Work

Parton mean-field theory of a Rydberg quantum spin liquid induced by density-dependent Peierls phases

Year: 2025

Type: article

Abstract: We derive a parton mean-field Hamiltonian for Rydberg excitations on a honeycomb lattice with nearest and density-dependent, complex next-nearest neighbor hopping. Numerical results obtained from exact diagonalization of small systems have given indications for a ground state that is a chiral spin liquid (CSL) []. Here we provide further evidence for this. Calculating the ground-state wavefunction self-consistently, we show that the mean-field Hamiltonian fulfills the requirements for a CSL ground state, resulting from a projected symmetry group classification and verify the expected twofold topological degeneracy on a torus. Furthermore we find very good overlap with the ground-state wavefunctions obtained by exact diagonalization of the original Hamiltonian.

Source: Physical review. B./Physical review. B

DOI: 10.1103/bh7y-k8x9

Authors: Benno Bock, Simon Ohler, Michael Fleischhauer

Institution: Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau

Language: English

Topic: Advanced Condensed Matter Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Deutsche Forschungsgemeinschaft

Awards: G1313477796, TRR 185: OSCAR Kontrolle atomarer und photonischer Quantenmaterie durch maßgeschneiderte Kopplung an Reservoire, G7613874394