CMB data require non-renormalizable inflaton potentials, it is natural to have extra couplings between inflaton and gravitons. The suppression scale of such operators can well be lower than the Planck scale. Due to these couplings, inflaton can produce high frequency gravitons during reheating due to both decay and bremsstrahlung process. In my...
The thermal plasma in the early universe produced a guaranteed stochastic gravitational wave (GW) background, which peaks today in the microwave regime and was dubbed the cosmic gravitational microwave background (CGMB). The CGMB spectrum encodes fundamental information about particle physics and gravity at ultra high energies. In particular, one can determine from the CGMB spectrum the...
There has recently been an increased interest in electro-magnetic GW detectors, due to the first detections of GWs and the rapid evolution of the technology driven by searches for light dark matter. The question how to calculate the response of e.g. a cavity to a GW has been debated since the 80s and the current understanding is that the usage of a special frame, the proper detector frame, is...
Recent advances in high-energy and high-peak-power laser systems have opened up new possibilities for fundamental physics research.
I propose to discuss the potential of twisted light for the generation of gravitational waves in the high frequency regime.
Focusing on Bessel beams, analytic expressions and numerical computations for the generated metric perturbations and associated powers...
In this talk I will try to clarify the situation about astrophysical sources that might be observed with haloscope experiments like GrAHal, sensitive to gravitational waves in the 1-10 GHz band. The GrAHal setup is taken as a benchmark. We follow a very pedagogical path so that the full analysis can easily be used by the entire community who might not be familiar with the theoretical...
