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Description The call for applications is open. Please click on 'Apply here' to submit your application.

An ICTP Meeting

Seventy years after the Fermi-Pasta-Ulam-Tsingou investigations, we revisit its legacy in classical and quantum systems, exploring slow relaxation, ergodicity breaking, and emergent phenomena shaping modern nonlinear and many-body physics.

Seventy years after the pioneering numerical experiment of Fermi, Pasta, Ulam, and Tsingou, the study of slow dynamics in many-body systems continues to inspire fundamental research across physics. The unexpected persistence of non-ergodic behavior in nonlinear oscillator chains opened a path to modern investigations of thermalization, integrability, and chaos. Today, these themes extend well beyond the classical realm, shaping our understanding of quantum quenches, many-body localization, prethermalization, and emergent hydrodynamics. This conference brings together mathematicians and physicists to assess the legacy of the FPUT problem, highlight recent advances, and explore future directions in both classical and quantum dynamics.

Topics:

  • Slow dynamics in many body systems
  • Thermalization, ergodicity, and its breaking in many-body system

Speakers: 

B. Altshuler, Columbia University, USA
C. Arezzo, ICTP, Italy
M. Baldovin, CNR-ISC, Italy
F. Balducci, MPIPKS, Germany
G. Benettin, Università di Padova, Italy
E. Bogomolny, Université Paris-Saclay, France
P. Calabrese, SISSA, Italy
S. Flach, Institute for Basic Science, South Korea
L. Foini, Institut de Physique Théorique, France
M. Gallone, Università di Milano, Italy
M. Giachello, Gran Sasso Science Institute, Italy
S. Lepri, CNR-ISC, Italy
R. Livi, Università di Firenze & INFN, Italy
D. Lucente, Università della Campania, Italy
M. Onorato, Università di Torino, Italy
F. Ricci - Teresenghi, Università La Sapienza, Italy
S. Ruffo, CNR-ISC, Italy
L. Salasnich, Università di Padova, Italy
D. Shepelyansky, Laboratoire de Physique Théorique CNRS, France


Research abstracts: In the application form, all applicants are requested to submit a brief research abstract for a poster presentation and/or contributed talk. A limited number of abstracts will be selected for the poster session or to give a talk. Please use ICTP templates available for download here and below under 'Material'.

Grants: Please note that, unfortunately, no grants or financial support are available to assist with the attendance of selected participants.

Material

Fermi-Pasta-Ulam-Tsingou 70 Years Later: Slow Dynamics in Classical and Quantum Physics | (smr 4178)
Go to day
  • Monday, 10 November 2025
    • 08:30 - 09:00 Registration Formalities 
      REGISTRATION: Upon arrival, Visitors not staying in the ICTP Guest Houses, are kindly requested to complete registration formalities at the Leonardo Building (Lobby). The Registration Desk will be open in the morning starting from 8:30.
    • 09:00 - 21:40
      • 09:00 A mean-field theory of effective normal modes in the Fermi-Pasta-Ulam-Tsingou model 40'
        Speaker: Marco BALDOVIN (CNR-ISC)
        Material: Abstract
      • 09:40 Wave Turbulence approach to the FPUT system 40'
        Speaker: Miguel ONORATO (Università di Torino)
        Material: Abstract
      • 10:20 Coffee Break 40'
      • 11:00 TBA 40'
        Speaker: Laura FOINI (Institut de Physique Théorique, CEA Saclay)
      • 11:40 From weak to strong ergodicity breaking: rethinking the out of equilibrium dynamics in glassy systems 40'
        Speaker: Federico Ricci TERSENGHI (Università La Sapienza)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
      • 14:00 Energy transport in FPUT chains 40'
        Speaker: Roberto LIVI (Università di Firenze & INFN)
        Material: Abstract
      • 14:40 Localization and "classical entanglement'' in the Discrete Non-Linear Schrödinger Equation 40'
        Speaker: Martina GIACHELLO (GSSI)
        Material: Abstract
      • 15:20 Coffee Break 20'
      • 15:40 TBA 40'
        Speaker: Giancarlo BENETTIN (Università di Padova)
      • 16:20 From FPU1955 to Wealth thermalization 40'
        Speaker: DIMA SHEPELYANSKY (Laboratoire de Physique Théorique CNRS)
        Material: Abstract
      • 19:00 Welcome Reception 2h0' 
        All Participants are cordially invited to the Welcome Reception.

Location: Leonardo Building Cafeteria
  • Tuesday, 11 November 2025
    • 09:00 - 16:20
      • 09:00 Thermalization Universality Classes 40'
        Speaker: Sergej FLACH (Institute for Basic Science)
        Material: Abstract
      • 09:40 TBA 40'
        Speaker: Boris ALTSHULER (Columbia University)
      • 10:20 Coffee Break 40'
      • 11:00 Higher orders of perturbation series in classical mechanics 40'
        Speaker: Eugene BOGOMOLNYI (Université Paris-Saclay )
        Material: Abstract
      • 11:40 Quantum Mpemba effect 40'
        Speaker: Pasquale CALABRESE (MPIPKS)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
      • 14:00 TBA 40'
        Speaker: Claudio AREZZO (ICTP)
      • 14:40 Subdiffusive spin transport in disordered classical Heisenberg chains 40'
        Speaker: Federico BALDUCCI (MPIPKS)
        Material: Abstract
      • 15:20 Coffee Break 20'
      • 15:40 Burgers equation and the Fermi-Pasta-Ulam-Tsingou lattice 40'
        Speaker: Stefano RUFFO (CNR-ISC)
        Material: Abstract
  • Wednesday, 12 November 2025
    • 09:00 - 14:00
      • 09:00 Lax dynamics 40'
        Speaker: Stefano LEPRI (CNR-ISC)
        Material: Abstract
      • 09:40 Matter-wave solitons in optical lattices 40'
        Speaker: Luca SALASNICH (Università di Padova)
        Material: Abstract
      • 10:20 Coffee Break 40'
      • 11:00 Thermalization and typicality in integrable systems 40'
        Speaker: Dario LUCENTE (Università della Campania)
        Material: Abstract
      • 11:40 Slow thermalization in FPUT and Quantum Lattice Systems 40'
        Speaker: Matteo GALLONE (Università Milano)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:30 ICTP Colloquium by Angelo VULPIANI 
      The Colloquium will be livestreamed at: ictp.it/livestream
      • 14:00 Noise and Climate Dynamics 2h0' ( Leonardo Building - Budinich Lecture Hall )
        Speaker: Angelo VULPIANI (Università La Sapienza)
      • 16:00 Refreshments 30'
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