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- W3127401322 abstract "In this work, based on the Fredkin spin chain, we introduce a family of spin-$1/2$ many-body Hamiltonians with a three-site interaction featuring a fragmented Hilbert space with coexisting quantum many-body scars. The fragmentation results from an emergent kinetic constraint resembling the conserved spin configuration in the 1D Fermi-Hubbard model in the infinite onsite repulsion limit. To demonstrate the many-body scars, we construct an exact eigenstate that is in the middle of the spectrum within each fractured sub-sector displaying either logarithmic or area-law entanglement entropy. The interplay between fragmentation and scarring leads to rich tunable non-ergodic dynamics by quenching different initial states that is shown through large scale matrix product state simulations. In addition, we provide a Floquet quantum circuit that displays non-ergodic dynamics as a result of sharing the same fragmentation structure and scarring as the Hamiltonian." @default.
- W3127401322 created "2021-02-15" @default.
- W3127401322 creator A5021126170 @default.
- W3127401322 creator A5025529150 @default.
- W3127401322 date "2021-06-25" @default.
- W3127401322 modified "2023-10-02" @default.
- W3127401322 title "Hilbert space fragmentation and exact scars of generalized Fredkin spin chains" @default.
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- W3127401322 doi "https://doi.org/10.1103/physrevb.103.l220304" @default.
- W3127401322 hasPublicationYear "2021" @default.
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