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Amplitudes, Strong-Field Gravity and Resummation, April 7-17 2026, Stockholm

Registration is now open for the Nordita Program on Amplitudes, Strong-Field Gravity and Resummation, to be held at Nordita (Stockholm, Sweden) from 7 to 17 April 2026.

The program is structured as follows:

Week 1 [April 7–10, 2026 (4 days)]: The PhD school will focus on foundations and tools for gravitational self-force, amplitudes, self-force EFT, resummation strategies and data analysis relevant to waveform modelling. Theoretical lectures will be complemented by hands-on programming sessions and dedicated tutorials.

Week 2 [April 13–17, 2026 (5 days)]: Workshop focused on uniting the weak-field (PM) and strong-field (GSF) approaches to the two-body problem, as well resummation strategies relevant for gravitational-wave phenomenology. Individual talks will be complemented by discussion sessions to promote cross-community interaction and constructive debates.

PhD School (7-10 April 2026)

Topics will include:

  1. Scattering amplitudes and the EFT approach to self-force.
    Lecturers: Nabha Shah (NBI) & Chia-Hsien Shen (Uppsala Univ. and NTU, Taiwan)
  2. Introduction to gravitational self-force theory.
    Lecturers: Leor Barack (Univ. of Southampton) and Barry Wardell (UCD)
  3. Introduction to Numerical Relativity, Resummation strategies and Data Analysis.
    Lecturer: Patricia Schmidt (Univ. of Birmingham)

Workshop (13-17 April 2026)

There is pressing need for high-precision models of gravitational waveforms from binary black hole mergers, driven by the increasing sensitivity of gravitational-wave detectors. The central theme of this program is how to leverage particle physics methods when calculating processes relevant to gravitational-wave phenomenology. In particular, the workshop focuses on uniting two key perturbative approaches — post-Minkowskian (PM) theory, effective for weak-field, widely separated systems, and gravitational self-force (GSF) theory, suited to extreme-mass-ratio systems in strong fields. Crucial to combining these tools is understanding the resummation of the perturbative series. We aim to bring together both experts and younger theorists from these communities, fostering new collaborations and combining our efforts to address the pressing questions at the interface between these fields.

Invited speakers: [* To be confirmed]

D. Akpinar (University of Edinburgh), L. Bohnenblust (Humboldt University), D. Bini* (IAC, Rome), A. Buonanno* (AEI, Potsdam), T. Damour* (IHES), J. Hoogeveen (Humboldt University), K. Lee (APCTP, Pohang), O. Long (AEI, Potsdam), J. Mathews (National University of Singapore), S. Mougiakakos (LUTH, Meudon), J. Parra-Martinez* (IHES), H. Pfeiffer (AEI, Potsdam), J. Plefka (Humboldt University), R. Porto (DESY), T. Rahnuma (APCTP, Pohang), P. Rettegno* (University of Turin), R. Russo (QMUL), J. Steinhoff (AEI, Potsdam), C-H. Shen (Uppsala University), M. van de Meent (NBI), A. Vaswani (University of Southampton), N. Warburton (UCD), Z. Zhou (Princeton).

Venue

The program will be hosted by Nordita in Stockholm (Sweden) from 7th – 17th April 2026.

Application/Registration

Due to limited space, registration will be moderated for both the PhD school and the workshop. You may apply to the PhD school only, the workshop only, or both. Registration to be considered for on-site participation will close on 31 January 2026; after this date, registrants will receive an on-site/remote participation confirmation from the organizers.

Remote participation: All talks will be livestreamed via Zoom, and recordings will be made available to registered participants who cannot attend in person.

Organizers

Lucile Cangemi — University of Edinburgh, United Kingdom
Paolo Di Vecchia — Nordita, Sweden
Riccardo Gonzo — Queen Mary University of London, United Kingdom
Chris Kavanagh — University College Dublin, Ireland
Adam Pound — University of Southampton, United Kingdom
Geraint Pratten — University of Birmingham, United Kingdom

Funding sources:

This workshop is partially supported by the UKRI/ERC grant GWModels.

Workshop Website

European Einstein Toolkit Meeting, December 1-5 2025, online

The Einstein Toolkit is a community-driven software platform of core computational tools to advance and support research in relativistic astrophysics and gravitational physics.

The meeting is open to anyone interested in the Einstein Toolkit.

