Zobrazeno 1 - 10
of 5 412
pro vyhledávání: '"Politi P"'
Ensembles of phase-oscillators are known to exhibit a variety of collective regimes. Here, we show that a simple mean-field model involving two heterogenous populations of pulse-coupled oscillators, exhibits, in the strong-coupling limit, a robust ir
Externí odkaz:
http://arxiv.org/abs/2407.08453
Autor:
Iubini, Stefano, Politi, Antonio
The observation of negative-temperature states in the localized phase of the the Discrete Nonlinear Schr\"odinger (DNLS) equation has challenged statistical mechanics for a long time. For isolated systems, they can emerge as stationary extended state
Externí odkaz:
http://arxiv.org/abs/2406.15140
Several systems display an equilibrium condensation transition, where a finite fraction of a conserved quantity is spatially localized. The presence of two conservation laws may induce the emergence of such transition in an out-of-equilibrium setup,
Externí odkaz:
http://arxiv.org/abs/2404.12159
Autor:
Lalli, Roberto, Politi, Paolo
In spring 1949 about 70 physicists from eight countries met in Florence to discuss recent trends in statistical mechanics. This scientific gathering, co-organized by the Commission on Thermodynamics and Statistical Mechanics of the International Unio
Externí odkaz:
http://arxiv.org/abs/2404.12156
Autor:
Casotti, Eva, Poli, Elena, Klaus, Lauritz, Litvinov, Andrea, Ulm, Clemens, Politi, Claudia, Mark, Manfred J., Bland, Thomas, Ferlaino, Francesca
Supersolids are states of matter that spontaneously break two continuous symmetries: translational invariance due to the appearance of a crystal structure and phase invariance due to phase locking of single-particle wave functions, responsible for su
Externí odkaz:
http://arxiv.org/abs/2403.18510
Autor:
Ecker, Sebastian, Fink, Matthias, Scheidl, Thomas, Sohr, Philipp, Ursin, Rupert, Arshad, Muhammad Junaid, Bonato, Cristian, Cilibrizzi, Pasquale, Gali, Adam, Udvarhelyi, Péter, Politi, Alberto, Trojak, Oliver J., Ghezellou, Misagh, Hassan, Jawad Ul, Ivanov, Ivan G., Son, Nguyen Tien, Burkard, Guido, Tissot, Benedikt, Hendriks, Joop, Gilardoni, Carmem M., van der Wal, Caspar H., David, Christian, Astner, Thomas, Koller, Philipp, Trupke, Michael
Quantum communication promises unprecedented communication capabilities enabled by the transmission of quantum states of light. However, current implementations face severe limitations in communication distance due to photon loss. Silicon carbide (Si
Externí odkaz:
http://arxiv.org/abs/2403.03284
Autor:
Politi, Antonio, Torcini, Alessandro
Dynamical balance of excitation and inhibition is usually invoked to explain the irregular low firing activity observed in the cortex. We propose a robust nonlinear balancing mechanism for a random network of spiking neurons, which works also in abse
Externí odkaz:
http://arxiv.org/abs/2401.12559
Autor:
Giacomelli, Giovanni, Politi, Antonio
The dynamics of a resonant, free-running ring laser, in the common case of a fast relaxation of the atomic polarization, is unexpectedly highly singular. As shown in [Phys. Rev. Research, {\bf 5}, 023059 (2023)], this is due to the closeness to a pur
Externí odkaz:
http://arxiv.org/abs/2311.14504
Publikováno v:
New J. Phys. 25 063020 (2023)
We study nonequilibrium steady states of a one-dimensional stochastic model, originally introduced as an approximation of the Discrete Nonlinear Schr\"odinger equation. This model is characterized by two conserved quantities, namely mass and energy;
Externí odkaz:
http://arxiv.org/abs/2303.14140
Publikováno v:
Phys. Rev. E 108, 044150, Published 31 October 2023
We study in detail a one-dimensional lattice model of a continuum, conserved field (mass) that is transferred deterministically between neighbouring random sites. The model falls in a wider class of lattice models capturing the joint effect of random
Externí odkaz:
http://arxiv.org/abs/2306.00463