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Category: Conferences

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COSMO-26, August 24-28 2026 in Leiden

The 29th International Conference on Particle Physics and Cosmology (COSMO-26) will be hosted by Leiden University. This annual conference series, one of the largest venues for researchers at the intersection of particle physics and cosmology, brings together world experts to discuss the latest advancements in the field.

Topics

  • Gravitational Wave Cosmology
  • CMB
  • Neutrino cosmology
  • LSS and Weak gravitational lensing
  • Tensions/Status of LCDM
  • Primordial Black Holes
  • Cosmological magnetic fields
  • Inflation and primordial universe
  • Dark energy and modified gravity
  • Statistical inference in cosmology
  • Cosmological implications of Quantum Gravity
  • Dark matter

Invited Plenary Speakers

Kevork Abazajian
University of California Irvine

Alexandra Amon
Princeton University

Axel Brandenburg
NORDITA / Stockholm University /
Carnegie Mellon University

Chris van den Broeck
Utrecht University /
Nikhef

Erminia Calabrese
Cardiff University

Chiara Caprini
University of Geneva /
CERN

Jens Chluba
Joddrell Bank /
University of Manchester

Willem Elbers
Durham University

Simon Foreman
Arizona State University

Renata Kallosh
Stanford University

Eiichiro Komatsu
Max Planck Institute for Astrophysics /
Kavli IPMU

Andrii Neronov
Université Paris Cité /
EPFL

Alkistis Pourtsidou
Edinburgh University

Misao Sasaki
University of Tokyo / Kavli IPMU /
APCTP Pohang

Gary Shiu
University of Wisconsin Madison

Joop Schaye
Leiden University

Marko Simonovic
University of Florence

Filippo Vernizzi
IPhT-CEA Saclay

Session conveners

K. Bondarenko
S. Céspedes
P. Cole
W. Coulton
A. Duivenvoorden
C. Garcia Garcia
A. Garoffolo
M. Gervino
D. Glavan
H. Hildebrandt
O. Iarygina
B. Kavanagh
K. Kuijken
A. Malhotra
A. Nicola
M. Ovchynnikov
L. Roszkowski
E. Sellentin
B. Shakya
J. van de Vis
D.-G. Wang

Any inquiries can be sent to: cosmo-26(at)lorentz.leidenuniv.nl

Conference Website

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QUEST 2026, September 23-25 in Pisa

This is the first edition of QUEST: Quantum Gravity, Early Universe, Space-Time and Theoretical Frontiers. This conference will be held in Pisa from 23rd to 25th September 2026 and is entirely organized by PhD students from the University of Pisa who are interested in Gravity, Quantum Field Theories and Cosmology.

With unprecedented precision tests of Einstein’s theory of gravitation and the ΛCDM model of the universe, a better theoretical understanding of fundamental theories is becoming increasingly important, in order to keep up with recent technological advancements. On the other hand, many questions remain open and lead us to look for extensions of these theories, such as the possibility of deviations from Einstein’s relativity and from the Standard Model of Particle Physics and Cosmology.

The aim of this conference is to bring together senior, junior and post-graduate researchers working at the interplay of Gravity and Cosmology, within the broader framework of Quantum Field Theory. Controversial and debated topics in modern theories of gravity, and new techniques in gauge and Generalized Symmetries theories, will be introduced with plenary talks from senior professors, followed by contributions from younger researchers. The final goal is to update participants on recent progress in modified gravity and cosmology, as well as their most recent Quantum Field Theory approaches, and potentially foster new collaborations within the community.

Contributions from participants will be in the form of invited seminars, submitted talks and posters. The deadline for submission of an abstract for a contributed talk or a poster is September 1st, 2026.

No registration fee is required.
Coffee breaks are offered by the organization.

This conference has received financial support from the University of Pisa and INFN, Sezione di Pisa.

Local and Scientific Organizers

Pierre Béchaz, Lorenzo Benfatto, Fabrizio Chicconi, Matteo Orso, Luca Parente, Dario Rossi

Conference Website

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New Horizons in Quantum Gravity, April 11-16 2027 at Ecole de Physique des Houches

Taking place at the prestigious Ecole de Physique des Houches near Mont Blanc, on April 11-16, 2027, this doctoral school is dedicated to young researchers in classical and quantum gravity. It covers advanced topics in general relativity -covariant phase space, boundary symmetries, edge modes- and the recent developments they led to in quantum gravity, including algebra of observables, celestial holography and the blooming interface with quantum reference frames. Leading researchers at the forefront of quantum gravity and quantum information, will teach the fundamentals and discuss the current exciting lines of research.

The school is organized by:

Luca Ciambelli – Perimeter Institute, Canada Flaminia Giacomini – University of Rome Tor Vergata, Italy Etera Livine – ENS Lyon, CNRS, France Natalie Paquette – University of Washington, USA

Confirmed lecturers are Glenn BARNICH, Luca CIAMBELLI, Roberto EMPARAN, Flaminia GIACOMINI, Steve GIDDINGS, Etera LIVINE, Monica PATE, Ana-Maria RACLARIU, Jonathan SORCE.

