Z(N) lattice gauge theory in a ladder geometry
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- PhysRevResearch.3.013133
Final published version, 1.76 MB, PDF document
Under the perspective of realizing analog quantum simulations of lattice gauge theories, ladder geometries offer an intriguing playground, relevant for ultracold atom experiments. Here, we investigate Hamiltonian lattice gauge theories defined in two-leg ladders. We consider a model that includes both gauge boson and Higgs matter degrees of freedom with local Z(N) gauge symmetries. We study its phase diagram based on both an effective low-energy field theory and density matrix renormalization group simulations. For N >= 5, an extended gapless Coulomb phase emerges, which is separated by a Berezinskii-Kosterlitz-Thouless phase transition from the surrounding gapped phase. Besides the traditional confined and Higgs regimes, we also observe a novel quadrupolar region, originated by the ladder geometry.
Original language | English |
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Article number | 013133 |
Journal | Physical Review Research |
Volume | 3 |
Issue number | 1 |
Number of pages | 28 |
DOIs | |
Publication status | Published - 10 Feb 2021 |
- EDGE STATES, PHASE, CONFINEMENT, CRITICALITY, FORMULATION, INVARIANCE
Research areas
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