528 citations · 3.6k across the 57 of their papers we have counts for
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Deformed Fredkin Spin Chain with Extensive Entanglement
Olof Salberger, Takuma Udagawa, Zhao Zhang +3
We introduce a new spin chain which is a deformation of the Fredkin spin chain and has a phase transition between bounded and extensive entanglement entropy scaling. In this chain,…
Auxiliary fermion approach to the RIXS spectrum in a doped cuprate
Yifei Shi, Andrew James, Eugene Demler +1
We describe a method for calculating the resonant inelastic X-ray scattering (RIXS) response---including the dynamics of the transient core hole---of many-body systems with non-tri…
Quantum phase transition from bounded to extensive entanglement entropy in a frustration-free spin chain
Zhao Zhang, Amr Ahmadain, Israel Klich
We introduce a continuous family of frustration-free Hamiltonians with exactly solvable ground states. We prove that the {ground state of our model is non-degenerate and exhibits}…