Exploring New Frontiers in Cosmology

Topics

Week 1: Introduction and Training Week (6th-12th July)
The first week of the workshop will serve as an introductory training program dedicated to students and early-career researchers, aimed at preparing interested participants who may not be experts on the topic. The focus will be on key cosmological observables relevant to the workshop, methodologies for data analysis, and statistical techniques for comparing theoretical models with observations. The school will include lectures, hands-on tutorials, and discussions. Topics covered will include:
- Statistical and Numerical methods for cosmology;
- Large-scale structure and Baryon Acoustic Oscillations;
- Supernovae cosmology & the Cosmic distance ladder;
- CMB cosmology and next-generation surveys;
- Theory of dark energy and dark matter;
- Cosmology with Gravitational Waves.

Week 2: Observations and Systematics (13th-19th July)
The second week of the workshop will focus on observations and systematics across different surveys and probes, to assess the impact of unknown systematics on current cosmological tensions. We will also consider novel probes that offer independent measurements and may help identify hidden biases in existing methods. Topics covered will include:
- The Hubble tension;
- The role of systematic effects and their impact on cosmological tensions;
- Discussion on alternative cosmological probes;
- Other tensions in cosmological data;
- Future outlook: new observables, new surveys, new ideas.

Week 3: Conference Week (20th-26th July)
The third week of the workshop will host a conference focused on new frontiers and emerging directions in cosmology, astrophysics, and astroparticle physics, in light of the wealth of data collected over the past decade. Special emphasis will be given to the interplay between these observations and our understanding of fundamental physics. Topics to be addressed during the conference include
- Inflation;
- Dark Matter;
- Dark Energy;
- Extensions to the Standard Model of particles and their implications for cosmology;
- Modified Gravity Theories and their implications for cosmology.

Week 4: Models and Methods (27th-31st July)
This final week of the workshop is designed to synthesize the key outcomes of the previous sessions, with a focus on the observational tensions discussed throughout. We will examine the most compelling alternative theoretical scenarios proposed to simultaneously explain recent measurements, cosmic tensions, and possible hints of new physics. Topics covered during this week include:
- Review of observational evidence for deviations from ?CDM;
- Overview of theoretical alternatives and model comparison techniques;
- Model-independent tests of ?CDM;
- Emerging statistical techniques.

Organizers

Eleonora Di Valentino — School of Mathematical and Physical Sciences, The University of Sheffield

William Giarè — Department of Physics and Astronomy, University of Hawaii

Matteo Martinelli — INAF, Osservatorio Astronomico di Roma

Vivian Poulin — Laboratoire Univers & Particules de Montpellier, CNRS

Elsa M. Teixeira — Laboratoire Univers & Particules de Montpellier, CNRS

Luca Visinelli — Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno,

Local organizers

William Giarè and Elsa M. Teixeira

Contact

giare@hawaii.edu

Website: https://indico.in2p3.fr/event/39253/

Related events

• Exploring New Frontiers in Cosmology (Training Week) - 06 Jul, 2026
• Exploring New Frontiers in Cosmology (Conference) - 20 Jul, 2026

Poster session

The participants who would like to present a poster are kindly invited to send an email with the title and a short abstract to alice.bernamonti@unifuit before May 22, specifying for which week of the workshop. Since a limited number of panels is available, the organizers will select the posters shortly after the deadline.

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Talks

Materials

• Poster