22 citations · 56 across the 5 of their papers we have counts for
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cond-mat.str-el2022★ 5 cited
State Space Geometry of the Spin-1 Antiferromagnetic Heisenberg Chain
J. Lambert, Erik S. Sørensen
We study the phase diagram of the spin-1 antiferromagnetic Heisenberg chain with uniaxial anisotropy and applied magnetic field in terms of the genuine multipartite entanglement as…
cond-mat.str-el2020★ 11 cited
Revealing divergent length scales using quantum Fisher information in the Kitaev honeycomb model
James Lambert, Erik S. Sørensen
We compute the quantum Fisher information (QFI) associated with two different local operators in the Kitaev honeycomb model, and find divergent behaviour in the second derivatives…
cond-mat.str-el2018★ 16 cited
Estimates of the Quantum Fisher Information in the Anti-Ferromagnetic Heisenberg Spin Chain with Uniaxial Anisotropy
James Lambert, Erik Sorensen
The quantum Fisher information is of considerable interest not only for quantum metrology but also because it is a useful entanglement measure for finite temperature mixed states.…