16 citations · 57 across the 13 of their papers we have counts for
13 papers
Prethermalization in Fermi-Pasta-Ulam-Tsingou chains
Gabriel M. Lando, Sergej Flach
The observation of the Fermi-Pasta-Ulam-Tsingou (FPUT) paradox, namely the lack of equipartition in the evolution of a normal mode in a nonlinear chain on unexpectedly long times,…
Observation of prethermalization in weakly nonintegrable unitary maps
Xiaodong Zhang, Gabriel M. Lando, Barbara Dietz +1
We investigate prethermalization by studying the statistical properties of the time-dependent largest Lyapunov exponent for unitary-circuit maps upon approaching integrabili…
Quantum Enhancement of Thermalization
Yulong Qiao, Frank Großmann, Peter Schlagheck +1
Equilibrium properties of many-body systems with a large number of degrees of freedom are generally expected to be described by statistical mechanics. Such expectations are closely…
Thermalization Universality-Class Transition Induced by Anderson Localization
Weihua Zhang, Gabriel M. Lando, Barbara Dietz +1
We study the disorder-induced crossover between the two recently discovered thermalization slowing-down universality classes -- characterized by long- and short-range coupling -- i…
Computing Quantum Mean Values in the Deep Chaotic Regime
Gabriel M. Lando, Olivier Giraud, Denis Ullmo
We study the time evolution of mean values of quantum operators in a regime plagued by two difficulties: The smallness of and the presence of strong and ubiquitous classica…
Thermalization slowing down in multidimensional Josephson junction networks
Gabriel M. Lando, Sergej Flach
We characterize thermalization slowing-down of Josephson junction networks in 1, 2 and 3 spatial dimensions for systems with hundreds of sites by computing their entire Lyapunov sp…
Resurgent revivals in bosonic quantum gases: a striking signature of many-body quantum interferences
Peter Schlagheck, Denis Ullmo, Gabriel M. Lando +1
Matter wave revivals depend on a delicate interplay of constructive many-body quantum interferences in the developing dynamics of an ultracold bosonic system in an optical lattice.…
The role of tunneling in the ionization of atoms by ultrashort and intense laser pulses
Gabriel M. Lando
Classically allowed transport is shown to compete with quantum tunneling during the ionization of atoms by ultrashort and intense laser pulses, despite Keldysh parameters smaller t…
Complexified phase spaces, initial value representations, and the accuracy of semiclassical propagation
Gabriel M. Lando
Using phase-space complexification, an Initial Value Representation (IVR) for the semiclassical propagator in position space is obtained as a composition of inverse Segal-Bargmann…
Distinguishing quantum features in classical propagation
Kelvin Titimbo, Gabriel M. Lando, Alfredo M. Ozorio de Almeida
The strictly classical propagation of an initial Wigner function, referred to as TWA or LSC-IVR, is considered to provide approximate averages, despite not being a true Wigner func…
Quantum-Chaotic Evolution Reproduced from Effective Integrable Trajectories
Gabriel M. Lando, Alfredo M. Ozorio de Almeida
Classically integrable approximants are here constructed for a family of predominantly chaotic periodic systems by means of the Baker-Hausdorff-Campbell formula. We compare the evo…
Semiclassical evolution in phase space for a softly chaotic system
Gabriel M. Lando, Alfredo M. Ozorio de Almeida
An initial coherent state is propagated exactly by a kicked quantum Hamiltonian and its associated classical stroboscopic map. The classical trajectories within the initial state a…
Quantum revival patterns from classical phase-space trajectories
Gabriel M. Lando, Raúl O. Vallejos, Gert-Ludwig Ingold +1
A general semiclassical method in phase space based on the final value representation of the Wigner function is considered that bypasses caustics and the need to root-search for cl…