Theory Group Seminars

Physics of the 1D long range Ising model in a transverse field

by Luca Tagliacozzo

Europe/Rome
248 (Building C, First Floor)

248

Building C, First Floor

Description
Long range interacting systems can show different behaviour from their short range version. Recently experiments with trapped ions have started to investigate them. I will charaterize the ground state and low energy excitations of the long range Ising model in a transverse field, the simplest interacting long range model in 1D. In particular I will focus on the complexity of the ground state wave function in terms of entanglement measure and more traditional spin correlations. I will also present some results about the violation of causality when the long range interactions decay slowly enough with the distance. I will also briefly review the experiments with trapped ions that have confirmed our predictions.