Quantum dynamics of topological strings in a frustrated Ising antiferromagnet

Abstract We investigate the quantum dynamics of antiferromagnetic transverse field Ising model on triangular lattice through large-scale Monte Carlo simulations and stochastic analytic continuation. This effectively describes a series rare-earth compounds, for example, TmMgGaO 4 . At weak field, we capture excitations related to topological strings, which exhibit continuum features described by XY chain along strings those in accord with ‘Luttinger string liquid’ perpendicular direction. The can be well understood from perspective strings. Furthermore, identify contribution excitation spectrum. Our study provides characteristic experimental search string-related proposes theoretical method pinpoint spectra.