Lorentz Violations in Gravity: Part II


D. Blas (IFAE - UAB), M. Herrero-Valea (IFAE - UAB)

Lorentz symmetry allows for reconciling Maxwell’s electromagnetism with the principle of relativity, which states that the result of experiments should be the same for all inertial observers. This reconciliation was the basis of Einstein’s Special Relativity. Einstein later formulated General Relativity as a Lorentz symmetric completion of Newtonian gravity. Today, much of theoretical physics is built on Lorentz symmetry as a cornerstone of the standard model of particle physics. Given how embedded this symmetry is in our understanding of Nature, any hint of its violation would shake physics at its core.

Given its importance, it is quite surprising that bounds on Lorentz symmetry violations in gravity are rather weak, compared to the exquisite tests of this symmetry that have been carried out in the matter sector. This knowledge gap is even more striking in the light of recent developments in quantum gravity, whereby giving up Lorentz symmetry (and in particular boost symmetry) allows for constructing gravitational theories that are power counting and perturbatively renormalizable, e.g. Horava gravity.

This workshop will focus on Lorentz violations in gravitational physics from both a theoretical and phenomenological/astrophysical point of view, bringing together the most prominent researchers in the field. This is envisioned as a second meeting following a very successful one organized in Italy in 2023.

Key participants

- Dr. M. Herrero-Valea (IFAE) (organizer)
- Prof. D. Blas (IFAE) (organizer)
- Prof. S. Sibiryakov (Perimeter Institute for Theoretical Physics)
- Prof. Stefano Liberati (SISSA)
- Prof. D. Mattingly (New Hampshire U.)
- Dr. Z. Yan (Nordita)
- Mr. F. del Porro (SISSA)
- Dr. M. Schneider (SISSA)
- Prof. E. Barausse (SISSA)
- Dr. M. Rubio (SISSA)
- Prof. J. Bellorín (University of Antofagasta)

Registration fee information

The registration fee for this conference is 300 eur.

Pay by bank transfer

The registration fee must be paid to the account of the Centro de Ciencias de Benasque Pedro Pascual after your application has been accepted.

Ibercaja (account number): 2085 2310 3803 3004 4193
IBAN: ES44 2085 2310 3803 3004 4193

Remember that your registration is complete only after the payment is made.

* Please, pay after your application has been accepted.
* Please, send a confirmation by e-mail to info@benasque.org.
* Please pay all bank charges
* Include as a subject in the transfer '2024lorentz Your_Surname'
* In the comments section include:
      Full name of the conference and your name.

Pay by credit card

Credit card online payments here.

* You have to be registered.
* Please, pay after your application has been accepted.

*Cancellation Policy*
A 30 euro charge will be applied for cancellations made up to 10 days before the conference start date.
A no refund policy will be applied to cancellations made after this date.

Bus transportation

The center provides free buses:
From Barcelona, Universitat de Barcelona, Diagonal 686, Metro: L3 Palau Reial at 15:00h (Note that the bus stops opposite University of Barcelona, Facultat de Física i Química)

From Barcelona airport ('El Prat', Terminal T2A: on leaving exit, turn left and you will find a police building called 'Mossos d'Esquadra'.
Cross the road using the zebra crossing and turn left. The bus will stop there) at 15:30h.

Return buses:
From Benasque to Barcelona airport and then university, departure at 9:00h.
The trip by bus to Barcelona takes 4-5h. approximately. The trip by car only takes 3h 30m.

Bus trajectories and dates:
- Barcelona - Benasque, Dec 09.
- Benasque - Barcelona, Dec 13.

Registration & accommodation

Application deadline is October 05

Further Information.

  • List of participants.
  • Scientific program.
  • Pictures