Program highlights:

  • Introductory lectures
  • Hands-on tutorials on the Einstein Toolkit
  • Research talks
  • Showcases from other numerical relativity codes
  • Friday discussion session : The Future of the Einstein Toolkit in Europe

Registration is moderated and remains open throughout the meeting, but early registration is encouraged.
Abstract submission deadline: 14 November 2025, 23:59 GMT.

Contact
Beyhan Karakaş, beyhannkarakas(at)gmail.com
Rahime Matur, r.matur(at)soton.ac.uk
Ian Hawke, i.hawke(at)soton.ac.uk

Dates & Time 1-5 December 2025, 10:00-17:30 (GMT)

Location – Zoom (link will be sent to participants)

Speakers
Steve Brandt, Louisiana State University
Katy Clough, Queen Mary University of London
Peter Diener, Louisiana State University
Tim Dietrich, Universitat Potsdam
Zachariah B. Etienne, University of Idaho
Deborah Ferguson, University of Rhode Island
Francois Foucart, University of New Hampshire
Philippe Grandclement, Observatoire de Paris
Carsten Gundlach, University of Southampton
Roland Haas, The University of British Columbia
Peter Hammond, Albert Einstein Institute
Ian Hawke, University of Southampton
Kota Hayashi, Albert Einstein Institute
Liwei Ji, Rochester Institute of Technology
Jay Kalinani, University of Illinois Urbana-Champaign
Toru Kojo, High Energy Accelerator Research Organization (KEK)
Steven Liebling, Long Island University
Brian D. Metzger, Columbia University
Philipp Moesta, University of Amsterdam
Carlos Palenzuela, Universitat de les Illes Balears
David Radice, The Pennsylvania State University
Stephan Rosswog, University of Hamburg
Lucas Timotheo Sanches, Louisiana State University
Erik Schnetter, Perimeter Institute for Theoretical Physics
Leo R. Werneck, University of Idaho
Helvi Witek, University of Illinois Urbana-Champaign

Organisers
Beyhan Karakaş, Independent Researcher
Rahime Matur, University of Southampton
Ian Hawke, University of Southampton

Workshop Website

International LILA Meeting (2025 Lunar Gravitational-Wave Workshop), November 13-14 2025 at APL, Laurel, Maryland

The Johns Hopkins Applied Physics Laboratory (APL) and the Vanderbilt Lunar Labs Initiative cordially invite the scientific community to the International LILA Meeting (2025 Lunar Gravitational-Wave Workshop), to be held 13–14 November 2025 at APL, Laurel, Maryland, USA. This is the fifth annual meeting in the Lunar GW Workshop series, following Belle-Île-en-Mer (2024), Nashville (2023), Bern (2022) and Cascina (2021). The 2025 Lunar GW workshop will take place in Building 200 on APL’s South Campus.

This meeting continues community discussions on the Laser Interferometer Lunar Antenna (LILA) project – a proposed detector on the lunar surface to measure gravitational waves in the mid-band between ground-based detectors LIGO–Virgo–KAGRA and the future space mission LISA. The primary foci of this workshop will be on defining the science goals, instrument implementation, deployment timeline, and establishing the formal consortium structure for LILA. Sessions will include multi-messenger astrophysics, lunar geoscience, instrumentation, and technology development.

Scientific Organizing Committees

  • Karan Jani, Vanderbilt University (co-chair)
  • Jim Kinnison, Applied Physics Laboratory (co-chair)
  • James Trippe, Vanderbilt University (co-chair)
  • John Conklin, University of Florida
  • Stephen Eikenberry, University of Central Florida
  • Kris Izquierdo, Applied Physics Laboratory
  • Philippe Lognonné, Institut de Physique du Globe de Paris
  • Mark Panning, Jet Propulsion Laboratory
  • Volker Quetschke, University of Texas Rio-Grande Valley
  • Robert Reed, Vanderbilt University
  • Brett Shapiro, Applied Physics Laboratory
  • Joseph Silk, Johns Hopkins University

Workshop Website

In Pursuit of Gravitational Waves: Solving the Two-Body Problem in General Relativity, Potsdam, October 20-22, 2025

The year 2025 offers a fitting moment to reflect on the development of one of the most profound problems in general relativity: the relativistic two-body problem. Just over fifty years ago, the discovery of the Hulse–Taylor pulsar provided the first observational evidence for gravitational radiation from binary systems. Since then, key contributions have marked decisive steps forward, leading to the first detection of gravitational waves in 2015 by the LIGO-VIRGO collaboration. As we commemorate ten years since that historic achievement, this progression of achievements not only traces a remarkable trajectory of scientific progress but also underscores the crucial interplay between analytical, numerical, and experimental communities in advancing our understanding of the two-body problem and its foundational role in gravitational-wave astronomy.

