Rabi lattice models with discrete gauge symmetry: Phase diagram and implementation in trapped-ion quantum simulators

Nevado, Pedro and Porras, Diego (2015) Rabi lattice models with discrete gauge symmetry: Phase diagram and implementation in trapped-ion quantum simulators. Physical Review A, 92. 013624. ISSN 1050-2947

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Abstract

We study a spin-boson chain that exhibits a local Z2 symmetry. We investigate the quantum phase diagram of the model by means of perturbation theory, mean-field theory, and the density matrix renormalization group method. Our calculations show the existence of a first-order phase transition in the region where the boson quantum dynamics is slow compared to the spin-spin interactions. Our model can be implemented with trapped-ion quantum simulators, leading to a realization of minimal models showing local gauge invariance and first-order phase transitions.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics
Depositing User: Pedro Nevado Serrano
Date Deposited: 30 Sep 2015 09:37
Last Modified: 07 Mar 2017 04:12
URI: http://sro.sussex.ac.uk/id/eprint/56957

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