School on Multineutron Clusters in Nuclei and in Stars

Neutron-rich nuclei at the edge of instability pose significant challenges to experimental investigations and our theoretical understanding of their structure and reactions. Novel experimental tools are being developed to probe multineutron correlations and clustering, where emerging low-energy universal phenomena exposes the limits of current ab initio approaches.  While these approaches have been successful in describing properties of nuclei close to the valley of stability, they may struggle to account for the long-range multinucleon correlations present in exotic neutron-rich nuclei. The study of such systems is also very relevant for neutron stars and astrophysical phenomena.

The one-week joint ICTP-SAIFR/MITP School on Multineutron Clusters in Nuclei and Stars will address topics such as the emergence of multineutron systems, the dynamics of weakly bound systems, few- and many-body ab initio approaches, and their connections to the equation of state of nuclear matter.

• Sonia Bacca (Mainz University, Germany)
• Carlos Bertulani (Texas A&M University, USA)
• Emiko Hiyama (Tohoku University, Japan)
• Tobias Frederico (ITA, Brazil)

List of Participants: Updated on May 19,2025.

 

Announcement:

Application deadline for school: March 21, 2025 (closed)

 

Lecturers

• Francesca Bonaiti (Michigan State University, USA): Extension of the ab-initio approach to heavier nuclei Part 1 – Part 2
• Chen Ji (Central China Normal University, China): Halo nuclei, clustering and universality Part 1 – Part 2 – Part 3 – Exercises
• Takashi Nakamura (Tokyo Institute of Technology, Japan): Experimental probes of multineutron systems
• Ingo Tews (Los Alamos National Laboratory, USA): Ab-initio approach and applications

 

Announcement:

Application deadline for school: March 21, 2025 (closed)

 

 

 The schedule might be changed.

Posters

• Brenda Pinheiro Carneiro – Analysis of 3H – 3He cluster structure in the 6Li +89Y reaction
• Fernanda Sant’Anna Rodrigues De Vasconcelos – Evidence of alpha clusterization in 40Ca
• Marzieh Shekari Tousi – Doubly heavy baryons spectrum in QCD
• Mateus Santos – Nuclear mass predictions via Bayesian Neural Network approach
• Vinícius Bruno Bet Ader – Study of the first excited state of the 4He nucleus in coupled-channel Halo EFT

Short Talks

• Bryan Helz – n-alpha scattering in halo eft
• Cassandra Lee Armstrong – Machine Learning for Uncertainty Quantification in Neutron Matter)
• Geovanna Macedo De Moura – Analysis of correlation between active nuclei of nearby galaxies and ultra-high-energy cosmic rays
• Immo Christopher Reis – Renormalization group analysis of electromagnetic properties of the deuteron
• Live-Palm Kubushishi – Core excitation in halo nuclei using Halo-EFT
• Miriam El Batchy – Photodissociation in neutron‑rich oxygen isotopes
• Pedro Luiz Domingues Magro – Elastic scattering in the 12N + 197Au system at Elab = 70 MeV
• Rafael Mendes Francisco – Two-neutron halo nuclei at unitarity
• Tim Egert – Dipole strength functions and artificial intelligence
• Timothy George Backert – Four-neutron point production via Faddeev-Yakubovsky formalism
• Vittorio Barlucchi – Proton-proton weak capture in ChEFT
• Adamu Issifu – Properties of Quark Matter in Massive Quark Stars

 

2025-05-27

• 09:00 - Chen Ji (Central China Normal University, China): Halo nuclei, clustering and universality - Class 1
• 10:45 - Ingo Tews (Los Alamos National Laboratory, USA): Ab-initio approach and applications - Class 1
• 13:30 - Chen Ji (Central China Normal University, China): Halo nuclei, clustering and universality - Class 2

2025-05-28

• 09:00 - Ingo Tews (Los Alamos National Laboratory, USA): Ab-initio approach and applications - Class 2
• 10:45 - Chen Ji (Central China Normal University, China): Halo nuclei, clustering and universality - Class 3
• 14:00 - Emiko Hiyama (Tohoku Univ./RIKEN): Gaussian Expansion Method and its application to Nuclear physics
  • Abstract

2025-05-29

• 09:00 - Ingo Tews (Los Alamos National Laboratory, USA): Ab-initio approach and applications - Class 3
• 10:45 - Francesca Bonaiti (Michigan State University, USA): Extension of the ab-initio approach to heavier nuclei - Class 1
• 13:30 - Takashi Nakamura (Tokyo Institute of Technology, Japan): Experimental probes of multineutron systems - Class 1

2025-05-30

• 09:00 - Takashi Nakamura (Tokyo Institute of Technology, Japan): Experimental probes of multineutron systems - Class 2
• 10:45 - Francesca Bonaiti (Michigan State University, USA): Extension of the ab-initio approach to heavier nuclei - Class 2
• 13:30 - Takashi Nakamura (Tokyo Institute of Technology, Japan): Experimental probes of multineutron systems - Class 3

 

Attention!Some participants in ICTP-SAIFR activities have received email from fake travel agencies asking for credit card information. All communication with participants will be made by ICTP-SAIFR staff using an e-mail “@ictp-saifr.org”. We will not send any mailings about accommodation that require a credit card number or any sort of deposit. Also, if you are staying at Hotel Intercity the Universe Paulista, please confirm with the Uber/Taxi driver that the hotel is located at Rua Pamplona 83 in Bela Vista (and not in Jardim Etelvina).

BOARDING PASS: All participants, whose travel has been provided or will be reimbursed by ICTP-SAIFR, should bring the boarding pass  upon registration. The return boarding pass (PDF, if online check-in, scan or picture, if physical) should be sent to secretary@ictp-saifr.org by e-mail.

Visa information: Nationals from several countries in Latin America and Europe are exempt from tourist visa. Nationals from Australia, Canada and USA will be required to obtain a tourist e-visa for visits after April 10, 2025.

Accommodation: Participants whose accommodations are provided by ICTP-SAIFR will stay at Hotel Intercity the Universe Paulista. Other hotel recommendations are available here.

Poster presentation: Participants who are presenting a poster MUST BRING A PRINTED BANNER . The banner size should be at most 1 m (width) x 1,5 m (length). We do not accept A4 or A3 paper.