Name: BridgeQG Workshop - Bridging High-Energy Astrophysical Modelling and Lorentz Invariance Violation Studies
Start: 2026-02-04T07:00:00+01:00
End: 2026-02-06T18:00:00+01:00
Location: LAPP

lundi 2 février 2026
mardi 3 février 2026
mercredi 4 février 2026

08:00 Welcome and registration

08:00 - 09:00
Room: Auditorium
09:00 Introduction
09:00 - 10:30
Room: Auditorium
Contributions

09:00 Welcome and workshop presentation - Sami Caroff (LAPP)

09:10 Introduction on Quantum Gravity / Lorentz Invariance Violation theory and BridgeQG cost action - Giulia Gubitosi (University of Napoli Federico II and INFN)

09:40 General talk on LIV and source intrinsic effects - Tomislav Terzić (University of Rijeka, Faculty of Physics)

10:10 Discussion
10:30 Coffee Break

10:30 - 11:00
Room: Auditorium
11:00 State-of-the-art LIV studies with photons
11:00 - 12:30
Room: Auditorium
Contributions

11:00 Disentangling intrinsic source effects from LIV ones in time-lag researches with VHE gamma-rays by combining data from various observatories - Cyann PLARD (LPNHE - CNRS) Cyann Plard (LAPP)

11:30 gLike for Lorentz invariance violation time-of-flight searches: A joint-likelihood framework and thesis case study on BL Lacertae - Jelena Strišković

12:00 Discussion
12:30 Lunch
Lunch
12:30 - 14:00
Room: Auditorium
14:00 State-of-the-art LIV studies with photons
14:00 - 15:30
Room: Auditorium
Contributions

14:00 Phenomenology and Astrophysical Probes of Lorentz Invariance Violation and Doubly Special Relativity - Filip Reščić (University of Rijeka)

14:30 Constraints on LIV effects from EBL absorption using broadband blazar modeling - Online - Alberto Rosales De Leon (Observatoire de Paris)

15:00 Discussion
15:30 Coffee Break

15:30 - 16:00
Room: Auditorium
16:00 GRB modelling
16:00 - 17:30
Room: Auditorium
Contributions

16:00 Gamma-ray bursts as tools to study Lorentz invariance violation - Lara Nava (INAF)

16:30 To Be Confirmed - Online - Frédéric DAIGNE (Institut d'Astrophysique de Paris - Sorbonne Université)

17:00 Discussion
jeudi 5 février 2026
09:00 AGN modelling and observation
09:00 - 10:30
Room: Auditorium
Contributions

09:00 Radiative models for rapid blazar flares - a quick overview - Andreas Zech (LUTH - Observatoire de Paris)

09:30 Developments and challenges in neutrino source modeling - Xavier Rodrigues (APC)

10:00 Discussion
10:30 Coffee Break

10:30 - 11:00
Room: Auditorium
11:00 AGN modelling and observation
11:00 - 12:30
Room: Auditorium
Contributions

11:00 Investigating AGN Variability with the Cherenkov Telescope Array - Guillaume Grolleron

11:30 Variable extragalactic sources with the LST(s): Status and prospects - David Sanchez (LAPP/IN2P3)

12:00 Discussion
12:30 Lunch
Lunch
12:30 - 14:00
Room: Auditorium
14:00 Neutrinos
14:00 - 14:30
Room: Auditorium
Contributions

14:00 Quantum gravity with high-energy cosmic neutrinos - Mauricio Bustamante Ramirez (Niels Bohr Institute, University of Copenhagen)
14:30 Multimessenger and Multiwavelength
14:30 - 15:30
Room: Auditorium
Contributions

14:30 Unknowns in multimessenger high-energy astrophysics and their influence in the search for Lorentz invariance violation - DENISE BONCIOLI (University of L'Aquila and INFN-LNGS)

15:00 Discussion
15:30 Coffee Break

15:30 - 16:00
Room: Auditorium
16:00 Multimessenger and Multiwavelength
16:00 - 17:30
Room: Auditorium
Contributions

16:00 Accelerating Multiwavelength and Multimessenger Data Modeling with Neural-Network Surrogates - Narek Sahakyan (ICRANet-Armenia)

16:30 Astrophysical Searches for Quantum Gravity: what multi-messenger observations can (and cannot) tell us - Rafael Alves Batista Rafael Alves Batista (Sorbonne Université, Institut d'Astrophysique de Paris)

17:00 Discussion
19:30 Social Dinner: Social Dinner
Social Dinner
19:30 - 22:00
Room: Auditorium
vendredi 6 février 2026
09:00 Disentangling LIV timelag from astrophysical effects
09:00 - 10:00
Room: Auditorium
Contributions

09:00 Distinguish timelags due to LIV effects from timelags induced by intrinsic effects - HELENE SOL (LUTH)

09:15 Tackling distinction between LIV timelag and intrinsic effects with minimalistic methods - Sami Caroff (LAPP)
10:00 What next ? Discussion on collaborative work, opportunities and funding
10:00 - 10:30
Room: Auditorium
Contributions

10:00 Collaboration / Funding / discussion - Julien Bolmont (LPNHE - SU/CNRS-IN2P3)
10:30 Coffee Break

10:30 - 11:00
Room: Auditorium

11:00 What next ? Discussion on collaborative work, opportunities and funding

11:00 - 12:30
Room: Auditorium

12:30 Lunch
Lunch
12:30 - 14:00
Room: Auditorium

14:00 Meeting Room 2 - working area

14:00 - 18:00
Room: Auditorium

Meeting room 1 - Gamma-LIV Working Group Meeting

14:00 - 16:00
Room: Auditorium