Critical behavior of the extended Hubbard model with bond dimerization
(2017)
Spinon confinement in a quasi one dimensional anisotropic Heisenberg magnet
(2017)
Spinon decay in the spin-1/2 Heisenberg chain with weak next nearest neighbour exchange
(2017)
On truncated generalized Gibbs ensembles in the Ising field theory
Journal of Statistical Mechanics: Theory and Experiment IOP Publishing 2017:1 (2017) 013103
Abstract:
We discuss the implementation of two dierent truncated Generalized Gibbs Ensembles (GGE) describing the stationary state after a mass quench process in the Ising Field Theory. One truncated GGE is based on the semi-local charges of the model, the other on regularized versions of its ultra-local charges. We test the efficiency of the two different ensembles by comparing their predictions for the stationary state values of the single-particle Green's function G(x) = ⟨Ψ†(x)Ψ(0)⟩ of the complex fermion field Ψ(x). We find that both truncated GGEs are able to recover G(x), but for a given number of charges the semi-local version performs better.