Z(N) lattice gauge theory in a ladder geometry

Jens Nyhegn*, Chia-Min Chung, Michele Burrello

*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

8 Citationer (Scopus)
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Abstract

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.

OriginalsprogEngelsk
Artikelnummer013133
TidsskriftPhysical Review Research
Vol/bind3
Udgave nummer1
Antal sider28
DOI
StatusUdgivet - 10 feb. 2021

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