Classification and emergence of quantum spin liquids in chiral Rydberg models
Abstract
We investigate the nature of quantum phases arising in chiral interacting Hamiltonians recently realized in Rydberg atom arrays. We classify all possible fermionic chiral spin liquids with U (1 ) global symmetry using parton construction on the honeycomb lattice. The resulting classification includes six distinct classes of gapped quantum spin liquids: the corresponding variational wavefunctions obtained from two of these classes accurately describe the Rydberg manybody ground state at 1 /2 and 1 /4 particle density. Complementing this analysis with tensor network simulations, we conclude that both particle filling sectors host a spin liquid with the same topological order of a ν =1 /2 fractional quantum Hall effect. At density 1 /2 , our results clarify the phase diagram of the model, while at density 1 /4 , they provide an explicit construction of the groundstate wavefunction with almost unit overlap with the microscopic one. These findings pave the way to the use of parton wavefunctions to guide the discovery of quantum spin liquids in chiral Rydberg models.
 Publication:

Physical Review B
 Pub Date:
 August 2023
 DOI:
 10.1103/PhysRevB.108.075118
 arXiv:
 arXiv:2303.12829
 Bibcode:
 2023PhRvB.108g5118T
 Keywords:

 Condensed Matter  Strongly Correlated Electrons;
 Condensed Matter  Quantum Gases;
 Condensed Matter  Statistical Mechanics;
 Physics  Atomic Physics;
 Quantum Physics
 EPrint:
 13 pages, 14 figures