Fig. 1: The schematic diagram of sampling reduced density matrix and the characters of Heisenberg ladder. | Nature Communications

Fig. 1: The schematic diagram of sampling reduced density matrix and the characters of Heisenberg ladder.

From: Sampling reduced density matrix to extract fine levels of entanglement spectrum and restore entanglement Hamiltonian

Fig. 1: The schematic diagram of sampling reduced density matrix and the characters of Heisenberg ladder.The alt text for this image may have been generated using AI.

a A path integral configuration of a reduced density matrix. The length of imaginary time is β, and the time boundary of B/A is periodic/open. b Lattice of the Spin-1/2 Heisenberg ladder from an overhead view, with spins in A and B depicted by red and blue circles, respectively. c Its phase diagram by denoting \({J}_{{{{\rm{leg}}}}}=\cos \theta\) and \({J}_{{{{\rm{rung}}}}}=\sin \theta\).

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