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Liouvillian gap and single spin-flip dynamics in the dissipative Fermi-Hubbard model
Hironobu Yoshida, Hosho Katsura
Motivated by recent progress in cold-atom experiments, we analyze the SU() Fermi-Hubbard model on a -dimensional hypercubic lattice with two-body loss. By focusing on states…
Quantum many-body scars of spinless fermions with density-assisted hopping in higher dimensions
Kensuke Tamura, Hosho Katsura
We introduce a class of spinless fermion models that exhibit quantum many-body scars (QMBS) originating from kinetic constraints in the form of density-assisted hopping. The models…
Exact eigenstates of multicomponent Hubbard models: SU() magnetic pairing, weak ergodicity breaking, and partial integrability
Masaya Nakagawa, Hosho Katsura, Masahito Ueda
We construct exact eigenstates of multicomponent Hubbard models in arbitrary dimensions by generalizing the -pairing mechanism. Our models include the SU() Hubbard model as a…
Spontaneously broken supersymmetric fracton phases with fermionic subsystem symmetries
Hosho Katsura, Yu Nakayama
We construct a purely fermionic system with spontaneously broken supersymmetry that shares the common feature with a fracton phase of matter. Our model is gapless due to the Nambu-…
Duality, Criticality, Anomaly, and Topology in Quantum Spin-1 Chains
Hong Yang, Linhao Li, Kouichi Okunishi +1
In quantum spin-1 chains, there is a nonlocal unitary transformation known as the Kennedy-Tasaki transformation , which defines a duality between the Haldane phase a…