Speaker: 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: 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: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
Abstract: 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: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
- Organizer: Quantum Field Theory Center
- Address: Fioniavej 34, 5230 Odense M
- Contact Email: damiapaciarinim@qtc.sdu.dk
- Add to your calendar: https://eom.sdu.dk:443/events/ical/02bacba0-3ae7-4d00-8b1b-76709f5fe1eb