0602048v2

related topics
{energy, state, states}
{entanglement, phys, rev}
{equation, function, exp}
{temperature, thermal, energy}
{information, entropy, channel}
{observables, space, algebra}
{state, states, entangled}
{let, theorem, proof}
{phase, path, phys}
{operator, operators, space}

Single-Site Entanglement of Fermions at a Quantum Phase Transition

Daniel Larsson, Henrik Johannesson

abstract: We show that the single-site entanglement of a generic spin-1/2 fermionic lattice system can be used as a reliable marker of a finite-order quantum phase transition, given certain provisos. We discuss the information contained in the single-site entanglement measure, and provide illustrations from the Mott-Hubbard metal-insulator transitions of the one-dimensional Hubbard model, and the Hubbard model with long-range hopping.

oai_identifier:
oai:arXiv.org:quant-ph/0602048
categories:
quant-ph cond-mat.str-el
comments:
4 pages, no figure. Published version
doi:
10.1103/PhysRevA.73.042320
arxiv_id:
quant-ph/0602048
journal_ref:
Phys. Rev. A 73, 042320 (2006)
created:
2006-02-03
updated:
2006-05-19

Full article ▸

related documents
0412118v2
0412056v1
0409149v2
0608051v1
9710049v1
9708020v1
9909047v1
0606110v1
0209078v2
0505101v1
0610114v3
0701096v2
0702051v1
0702078v2
0507186v2
9705040v1
0512214v3
0407015v1
0007031v1
0501124v1
0603093v1
0512007v2
0512249v2
0612175v1
0612039v1