Making Neutron Stars a Laboratory for New Physics

9 Jun 2025, 09:30 → 13 Jun 2025, 19:30 Europe/Zurich

4/3-006 - TH Conference Room (CERN)

Andrea Caputo (CERN), Enrico Speranza (CERN), Jacquelyn Noronha-Hostler (University of Illinois Urbana Champaign), Joachim Kopp (CERN), Jorge Jose Leite Noronha (University of Illinois at Urbana-Champaign), Jorge Martin Camalich (Instituto de Astrofísica de Canarias), Miguel Escudero Abenza (CERN)

[credit: European Space Agency: url]

This one-week TH-Institute (June 9-13, 2025) aims to bring together leading experts in nuclear physics, astrophysics, and particle physics to address the key questions surrounding the equation of state (EOS) of neutron star (NS) matter and its impact on multi messenger astronomy and new physics searches.

The EOS of neutron stars is crucial to understanding several astrophysical phenomena, from supernova explosions and neutrino emissions to gravitational wave signals from NS mergers. By examining the EOS and its interplay with standard model (SM) and beyond-standard model (BSM) physics, this event seeks to address questions like: What are the uncertainties in EOS modeling, and how can they be minimized to yield robust predictions? How do different EOSs affect GW signals and NS cooling mechanisms? How much different EOS impact constraints on new motivated particles, such as the QCD axion? What role does QCD EOS play in the formation of primordial black holes, and how can observations of NS mergers constrain new physics?

The TH-Institute will thus cover a range of topics, including:

• Theoretical modeling of the EOS of NS matter and its observational implications
• Neutrino emissions from young and old neutron stars, and their role in SN explosions
• Gravitational wave signals from NS mergers and their sensitivity to the EOS
• New physics searches in astrophysical environments, with a focus on axions, neutrinos, and gravitational waves

 

Registration: We welcome everyone interested in these topics to join us in-person or online. In-person participation will be moderated. Upon in-person registration confirmation we recommend arranging accomodation as soon as possible. The accomodation tab gives further information. Deadline for registration is April 30. 

 

Invited speakers:

Francesca Calore (LAPTh-Annecy)

Marina Cermeño (IFT)

Devarshi Choudhury (U. Amsterdam)

David Curtin (U. Toronto)

Laura Fabbietti (TU Munich)

Tobias Fischer (Wroclaw U.)

Alexander Haber (Southampton U.)

Yves Kini (U. Amsterdam)

Mia Kumamoto (Washington U., Seattle)

Aleksi Kurkela (Stavanger U.)

Alessandro Lella (Bari U.)

Giuseppe Lucente (SLAC)

Elias Most (Caltech)

Ulf-G. Meissner (U. Bonn & IAS Jülich)

Jose Antonio Oller (U. Murcia)

Toby Opferkuch (SISSA)

Jose Pons (U. Alicante)

Constança Providência (Coimbra U.)

Sandra Robles (Fermilab)

Benjamin Safdi (UC, Berkeley)

Andreas Schmitt (Southampton U.)

Stefan Stelzl (EPFL)

Laura Tolos (ICE & Frankfurt U.)

Wolfram Weise (TU Munich)

 

This TH Institute is supported by UNDARK and is funded through the Widening participation and spreading excellence programme (project number 101159929)".

Organisers:
Andrea Caputo
Miguel Escudero
Joachim Kopp
Jorge Martin Camalich
Jorge Noronha
Jacquelyn Noronha-Hostler
Enrico Speranza

 

  

 

Monday 9 June

09:45 → 10:00 Introduction

10:00 → 11:00 Ben Safdi

Speaker: Benjamin Ryan Safdi

11:00 → 11:45 Coffee Break

11:45 → 12:10 Sandra Robles

Speaker: Sandra Robles (Fermilab)

12:10 → 12:35 Dynamics of Muons in Neutron Stars

Speaker: Toby Opferkuch (CERN)

12:35 → 13:00 Stefan Stelzl

Speaker: Stefan Stelzl (EPFL - Ecole Polytechnique Federale Lausanne (CH))

13:00 → 14:30 Lunch Break

14:30 → 15:30 High-energy astrophysics probes of ALPs from SNe

Speaker: Francesca Calore (Unite Reseaux du CNRS (FR))

15:30 → 16:15 Coffee Break

16:15 → 16:40 New probes of supernova axion-like particles in neutrino water Cherenkov detectors

Speaker: Marina Cermeno

16:40 → 17:05 Gravitational waves from core-collapse Supernovae

Speaker: Alessandro Lella

17:30 → 19:10 Welcome Reception

Tuesday 10 June

09:30 → 10:30 Elias Most

Speaker: Elias Roland Most (Goethe University Frankfurt)

10:30 → 11:15 Coffee Break

11:15 → 11:40 Does the QCD axion condense in neutron stars?

Speaker: Mia Kumamoto

11:40 → 12:05 Jose Pons

Speaker: Jose Pons

12:05 → 12:30 Jose Antonio Oller

Speaker: José Antonio Oller (Universidad de Murcia)

12:30 → 14:00 Lunch Break

14:00 → 15:00 Aleksi Kurkela

Speaker: Eero Aleksi Kurkela

15:00 → 15:45 Coffee Break

15:45 → 16:30 Discussion Session

Wednesday 11 June

09:30 → 10:30 Ab initio calculation of neutron and hyperneutron matter

Speaker: Ulf Meissner

10:30 → 11:15 Coffee Break

11:15 → 11:40 Alexander Haber

Speaker: Alexander Haber (Vienna University of Technology)

11:40 → 12:05 Nuclear chiral density wave in neutron stars?

Speaker: Andreas Schmitt (University of Southampton)

12:05 → 12:30 Constança Providência

Speaker: Constanca Providencia (CFisUC, Universidade de Coimbra)

12:30 → 14:00 Lunch Break

14:00 → 15:15 Theory Colloquium: Neutron Stars – Nature’s most extreme laboratory

Speaker: Jacquelyn Noronha-Hostler (University of Illinois Urbana Champaign)

Thursday 12 June

09:30 → 10:30 Hyperon nucleon interaction studies at the LHC and neutron star equation of state

Speaker: Laura Fabbietti (Technische Universität München)

10:30 → 11:15 Coffee Break

11:15 → 11:40 Hyperons in Neutron Star Mergers

Speaker: Laura Tolos

11:40 → 12:05 Devarshi Choudhury

Speaker: Devarshi Choudhury

12:05 → 12:30 Yves Kini

Speaker: Yves Kini

12:30 → 14:00 Lunch Break

14:00 → 15:00 Neutron Star Matter Equation of State: Inferences and Interpretations

Speaker: Wolfram Weise

15:00 → 15:45 Coffee Break

15:45 → 16:30 Discussion Session

Friday 13 June

09:30 → 10:30 Tobias Fischer

Speaker: Tobias Fischer (University of Wroclaw)

10:30 → 11:15 Coffee Break

11:15 → 11:40 Microphysic inputs for BSM in NSs and SNe

Speaker: Giuseppe Lucente (SLAC)

11:40 → 12:05 David Curtin

Speaker: David Richard Curtin (University of Toronto)

12:05 → 12:30 Vishal Parmar

Speaker: Vishal Parmar (INFN Pisa, Italy)