Journal
PHYSICAL REVIEW LETTERS
Volume 112, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.201601
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Funding
- EU through SIQS
- ERC Synergy grant UQUAM
- German Research Foundation [SFB/TRR21]
- Austrian Science Fund FWF [SFB FOQUS F4015-N16]
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We show that gauge invariant quantum link models, Abelian and non-Abelian, can be exactly described in terms of tensor networks states. Quantum link models represent an ideal bridge between high-energy and cold atom physics, as they can be used in cold atoms in optical lattices to study lattice gauge theories. In this framework, we characterize the phase diagram of a (1 + 1)D quantum link version of the Schwinger model in an external classical background electric field: the quantum phase transition from a charge and parity ordered phase with nonzero electric flux to a disordered one with a net zero electric flux configuration is described by the Ising universality class.
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