Analytical recursive method to ascertain multisite entanglement in doped quantum spin ladders

作者:Roy Sudipto Singha*; Dhar Himadri Shekhar; Rakshit Debraj; Sen Aditi; Sen Ujjwal
来源:PHYSICAL REVIEW B, 2017, 96(7): 075143.
DOI:10.1103/PhysRevB.96.075143

摘要

We formulate an analytical recursive method to generate the wave function of doped short-range resonating valence bond (RVB) states as a tool to efficiently estimate multisite entanglement as well as other physical quantities in doped quantum spin ladders. We prove that doped RVB ladder states are always genuine multipartite entangled. Importantly, our results show that within specific doping concentration and model parameter regimes, the doped RVB state essentially characterizes the trends of genuine multiparty entanglement in the exact ground states of the Hubbard model with large on-site interactions, in the limit that yields the t-J Hamiltonian.

  • 出版日期2017-8-22