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quant-ph2004
Phase Structure of the Random-Plaquette Z_2 Gauge Model: Accuracy Threshold for a Toric Quantum Memory
Takuya Ohno, Gaku Arakawa, Ikuo Ichinose +1
We study the phase structure of the random-plaquette Z_2 lattice gauge model in three dimensions. In this model, the "gauge coupling" for each plaquette is a quenched random variab…
quant-ph2003
Z_N Gauge Theories on a Lattice and Quantum Memory
Gaku Arakawa, Ikuo Ichinose
In the present paper we shall study (2+1) dimensional Z_N gauge theories on a lattice. It is shown that the gauge theories have two phases, one is a Higgs phase and the other is a…