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cond-mat.stat-mech2025
A mean-field theory of effective normal modes in the Fermi-Pasta-Ulam-Tsingou model
Antonio Ponno, Giacomo Gradenigo, Marco Baldovin +1
We present a non-perturbative, mean-field theory for the Fermi-Pasta-Ulam-Tsingou model with quartic interaction, capturing the quasiperiodic features shown by the system at all en…
cond-mat.stat-mech2025
Spin-Waves without Spin-Waves: A Case for Soliton Propagation in Starling Flocks
Andrea Cavagna, Guido Cimino, Javier Cristín +10
Collective turns in starling flocks propagate linearly with negligible attenuation, indicating the existence of an underdamped sector in the dispersion relation. Beside granting li…
cond-mat.stat-mech2017★ 8 cited
Chopping time of the FPU -model
Andrea Carati, Antonio Ponno
We study, both numerically and analytically, the time needed to observe the breaking of an FPU -chain in two or more pieces, starting from an unbroken configuration at a given t…