Typical entanglement entropy with fixed global charge is given by the local thermal entropy at fixed charge density for both U(1) and SU(2) symmetries in the thermodynamic limit.
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An error-cancellation matrix-product ansatz constructs exact zero-energy many-body scar eigenstates in non-frustration-free 1D and 2D spin Hamiltonians.
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Typical entanglement entropy with charge conservation
Typical entanglement entropy with fixed global charge is given by the local thermal entropy at fixed charge density for both U(1) and SU(2) symmetries in the thermodynamic limit.
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Exact Quantum Many-Body Scars by a generalized Matrix-Product Ansatz
An error-cancellation matrix-product ansatz constructs exact zero-energy many-body scar eigenstates in non-frustration-free 1D and 2D spin Hamiltonians.