Robustness of a Perturbed Topological Phase

Dusuel S, Kamfor M, Orus R, Schmidt KP, Vidal J (2011)

Publication Status: Published

Publication Type: Journal article

Publication year: 2011

Journal

Physical Review Letters American Physical Society

Publisher: AMER PHYSICAL SOC

Book Volume: 106

Journal Issue: 10

DOI: 10.1103/PhysRevLett.106.107203

Abstract

We investigate the stability of the topological phase of the toric code model in the presence of a uniform magnetic field by means of variational and high-order series expansion approaches. We find that when this perturbation is strong enough, the system undergoes a topological phase transition whose first-or second-order nature depends on the field orientation. When this transition is of second order, it is in the Ising universality class except for a special line on which the critical exponent driving the closure of the gap varies continuously, unveiling a new topological universality class.

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) University of Queensland AU Australia (AU) Technische Universität Dortmund DE Germany (DE) Lycée Saint-Louis FR France (FR)

How to cite

APA:

Dusuel, S., Kamfor, M., Orus, R., Schmidt, K.P., & Vidal, J. (2011). Robustness of a Perturbed Topological Phase. Physical Review Letters, 106(10). https://doi.org/10.1103/PhysRevLett.106.107203

MLA:

Dusuel, Sebastien, et al. "Robustness of a Perturbed Topological Phase." Physical Review Letters 106.10 (2011).

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