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Lorentz Violations in Gravity

WHEN /

WHERE /

July 10-14, 2023

Old SISSA Building
Aula D
Via Beirut, 2-4, 34151 Grignano TS

ABOUT THE EVENT /

Although local Lorentz invariance has been exquisitely tested in the matter sector of the Standard Model of Particle Physics, there is still a large room for violations of Lorentz symmetry in the gravitational sector. Actually, there are compelling theoretical reasons to consider such possibility at high energies, since Lorentz-violating operators can provide a UV completion of General Relativity in the form of a renormalizable theory of gravitation. This opens up a pandora box of new phenomenological features — black holes with universal horizons, gravitational wave signatures, new quantum gravitational phenomena, and new interactions with matter. However, even though the field has seen incredible advances in recent years, there are still many unanswered questions about the fate of Lorentz-violating gravity.


In this workshop, we bring together recognized world experts in modelling Lorentz-violating gravitational theories and their physical consequences, from quantum field theory results to observational predictions, and gravitational waves. Our goal is to allow for a transversal and multidisciplinary interaction among the different communities, enriching the discussion and putting forward new projects in
Lorentz-violating gravity.

Local Organizers /

Enrico Barausse, Stefano Liberati, Mario Herrero-Valea

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External Organizers /

Mario Herrero-Valea

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MONDAY 

  9:45 – 10:00  Opening
10:00 – 11:00  Diego Blas "Quo vadis, Lorentz invariance?”
11:00 – 11:30  coffee
11:30 – 12:30  Thomas Sotiriou

14:30 – 15:30  Alex Vikman "Bondi Accretion of the Self-Interacting Complex Scalar Field"

15:30 – 16:00  coffee

16:00 – 17:00  Jacopo Mazza “Black Holes in LIV Gravity: Regular and Rotating”

TUESDAY

10:00 – 11:00  Shinji Mukohyama "Horava-Lifshitz cosmology revisited"
11:00 – 11:30  coffee
11:30 – 12:30  Kevin Grosvenor "Heat Kernels in Lifshitz Theories"

14:30 – 15:30  Toby Wiseman “Rotating black holes in Einstein-Aether”

15:30 – 16:00  coffee

16:00 – 17:00  discussion

WEDNESDAY

10:00 – 11:00  Marcelo Rubio "An implicit scheme for evolving field theories with anisotropic scaling"
11:00 – 11:30  coffee
11:30 – 12:30  Mario Herrero-Valea “Challenges and successes in renormalization”

14:30 – 15:30  Ziqi Yan "Lifshitz Sigma Models and Quantum Gravity"

15:30 – 16:00  coffee

16:00 – 17:00  David Mattingly "Mixed Global-Gauge Symmetries in (LIV) Quantum Gravity"

THURSDAY

10:00 – 11:00  Marc Schneider "Resilience of Black Hole Evaporation“
11:00 – 11:30  coffee
11:30 – 12:30  Francesco Del Porro 

14:30 – 15:30  Andrew Kovachik "Slowly Moving Black Holes in HoÅ™ava Gravity: Revisited"

15:30 – 16:00  coffee

16:00 – 17:00  discussion

FRIDAY

09:30 – 10:30  Aron Kovacs "On the Cauchy problem in Horava-Lifshitz gravity"
10:30 – 11:00  coffee
11:00 – 12:00  IFPU Colloquium Jonathan Thompson "Advances in Precession Modelling for the Fourth LVK Observing Run"

12:00 – 13:00 final discussion

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