Against this backdrop, the Balzan Workshop In Pursuit of Gravitational Waves: Solving the Two-Body Problem in General Relativity, to be held from October 20 to 22, 2025, will bring together a select group of researchers who have played a central role in this history, alongside historians and philosophers of physics. The workshop offers an opportunity not only to revisit landmark developments, but also to reflect on the evolving methods, collaborations, and conceptual challenges that have shaped this remarkable scientific journey.

Hosted by the “Astrophysical and Cosmological Relativity” division at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute) in Potsdam, Germany, the Workshop is part of the Balzan Prize Project. This project investigates the historical and philosophical dimensions of solving the two-body problem in general relativity, with particular emphasis on the development of both analytical and numerical approaches, as well as the synergy—and at times, the dissonance—between these methods. The event will feature twelve talks that are historical, philosophical, and forward-looking in scope, along with three panel discussions centered on key themes:

• Why Did Progress in Analytical Relativity Differ in Europe Compared to the US, and More Generally Among Countries?
• Why Did the Progress in Numerical Relativity Differ in Europe Compared to the US, and More Generally Among Countries?
• Appreciation, Competition, and Synergism Between Analytical and Numerical Relativity Approaches

Contributions from experimentalists are also included, highlighting how theoretical modeling has both informed and responded to observational work.

The workshop is by invitation only. Each talk will be complemented by ample time for discussion, encouraging open and engaging exchanges across disciplinary boundaries.

Scientific organizing committee
Alexander Blum, Alessandra Buonanno, Félix-Louis Julié, Dennis Lehmkuhl, Jean-Philippe Martinez, Harald Pfeiffer, Christian Röken, and Jan Steinhoff.

Local organizing committee
Alessandra Buonanno, Félix-Louis Julié, Jean-Philippe Martinez, Harald Pfeiffer, and Jan Steinhoff.

Illustration and design
Ana Carvalho

Web development
Marco Gajardo

Administrative support
Brit Holland, Elke Müller

Workshop Website

@FlipPhysics, May 26-29 2026 at Universidad de Valencia

The 3rd edition of the @FlipPhysics workshop seeks to bring together the community of physicist working in the areas of Nuclear, Particle Physics and its Applications, especially women, and also (under)-graduate, PhD students, and young researchers, who have the opportunity to be introduced to several scientific topics through (mostly) women who have been successful in the field.

Some of the topics that will be covered are:

  • Nuclear and Particle Physics, and some of their applications (medical physics, quantum computing)Machine Learning applied to Physics
  • Dark Matter
  • Gravitational waves
  • Astroparticle Physics
  • Cosmology

And there will be also these activities:

  • Sessions on Gender Equality with experts
  • Sessions on research plan writing and public speaking
  • Virtual tours on experimental facilities

You are welcome to participate and send your abstract. See the call for abstracts.

Workshop Website

Quantum100 ⊗ AI Workshop, November 12-14 2025, Münster

The centennial year of the discovery of quantum mechanics is the best occasion to foresee the future of physics. Eventually this opportunity overlaps with the revolutionary development of AI, and without AI we cannot talk about the future. Here we hold a research workshop “Quantum100 ⊗ AI” in which physicists using AI or trying to unify AI with physics gather, to discuss the future of physics. The workshop consists of plenary invited talks in various physics fields centered in high energy theory, together with a poster session, and a panel discussion for the discussion of the future. 

The centennial year of the discovery of quantum mechanics is the best occasion to foresee the future of physics. Eventually this opportunity overlaps with the revolutionary development of AI, and without AI we cannot talk about the future. Here we hold a research workshop “Quantum100 ⊗ AI” in which physicists using AI or trying to unify AI with physics gather, to discuss the future of physics. The workshop consists of plenary invited talks in various physics fields centered in high energy theory, together with a poster session, and a panel discussion for the discussion of the future.

