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Upcoming events in Mathematics

(previous see here)
Mon 26/03/18 15:00
Fulton G20
Mathematics Seminar
Prof. Miguel Onorato (Universit√† di Torino)
New developments in the old Femi-Pasta-Ulam-Tsingou problem


In the early fifties E. Fermi in collaboration with J. Pasta, S. Ulam and M. Tsingou studied numerically a one-dimensional chain of equal masses connected by a weakly nonlinear spring. One of their goals was to establish the time scale needed for the system to reach a thermalized state. However, instead of thermalization, they observed numerically a recurrence to the initial condition (this is known as the FPUT-recurrence). This unexpected result has lead to the development of the modern nonlinear physics (discovery of solitons, integrability etc).

After an historical introduction, I will discuss new developments based on the so-called Wave Turbulence theory that allows one to estimate accurately the relaxation time scale in one dimensional chains.


Mon 07/05/18 14:00
Fulton G20
Mathematics Seminar
Dr. Carlo Mercuri (University of Swansea)
(Themes: Partial Differential Equations)