Fidelity approach to Gaussian transitions

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dc.creatorTzeng, Yu-Chin
dc.creatorHung, Hsiang-Hsuan
dc.creatorChen, Yung-Chung
dc.creatorYang, Min-Fong
dc.date2008-04-03
dc.date.accessioned2026-07-07T09:44:26Z
dc.date.available2026-07-07T09:44:26Z
dc.descriptionThe fidelity approach to the Gaussian transitions in spin-one XXZ spin chains with three different values of Ising-like anisotropy lambda is analyzed by means of the density matrix renormalization group (DMRG) technique for systems of large sizes. We find that, despite the success in the cases of lambda=2.59 and 1, the fidelity susceptibility fails to detect the Gaussian transition for lambda=0.5. Thus our results demonstrate the limitation of the fidelity susceptibility in characterizing quantum phase transitions, which was proposed recently in general frameworks.
dc.description9 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/0804.0537
dc.identifierhttp://arxiv.org/abs/0804.0537
dc.identifierPhys. Rev. A 77, 062321 (2008)
dc.identifierdoi:10.1103/PhysRevA.77.062321
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162871
dc.subjectQuantum Physics
dc.subjectStatistical Mechanics
dc.titleFidelity approach to Gaussian transitions
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