The (2 + 1)-d U(1) quantum link model masquerading as deconfined criticality

D. Banerjee, F. J. Jiang, P. Widmer, U. J. Wiese

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


The (2 + 1)-d U(1) quantum link model is a gauge theory, amenable to quantum simulation, with a spontaneously broken SO(2) symmetry emerging at a quantum phase transition. Its low-energy physics is described by a (2 + 1)-d RP(1) effective field theory, perturbed by an SO(2) breaking operator, which prevents the interpretation of the emergent pseudo-Goldstone boson as a dual photon. At the quantum phase transition, the model mimics some features of deconfined quantum criticality, but remains linearly confining. Deconfinement only sets in at high temperature.

Original languageEnglish
Article numberP12010
JournalJournal of Statistical Mechanics: Theory and Experiment
Issue number12
Publication statusPublished - 2013 Dec


  • quantum Monte Carlo simulations
  • quantum phase transitions (theory)

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Statistics, Probability and Uncertainty


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