Registration is now open !

School Website

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Cosmology from Home 2026, September 21st – October 2nd

Cosmology from Home is an annual online cosmology conference with an innovative format, which produces a dynamic and collaborative workshop experience within the online domain. The format includes the use of pre-recorded talks, and a combination of asynchronous and scheduled live discussions. A permanently available and freely-navigated discussion space also facilitates ongoing, organic discussions. The conference will bring together cosmologists from around the world to discuss the current state of cosmology at the interface of theory and observations.

This year, the over-arching conference theme will be “interdisciplinary within cosmology”. Not all talks need to be interdisciplinary, but all talks will be heavily encouraged to be aimed at general cosmology researchers, not subject-level experts.

Conference Website

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LIGO-Virgo-KAGRA Collaboration Meeting September 21 – 25, 2026 at IUCAA, Pune

The September 2026 LIGO–Virgo–KAGRA (LVK) Collaboration Meeting will be held in Pune, India.

Venue: IUCAA, Pune

Date: September 21 – 25, 2026

Registration Fees: There will be a registration fee for this conference. The details of registration fee payment will be updated in due course in the Registration page.

Coordinator:

  • Sanjit Mitra(IUCAA)

Code of conduct:

Meeting participants are expected to follow the LVK Code of Conduct:
https://dcc.ligo.org/LIGO-M1900037

Participants will avoid any inappropriate actions or statements based on individual characteristics such as age, race, ethnicity, sexual orientation, gender identity, gender expression, marital status, nationality, political affiliation, ability status, or educational background. Disruptive or harassing behaviour of any kind will not be tolerated. Harassment includes but is not limited to inappropriate or intimidating behaviour and language, unwelcome jokes or comments, unwanted touching or attention, offensive images, unwelcome photography, and stalking. Disruptive behaviour includes instances of disrespect and lack of civility in interactions with colleagues. All participants are expected at all times to deal with and address their fellow colleagues with respect and courtesy. This includes, but is not limited to, behaviour in in-person meetings, virtual (remote) meetings and email communications.

For any queries: Please write email to – lvk.pune(at)iucaa.in

Meeting Website

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ACME workshop: The Transient Universe in the Rubin Era, November 2-6 2026, Orsay

The ACME workshop, The Transient Universe in the Rubin Era, which will take place 2–6 November 2026 at Institut Pascal, Paris-Saclay University, Orsay, France.

Please note that the abstract submission deadline is 31 July 2026.

The workshop will focus on upcoming observations by the Rubin Observatory and their connection to the multi-wavelength and multi-messenger Universe. In this context, several observatories will be presented, and both current results and future prospects for observing a wide variety of transient sources will be discussed. The workshop will also feature presentations on tools and infrastructure that facilitate coordinated observations of the transient sky.

Important dates

  • Abstract submission deadline: 31 July 2026
  • Registration deadline: 1 October 2026
  • Workshop dates: 2–6 November 2026

There is no registration fee.

For additional information, the scientific program, and registration, please visit the workshop website.

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Gravi-Gamma-Nu Workshop, September 30 – October 2 2026 in Milano

Sixth edition of the Gravi-Gamma-Nu workshop, scheduled for September 30 to October 2, 2026, at Milano Bicocca University in the Lombardy region of Italy.

This year’s workshop will be dedicated to covering the latest observational results from the new all sky surveys in the multimessenger context. The format of the workshop consists of invited and contributed talks.

Please note that registration is now open and will remain available until September 15, 2026: https://agenda.infn.it/event/50733/registrations/5769/

The workshop is limited to 100 participants, and there is no registration fee, so we encourage you to secure your spot as soon as possible. As in the past editions this workshop is a unique opportunity for PhD and early career researchers to connect with leading experts in the field.

For further information, including a list of confirmed invited speakers, please visit our website.

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Universe Unravelled: Cosmic Strings at 50, September 1-5, 2026 in Cambridge

In a seminal paper in 1976, Tom Kibble first proposed the notion of cosmic strings, and a rich legacy of research in the field has followed over the past fifty years. A central goal of this Universe Unravelled workshop will be to revisit unresolved questions about cosmic strings that underpin predictions for cosmological observables, ranging from gravitational wave signals to axion masses. The workshop is intended to prioritise discussion with ample time to develop collaborative directions that could advance these outstanding challenges. The workshop is intended to prioritise discussion with ample time to develop collaborative directions that could advance these outstanding challenges.

In broad outline, the programme will include the following topics:

  • Retrospective perspectives on cosmic strings: their legacy, observational signatures, and future prospects.
  • Cosmic strings dynamics and scaling network evolution: Nambu-Goto and field theory simulations, and their correspondence with analytic modelling, including loops and radiative backreaction.
  • Quantifying cosmic string observables: gravitational waves, dark-matter axions, the CMB, and other probes.
  • Exploring cosmic string phenomenology: superstring networks, GUT-scale and EW strings, and superconductivity.
  • Connections with other topological defects and recent developments.

