Abstract

This workshop aims at catalyzing the joint efforts of particle physicists and cosmologists towards the exploration of new physics with large cosmological datasets. The workshop is structured to encompass three thematic weeks dedicated to model building and testing fundamental physics in cosmology, developing novel theoretical tools to search for new physics in cosmological observables, and discussing the potential of next generation experiments to probe the plethora of new physics signals.

Format: The long-term GGI workshops have format similar to those at the Aspen Center for Physics or the Munich Institute for Astro- and Particle Physics (MIAPP). Most of the weeks have a relaxed schedule with just one to two talks per day and plenty of time for discussions and collaboration in the stimulating setting of the GGI Institute. The program is very loosely structured around topical weeks, but the participants are encouraged to stay for multiple weeks and interact with experts in different fields.

Application: In order to submit your application, please click the Apply button above and fill in the registration form. The minimum length of stay is one week, but we strongly encourage participants to stay for several weeks. Application deadline is May 31, 2025.

Accommodation: All selected participants will be able to book accommodation through GGI, in order to get the best possible prices in the local hotels. For a limited number of participants GGI will be able to cover local expenses. Please indicate in your application if you need such support.

Topics

Week 1 (25 Aug - 29 Aug): Advanced School on Precision Cosmology and Dark Matter
The school for PhD students and postdoctoral researchers interested in using cosmological observables to unravel the nature of dark matter.

Week 2 (01 Sep - 05 Sep): Models of new physics vs cosmological probes
What kind of new physics can be discovered by upcoming cosmological probes? Ideas about early and late universe modifications of the standard cosmological model. Model building for the dark sector and cosmological implications.

Week 3 (08 Sep - 12 Sep): New theoretical tools to model the late universe and search for new physics
How can we improve our predictions and analyses for models beyond LCDM? Progress in perturbation theory and simulations. Application of machine learning. Analyses beyond 2-point statistics. New observables.

Week 4 (15 Sep - 19 Sep): Focus week
The focus week is dedicated to initiating a much-needed community white paper, summarizing new and well-motivated particle physics models that can be tested in cosmology in light of upcoming data and planned future experiments.

Week 5 (22 Sep - 26 Sep): New physics in early and late universe and possible impact on design of the next generation of experiments
What are the generic signatures of new physics from inflation to late universe and how to optimally look for them? Large classes of new models and their features. Optimization of future galaxy survey and CMB experiments to search for new physics.

Week 6 (29 Sep - 03 Oct): Symposium


Organizers
Emanuele Castorina (University of Milan)
Azadeh Moradinezhad (LAPTH, Annecy)
Diego Redigolo (INFN, Florence)
Ennio Salvioni (University of Sussex)
Marko Simonović (University of Florence)
Anže Slosar (Brookhaven National Laboratory)
Tomer Volansky (Tel Aviv University)

Local organizer
Diego Redigolo
Marko Simonovic

Contact
diego.redigolo@fi.infn.it
marko.simonovic@unifi.it

Related events
Advanced School on Precision Cosmology and Dark Matter (Training Week) - Aug 25, 2025

New Physics from Galaxy Clustering at GGI (Focus Week) - Sep 15, 2025

New Physics from Galaxy Clustering at GGI (Conference) - Sep 29, 2025






Talks

Date	Speaker	Title	Type	Useful Links
Sep 01, 2025 - 11:30-12:30	Masimo Pietroni	On the field-level likelihood in perturbation theory	Talk					Video
Sep 02, 2025 - 10:00-11:00	Kimberly Boddy	Cosmology with ultralight dark matter	Talk		Slides			Video
Sep 02, 2025 - 11:30-12:30	Lorenzo Ubaldi	Dark photon dark matter	Talk					Video
Sep 03, 2025 - 10:00-11:00	Melissa Joseph	Interacting dark sectors in cosmology	Talk		Slides			Video
Sep 03, 2025 - 11:30-12:30	Mustafa Amin	Early Structure Formation in Warm Wave Dark Matter	Talk		Slides			Video
Sep 04, 2025 - 14:30-16:00	Francesco Verdiani	Late-universe dynamics in mixed dark matter scenarios	Discussion		Slides
Sep 05, 2025 - 10:00-11:00	Zach Weiner	Neutrino masses and dark forces	Talk		Slides			Video
Sep 08, 2025 - 11:30-12:30	Fabian Schmidt	New physics and new inference in galaxy clustering	Talk		Slides			Video
Sep 09, 2025 - 10:00-11:00	Jiamin Hou	Parity violation on cosmological scales	Talk		Slides			Video
Sep 09, 2025 - 11:30-12:30	Olivier Simon	Cosmic relics in theories with scalar fifth forces	Talk					Video
Sep 10, 2025 - 10:00-11:00	Matthew Lewandowski	Renormalization and efficient evaluation of the dark-matter two-loop power spectrum	Talk		Slides			Video
Sep 10, 2025 - 11:30-12:30	Michael Geller	Late-time phase transitions	Talk					Video
Sep 11, 2025 - 10:00-11:00	Satya Gontcho A Gontcho	DESI shakes up the dark Universe	Talk		Slides			Video
Sep 11, 2025 - 14:30-15:30	Davide Bianchi	Challenges for spectroscopic galaxy surveys	Discussion
Sep 12, 2025 - 10:00-11:00	Pierre Zhang	On prior measures in posterior marginals	Talk
Sep 15, 2025 - 11:30-12:30	Raphael Bousso	Why it’s a cosmological constant?	Talk
Sep 16, 2025 - 10:00-11:00	David Alonso	Cosmology from projected clustering: two- and three-point statistics	Talk		Slides
Sep 16, 2025 - 11:30-12:30	Mikhail Ivanov	Un-detecting dynamical dark energy in DESI's data	Talk		Slides
Sep 16, 2025 - 14:30-15:30	David Alonso	Tensions in cosmological datasets	Discussion		Slides
Sep 17, 2025 - 10:00-11:00	Luigi Guzzo	Mapping large-scale structure with Euclid	Talk
Sep 18, 2025 - 10:00-11:00	Stephen Chen	Peculiar velocity	Talk
Sep 18, 2025 - 11:30-12:30	Uroš Seljak	What can AI do for LSS/cosmology?	Discussion
Sep 19, 2025 - 10:00-11:00	Mathias Garny	From new methods for matter clustering to new dark sector physics	Talk
Sep 22, 2025 - 11:30-12:30	Noah Sailer	Title	Talk
Sep 23, 2025 - 10:00-11:00	Beatriz Tucci	Title	Talk
Sep 23, 2025 - 11:30-12:30	Thomas Bakx	Title	Talk
Sep 24, 2025 - 11:30-12:30	Mehrdad Mirbabayi	Title	Talk
Sep 26, 2025 - 11:30-12:30	Blake Sherwin	Title	Talk