Jorma Louko Colloquium
Wed. Jun. 29 03:00 PM
- Wed. Jun. 29 04:00 PM
Location: UofW, Room 2M73
The Winnipeg Institute for Theoretical Physics Presents a Colloquium with:
Low Energy Lorentz Violation from High Energy Modified Dispersion
Many quantum theories of gravity propose Lorentz violating dispersion relations of the form ω=|k|f(|k|/M), with recovery of approximate Lorentz invariance at energy scales much below M. We show that a quantum field with this dispersion predicts drastic low energy Lorentz violation in atoms modelled as Unruh-DeWitt detectors, for any f that dips below unity somewhere. As an example, we show that polymer quantization motivated by loop quantum gravity predicts such Lorentz violation below current ion collider rapidities.