Connected Events

The workshop is followed by the Quantum 100 ceremony, to form a unique atmosphere to discuss the future of physics.

All the registered participants of this “Quantum100 x AI” workshop are cordially invited, with free of charge, to the following conjunct precious events.

  • Quantum Festival “Quantum100” (with symphonic orchestra). Final event of the quantum year https://quantum100.de/en/
    15.Nov.2025 (exhibition/public lectures start at 13:00, Musical concert: 19:30).
    Location: Halle Münsterland https://quantum100.de/en/arrival/
    – Enjoy the beautiful orchestration of symphony and choir, whose motif is quantum physics, to celebrate the century of quantum physics!
    International Closing Concert: https://quantum100.de/en/concert/
    – Chips: In the exhibition, one lecture on science diplomacy (16:00-) will be in English, by Götz Neuneck https://quantum100.de/en/
  • Reception with the Major of the City together with DPG president Klaus Richter and JPS president Seiji Miyashita.
    14.Nov.2025 16:00-
    Location: Rathaus (City Hall), Prinzipalmarkt 10, 48143 Münster, https://en.wikipedia.org/wiki/Historical_City_Hall_of_M%C3%BCnster
    – Find out our future of physics, through the joint activity of German physical society and Japan physical society!
  • International panel discussion “Role and responsibility of scientists in times of disruptive global challenges”.
    14.Nov.2025 17:30-
    Location: Erbdrostenhof, Salzstraße 38, 48143 Münster (https://www.erbdrostenhof.lwl.org/de/)
    – We strongly encourage everyone to participate in this physicist discussion, for our future of physics.

List of plenary speakers

  • Keisuke Fujii (University of Osaka)
  • Yang-Hui He (LIMS)
  • Yuji Hirono (Tsukuba University)
  • Gregor Kasieczka (University of Hamburg)
  • Keun-Yong Kim (GIST)
  • Sven Krippendorf (Cambridge University)
  • Yuki Nagai (University of Tokyo)
  • Mihoko Nojiri (KEK)
  • Tilman Plehn (University of Heidelberg)
  • Germán Rodrigo (CSIC-Valencia University)
  • Fabian Ruehle (Northeastern University)
  • Rak-Kyeong Seong (UNIST)
  • Steffen Schumann (University of Göttingen)
  • Gary Shiu (University of Wisconsin)
  • Michael Spannowsky (Durham University)
  • Akio Tomiya (Tokyo Woman’s Christian University)

Oral presentations are invited only but we welcome poster presentations. If you would like to present a poster, please submit an abstract.

Workshop Website

JGRG 34 – Workshop on General Relativity and Gravitation, January 19-23 2026 at Kyoto University

JGRG is the community of researchers in Japan, working on General relativity and Gravitation. JGRG has hosted an annual workshop series under the same title since 1991. The main purpose of the workshop is to provide a venue for exchanging ideas to pursue future trends of research. The workshop covers a wide range of topics related to general relativity and gravitation.

Date & Venue

January 19 (Mon) – January 23 (Fri), 2026

YITP Panasonic Auditorium and Maskawa Hall in North Campus, Kyoto University, Kyoto

The first day will commence at 11:00, and the closing time will be adjusted according to the number of presentations.

Conference Dinner: Jan. 22(Thu) See below for more details.

Invited Speakers

Emanuele Berti (Johns Hopkins), Antonio De Felice (YITP, Kyoto U.), Roberto Emparan (Barcelona U.), Valeri Frolov (Alberta U.), Ryuichiro Kitano (YITP, Kyoto U.), Antonio Padilla (Nottingham U.), Takahiro S. Yamamoto (RESCEU, U. Tokyo), …

Important dates

  • October 24 (24:00 JST): Deadline for travel support, Visa support
  • November 30 (24:00 JST): Deadline for abstract submission
  • December 15 (24:00 JST): Deadline for registration (without presentation)

Workshop Website

XVIII Black Holes Workshop, December 18-19 2025 in Lisbon

The eighteenth edition of the Black Holes Workshop will be held at the Instituto Superior Técnico, Lisbon, in December 18 and 19, 2025.  The venue will be on campus, at the Anfiteatro Abreu Faro.

About the Workshop

From astrophysics to high-energy physics, from information theory to quantum gravity, black holes have acquired an ever increasing role in fundamental physics, and are now part of the terminology of many important branches of observational, theoretical and mathematical physics.

