We study quasiparticle dynamics in a quasiperiodic Ising model with temporally fluctuating transverse fields. Specifically, we calculate the dynamical exponents of standard deviation spreading under field chosen randomly from binary values $\ifmmode\pm\else\textpm\fi{}h$ at every time interval. find that short-time behavior depends on interval also reveal how affects relaxation spin-spin correl...

A spinless Bose-Hubbard model in a one-dimensional (1D) double-chain tilted lattice is numerically studied at unit filling per cell. When each atom localized two-site cell, the low-energy effective gives rise to an exact textbook of 1D transverse Ising via superexchange interaction. To validate model, we calculate energy spectrum and nearest-neighbor correlation functions states subspace which ...

A probability density characterization of multipartite entanglement is tested on the one-dimensional quantum Ising model in a transverse field. The average and second moment of the probability distribution are numerically shown to be good indicators of the quantum phase transition. We comment on multipartite entanglement generation at a quantum phase transition.

A Fermi-type Green’s function is used to study pyroelectric properties of the thin filmwith finite sizes in three dimensions based on a modified transverse Ising model. The results demonstrate that a decrease in the lateral size of the film has a disadvantageous influence on the pyroelectric coefficient of the thin film. & 2009 Elsevier B.V. All rights reserved.

The calculation of ground-state energies of physical systems can be formalised as the k-local Hamiltonian problem, which is a natural quantum analogue of classical constraint satisfaction problems. One way of making the problem more physically meaningful is to restrict the Hamiltonian in question by picking its terms from a fixed set S, and scaling them by arbitrary weights. Examples of such sp...