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- Centro Brasileiro de Pesquisas FísicasBR36 papers
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18 papers · 1 filter
Parametrically driven nonlinear Dirac equation with arbitrary nonlinearity
Fred Cooper, Avinash Khare, Niurka R. Quintero +3
The damped and parametrically driven nonlinear Dirac equation with arbitrary nonlinearity parameter is analyzed, when the external force is periodic in space and given by $f(x)…
Kinetic Ising Models with Self-interaction: Sequential and Parallel Updating
Vahini Reddy Nareddy, Jonathan Machta
Kinetic Ising models on the square lattice with both nearest-neighbor interactions and self-interaction are studied for the cases of random sequential updating and parallel updatin…
Möbius transforms, cycles and q-triplets in statistical mechanics
Jean-Pierre Gazeau, Constantino Tsallis
In the realm of Boltzmann-Gibbs (BG) statistical mechanics and its q-generalisation for complex systems, we analyse observed sequences of q-triplets, or q-doublets if one of them i…
Separation of Chaotic Signals by Reservoir Computing
Sanjukta Krishnagopal, Michelle Girvan, Edward Ott +1
We demonstrate the utility of machine learning in the separation of superimposed chaotic signals using a technique called Reservoir Computing. We assume no knowledge of the dynamic…
Composite Molecules and Decoupling in Reaction Diffusion Models
John F. Dawson, Fred Cooper, Bogdan Mihaila
The Gray-Scott model can be thought of as an effective theory at large spatiotemporal scales coming from a more fundamental theory valid at shorter spatiotemporal scales. The more…
Nature vs. Nurture: Dynamical Evolution in Disordered Ising Ferromagnets
Lily Z. Wang, Reza Gheissari, Charles M. Newman +1
We study the predictability of zero-temperature Glauber dynamics in various models of disordered ferromagnets. This is analyzed using two independent dynamical realizations with th…