Fig. 7: Operator set for the entanglement-Hamiltonian ansatz.
From: Quantum computing universal thermalization dynamics in a (2 + 1)D Lattice Gauge Theory
Representation of the operator set in the entanglement-Hamiltonian ansatz used in our study, encompassing operators positioned inside the subsystem. All operators are Hermitian. Electric fields along the x-direction are interdependent (since Vy = 1), thus not treated as independent operators. For the specific subsystem with NA = 4, our ansatz incorporates a total of 73 distinct operators. While this is close to the subsystem Hilbert-space dimension, for a larger system, the number of operators scales linearly with the degrees of freedom within the subsystem.
