Related papers: Entanglement of magnon excitations in spin chains

Entanglement of magnon excitations in spin chains

URL: http://arxiv.org/abs/2109.12826v2
Date: Tue, 15 Feb 2022 11:59:36 GMT
Title: Entanglement of magnon excitations in spin chains
Authors: Jiaju Zhang and M. A. Rajabpour
Abstract summary: In particular, we show that as far as the number of excited magnons with respect to the size of the system is small one can decompose the entanglement content. Our results effectively classify the entanglement content of wide range of integrable spin chains in the scaling limit.
Score: 0.24366811507669117
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We calculate exactly the entanglement content of magnon excited states in the integrable spin-1/2 XXX and XXZ chains in the scaling limit. In particular, we show that as far as the number of excited magnons with respect to the size of the system is small one can decompose the entanglement content, in the scaling limit, to the sum of the entanglement of particular excited states of free fermionic or bosonic theories. In addition we conjecture that the entanglement content of the generic translational invariant free fermionic and bosonic Hamiltonians can be also classified, in the scaling limit, with respect to the entanglement content of the fermionic and bosonic chains with the number operator as the Hamiltonian in certain circumstances. Our results effectively classify the entanglement content of wide range of integrable spin chains in the scaling limit.

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