A new correlator in quantum spin chains

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dc.creatorKeating, J. P.
dc.creatorMezzadri, F.
dc.creatorNovaes, M.
dc.date2006-04-06
dc.date.accessioned2026-07-07T08:46:58Z
dc.date.available2026-07-07T08:46:58Z
dc.descriptionWe propose a new correlator in one-dimensional quantum spin chains, the $s-$Emptiness Formation Probability ($s-$EFP). This is a natural generalization of the Emptiness Formation Probability (EFP), which is the probability that the first $n$ spins of the chain are all aligned downwards. In the $s-$EFP we let the spins in question be separated by $s$ sites. The usual EFP corresponds to the special case when $s=1$, and taking $s>1$ allows us to quantify non-local correlations. We express the $s-$EFP for the anisotropic XY model in a transverse magnetic field, a system with both critical and non-critical regimes, in terms of a Toeplitz determinant. For the isotropic XY model we find that the magnetic field induces an interesting length scale.
dc.description6 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/cond-mat/0604173
dc.identifierhttp://arxiv.org/abs/cond-mat/0604173
dc.identifierJ. Phys. A 39, L389 (2006)
dc.identifierdoi:10.1088/0305-4470/39/24/L01
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/143438
dc.subjectStrongly Correlated Electrons
dc.subjectMathematical Physics
dc.titleA new correlator in quantum spin chains
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