Cambridge venue

The conference venue is the Centre for Mathematical Sciences, the award-winning buildings that have housed the Department of Applied Mathematics and Theoretical Physics since 2000. With its excellent facilities and good transport connections to international airports, the CMS has an excellent track record hosting international conferences.

Conference Website

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From Quantum Gravity to Cosmology, September 28 – October 2, 2026 in Kashiwa

This workshop will bring together researchers in quantum gravity and cosmology to discuss major open questions at the interface between the two fields. Although the CDM model has been remarkably successful, increasingly precise cosmological observations have also brought a number of challenges and tensions into sharper focus. At the same time, substantial progress in quantum gravity, particularly in its applications to cosmology, has opened new possibilities for investigating the quantum origin of the universe and for seeking a more fundamental understanding of both the successes and the possible limitations of the standard cosmological model.

Addressing these questions requires closer interaction between communities that often work with different concepts, methods, and perspectives. The workshop will therefore bring together researchers from a broad range of approaches to quantum gravity and cosmology. To make the discussions accessible across these different backgrounds, speakers will be encouraged to begin their talks with a broad introduction before moving on to more specialized results and open problems.

The program will also leave substantial time for discussion, with the aim of encouraging active participation, the exchange of ideas, and sustained scientific interaction. More broadly, the workshop seeks to strengthen connections between the quantum gravity and cosmology communities, foster new collaborations, and contribute to a deeper understanding of the fundamental physics underlying our models of the universe.

Confirmed Invited Speakers

  • Niayesh Afshordi — University of Waterloo; Perimeter Institute for Theoretical Physics
  • Benjamin Bose — University of Edinburgh
  • Suddhasattwa Brahma — Indian Statistical Institute, Kolkata
  • Robert Brandenberger — McGill University
  • Clare Burrage — University of Nottingham
  • Bianca Dittrich — Perimeter Institute for Theoretical Physics
  • Kristina Giesel — Friedrich-Alexander-Universität Erlangen-Nürnberg
  • Lavinia Heisenberg — Heidelberg University
  • Olaf Hohm — Humboldt-Universität zu Berlin
  • Daniele Oriti — Universidad Complutense de Madrid
  • Mairi Sakellariadou — King’s College London
  • Yuko Urakawa — KEK Theory Center
  • Victoria Venken — Kavli IPMU, The University of Tokyo
  • Francesca Vidotto — Institute for the Structure of Matter, Spanish National Research Council (IEM-CSIC)

Participation

Both in-person and remote participation will be possible.

Registration will remain open until 7 September 2026, and existing registrations may be modified until 13 September 2026, including for the purpose of submitting or updating an abstract.

Please note that abstract submissions for contributed talks and posters are open only to participants attending the workshop in person.

Contributed talks and poster session

The scientific program will include a limited number of contributed talks, as well as a poster session. Participants submitting an abstract for an oral presentation may also choose to have it considered for a poster if it is not selected for a talk.

Abstract submissions are open only to participants attending the workshop in person and must be made through the registration form.

Organizers

Scientific Organizing Committee

  • Robert Brandenberger — McGill University
  • Elisa Ferreira — Kavli IPMU
  • Oliver Friedrich — Ludwig-Maximillians-University Munich
  • Luca Marchetti — Kavli IPMU and OIST
  • Daniele Oriti — Universidad Complutense de Madrid
  • Mairi Sakellariadou — King’s College London
  • Thomas Thiemann — Friedrich-Alexander-Universität Erlangen-Nürnberg
  • Jun’ichi Yokoyama — Kavli IPMU

Local Organizing Committee

  • Luca Marchetti (chair)  — Kavli IPMU and OIST
  • Elisa Ferreira — Kavli IPMU
  • Jun’ichi Yokoyama — Kavli IPMU

Workshop Website

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10th Roma International Conference on Astroparticle Physics, September 7-11 2026

RICAP-2026 will be the 10th edition of the RICAP Conference. The acronym stands for Roma International Conference on Astro-Particle physics. The Conference, entirely dedicated to the study of high energy cosmic rays, traditionally has been organized by the INFN Sections and Physics Departments of Roma Universities “La Sapienza”, “Tor Vergata” and “Roma Tre”.

The 10th edition of the Conference will be hosted by the Sapienza University of Roma. The aim of the Conference will be to present and discuss some of the most relevant theoretical and experimental results in the field of high energy cosmic radiations (gamma, neutrinos, charged cosmic rays). Special attention will be paid to the multi-messenger search for high energy cosmic rays sources, including gravitational wave searches. A special session will be dedicated to Dark Matter search and to low energy study of inherent neutrino properties. The Conference will give the opportunity to collect experimental results from presently operating experiments. Experiments in progress and future projects will be discussed, debating on different features and on sensitivities.

Conference Website