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- W87675156 abstract "We derive energy minima for biseparable states in three- and four-spin systems, with Heisenberg Hamiltonian and s <= 5/2. These provide lower bounds for tripartite and quadripartite entanglement in chains and rings with larger spin number N. We demonstrate that the ground state of an $N$-spin Heisenberg chain is $N$-partite entangled, and compute the energy gap with respect to biseparable states for N <= 8." @default.
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- W87675156 date "2012-09-21" @default.
- W87675156 modified "2023-10-04" @default.
- W87675156 title "Energy as a witness of multipartite entanglement in chains of arbitrary spins" @default.
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- W87675156 doi "https://doi.org/10.1103/physreva.86.032330" @default.
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