The Black Holes Workshops gather researchers working on physical and mathematical aspects of black holes, using both classical and quantum approaches, within the frameworks of general relativity, semiclassical and quantum gravity, cosmology, and astrophysics, with the goal of stimulating interaction between these different fields.

The eighteenth edition of the Black Holes Workshop will celebrate the 10 years of the first gravitational-wave detection by the LIGO detectors.

Important dates:

  • Registration opens: September 15, 2025
  • Registration closes: December 5, 2025
  • Abstract submission deadline: November 21, 2025

Researchers working on black holes in all their aspects are kindly invited to participate. A limited number of contributed talks will be selected based on scientific merit. Late submissions will not be considered. Please refer to the registration instructions for further details.

Scientific organising committee:

  • Vitor Cardoso (CENTRA/IST)
  • João Costa (CAMGSD/ISCTE)
  • Carlos Herdeiro (CIDMA/Universidade de Aveiro)
  • José Sande Lemos (CENTRA/IST)
  • Filipe Mena (CAMGSD/IST)
  • José Natário (CAMGSD/IST)
  • Jorge Rocha (CENTRA/ISCTE)

Local organising committee:
Valentin Boyanov, Richard Brito, Enrico Cannizzaro, Kyriakos Destounis, Edgar Gasperin, David Hilditch, Adrien Kuntz, Hannes Rüter, João S. Santos, Rita Sousa

Workshop Website

3rd Bangkok Workshop on Gravity & Cosmology, February 2-6, 2026 at Chulalongkorn University, Thailand

The workshop will cover a broad range of issues in gravity and theoretical aspects of cosmology. Some concrete examples of relevant topics are gravitational instabilities and collapse problems, singularity resolution, canonical approaches to gravity quantization and quantum cosmology, statistics of fluctuations in cosmological spacetimes, primordial black holes, cosmological dynamics of fundamental constants, etc. The talks are expected to be informal and interactive, with a substantial pedagogical component. We strongly encourage blackboard presentations.

Workshop Website

BIFROST – Black hole Insights: navigating the FROntiers of SpaceTime, October 20-22, 2025, Odense

In Norse mythology...the Bifröst is a blazing rainbow bridge that connects Midgård (Earth) and Asgård, the realm of the gods.

In a similar spirit, black holes represent bridges between classical gravity and the uncharted territory of quantum gravity. General relativity well describes the spacetime surrounding black holes, yet understanding their interiors requires quantum gravity.
"Bifrost: Black Hole Insights – navigating the FROntiers of SpaceTime" is a dedicated workshop aimed at gathering leading experts from observational astronomy to theoretical physics. Together, participants will explore novel ideas that will help bridge classical and quantum gravity.

The workshop is jointly organized by organized by the Quantum Field Theory Center (QTC) at the Danish Institute for Advanced Studies, the University of Southern Denmark (SDU), Helsinki University and the Department of Physics “Ettore Pancini” of Federico II University.  

The event will take place on QTC premises at the Danish Institute for Advanced Study, in Odense, Denmark.

You can submit an abstract for a contributed talk in the registration form. The deadline for both registration and abstract submission is the 10th of September.

Invited speakers

  • Ana Alonso-Serrano (Max Planck Institute, Potsdam)

  • Vitor Cardoso (Niels Bohr Institute)*

  • Raúl Carballo Rubio (IAA Granada)
  • Steven Carlip (UC Davis)

  • Salvatore Capozziello (SSM, Federico II U.)

  • Mariafelicia De Laurentis (Federico II U.)

  • Netta Engelhardt (MIT)*

  • Antonia M. Frassino (SISSA)

  • Alexandros A. Kehagias (National Technical University of Athens)

  • Carlos Herdeiro (Aveiro U.)

  • Stefan Hohenegger (Lyon U.)

  • Stefano Liberati (SISSA)

  • Orlando Lunogo (U. of Camerino)

  • Alessia Platania (Niels Bohr Institute)

  • Luciano Rezzolla (Goethe U. Frankfurt IAS)
  • 
Jessica Turner (Durham U.)*

  • Matthias Wihelm (Univesrity of Southern Denmark)                          
  • Giulia Gubitosi (Federico II University)
  • Giacomo Cacciapaglia (Sorbonne University) 
    *to be confirmed

Workshop Website