Breakdown of a perturbed Z(N) topological phase

Schulz MD, Dusuel S, Orus R, Vidal J, Schmidt KP (2012)

Publication Status: Published

Publication Type: Journal article

Publication year: 2012

Journal

New Journal of Physics Institute of Physics: Open Access Journals / Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft

Publisher: IOP PUBLISHING LTD

Book Volume: 14

DOI: 10.1088/1367-2630/14/2/025005

Abstract

We studied the robustness of a generalized Kitaev's toric code with Z(N) degrees of freedom in the presence of local perturbations. For N = 2, this model reduces to the conventional toric code in a uniform magnetic field. A quantitative analysis was performed for the perturbed Z(3) toric code by applying a combination of high-order series expansions and variational techniques. We found strong evidence for first- and second-order phase transitions between topologically ordered and polarized phases. Most interestingly, our results also indicate the existence of topological multi-critical points in the phase diagram.

Authors with CRIS profile

Kai Phillip Schmidt Professur für Theoretische Physik

Involved external institutions

University of Paris 6 - Pierre et Marie Curie / Université Paris VI Pierre et Marie Curie (UPMC) FR France (FR) Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik DE Germany (DE) Lycée Saint-Louis FR France (FR) Technische Universität Dortmund DE Germany (DE)

How to cite

APA:

Schulz, M.D., Dusuel, S., Orus, R., Vidal, J., & Schmidt, K.P. (2012). Breakdown of a perturbed Z(N) topological phase. New Journal of Physics, 14. https://doi.org/10.1088/1367-2630/14/2/025005

MLA:

Schulz, Marc Daniel, et al. "Breakdown of a perturbed Z(N) topological phase." New Journal of Physics 14 (2012).

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