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Quantum dynamics of topological strings in a frustrated Ising antiferromagnet | | Zheng Zhou
; Chang-Le Liu
; Zheng Yan
; Yan Chen
; Xue-Feng Zhang
; | | Date: |
5 Oct 2020 | | Abstract: | We investigate the quantum dynamics of the transverse field Ising model on
the triangular lattice through large-scale quantum Monte Carlo simulations and
stochastic analytic continuation. At weak transverse field, we capture for the
first time the excitations related to topological quantum strings, which
exhibits continuum features described by XY chain along the strings and those
in accord with "Luttinger string liquid" in the perpendicular direction. The
continuum features can be well understood from the perspective of topological
strings. Furthermore, we identify the contribution of strings from the
excitation spectrum. Our study provides characteristic features for the
experimental search for string-related excitations and proposes a new
theoretical method to pinpoint topological excitations in the experimental
spectra. | | Source: | arXiv, 2010.01750 | | Services: | Forum | Review | PDF | Favorites | |
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