42 citations · 119 across the 26 of their papers we have counts for
9 papers · 1 filter
Exact mean-field solution of a spin chain with short-range and long-range interactions
Etienne Granet
We consider the transverse field Ising model with additional all-to-all interactions between the spins. We show that a mean-field treatment of this model becomes exact in the therm…
Out-of-equilibrium dynamics of the XY spin chain from form factor expansion
Etienne Granet, Henrik Dreyer, Fabian H. L. Essler
We consider the XY spin chain with arbitrary time-dependent magnetic field and anisotropy. We argue that a certain subclass of Gaussian states, called Coherent Ensemble (CE) follow…
Systematic strong coupling expansion for out-of-equilibrium dynamics in the Lieb-Liniger model
Etienne Granet, Fabian H. L. Essler
We consider the time evolution of local observables after an interaction quench in the repulsive Lieb-Liniger model. The system is initialized in the ground state for vanishing int…
Stroboscopic exclusion process: a first-moment-driven dynamics
Bryan Debin, Etienne Granet
We define a new variant of exclusion processes in discrete time that has jump probabilities that depend on the last jump performed. In a particular limit for the jump probabilities…
A systematic -expansion of form factor sums for dynamical correlations in the Lieb-Liniger model
Etienne Granet, Fabian H. L. Essler
We introduce a framework for calculating dynamical correlations in the Lieb-Liniger model in arbitrary energy eigenstates and for all space and time, that combines a Lehmann repres…
Finite temperature and quench dynamics in the Transverse Field Ising Model from form factor expansions
Etienne Granet, Maurizio Fagotti, Fabian H. L. Essler
We consider the problems of calculating the dynamical order parameter two-point function at finite temperatures and the one-point function after a quantum quench in the transverse…