The Third IUCSS Workshop on Gravitational Aspects of Lorentz Violation will be held as an online event hosted by the Physics Department, Indiana University in Bloomington, Indiana, U.S.A. on Thursday and Friday March 13-14, 2025. The second day of the Workshop coincides with Albert Einstein's 146th birthday.

The Workshop focus will primarily be on theoretical aspects of perturbative Lorentz and diffeomorphism breaking in gravitational contexts, with particular emphasis on EFT methods and the gravitational SME. Topics of current interest and prospects for future advances in this active field will be addressed. The Workshop format will consist of short live-streamed presentations and discussion time.

Subjects to be discussed at the Workshop are expected to include:

• origins and mechanisms for the breakdown of spacetime symmetries
• spontaneous and explicit violations of Lorentz and diffeomorphism invariance
• no-go results
• models for spontaneous Lorentz and diffeomorphism breaking
• nonminimal gravitational sector of the SME
• Nambu-Goldstone, massive, gauge, and auxiliary modes
• classical and quantum aspects of Lorentz-violating models
• EFT methods for Lorentz breaking involving gravity
• violations of the Einstein equivalence principle
• black-hole effects of Lorentz violation
• searches using gravitational waves
• cosmological aspects of Lorentz violation
• beyond-Riemann gravity
• Finsler geometry

There is no registration fee for this Workshop, but online registration by Friday March 7 is required. The total attendance is likely to be capped, so early registration is advised to avoid disappointment.