Speaker:听Domenico Frattulillo, who is part of our research unit and has completed his PhD recently. He is going to talk about phenomenology in quantum gravity.
Abstract:听Over the last 20 years there has been considerable interest in the possibility of quantum-gravity induced in-vacuo dispersion, namely the possibility that spacetime itself might behave like a dispersive medium for particle propagation.
The way in which in-vacuo dispersion produces redshift-dependent corrections to the time of flight of astrophysics particles depends on the model-dependent interplay between Planck-scale effects and spacetime curvature/expansion. I present the most general formula for the leading order redshift-dependent correction to the time of flight for the scenario in which relativistic symmetries are deformed at the Planck scale (DSR).
Finally, in the second part of the talk, I present how it is possible to test in-vacuo dispersion through Gamma ray bursts data. In fact, observations of GRBs, which in general have high redshift distances and emit (nearly-)simultaneously photons of different energies and (probably) neutrinos, could be well suited for finding a manifestation of this novel energy dependence of the speed.
Location:听
You can also (passcode: 060379).
The event is open to all.
Abstract:听Over the last 20 years there has been considerable interest in the possibility of quantum-gravity induced in-vacuo dispersion, namely the possibility that spacetime itself might behave like a dispersive medium for particle propagation.
The way in which in-vacuo dispersion produces redshift-dependent corrections to the time of flight of astrophysics particles depends on the model-dependent interplay between Planck-scale effects and spacetime curvature/expansion. I present the most general formula for the leading order redshift-dependent correction to the time of flight for the scenario in which relativistic symmetries are deformed at the Planck scale (DSR).
Finally, in the second part of the talk, I present how it is possible to test in-vacuo dispersion through Gamma ray bursts data. In fact, observations of GRBs, which in general have high redshift distances and emit (nearly-)simultaneously photons of different energies and (probably) neutrinos, could be well suited for finding a manifestation of this novel energy dependence of the speed.
Location:听
You can also (passcode: 060379).
The event is open to all.
- Organizer: Quantum Field Theory Center
- Address:
- Contact Email: damiapaciarinim@qtc.sdu.dk
- Add to your calendar: