Quantum Critical Point at Finite Doping in the 2D Hubbard Model: A Dynamical Cluster Quantum Monte Carlo Study

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dc.creatorVidhyadhiraja, N. S.
dc.creatorMacridin, A.
dc.creatorSen, C.
dc.creatorJarrell, M.
dc.creatorMa, Michael
dc.date2008-09-09
dc.date2009-03-23
dc.date.accessioned2026-07-07T12:54:38Z
dc.date.available2026-07-07T12:54:38Z
dc.descriptionWe explore the Matsubara quasiparticle fraction and the pseudogap of the two-dimensional Hubbard model with the dynamical cluster quantum Monte Carlo method. The character of the quasiparticle fraction changes from non-Fermi liquid, to marginal Fermi liquid to Fermi liquid as a function of doping, indicating the presence of a quantum critical point separating non-Fermi liquid from Fermi liquid character. Marginal Fermi liquid character is found at low temperatures at a very narrow range of doping where the single-particle density of states is also symmetric. At higher doping the character of the quasiparticle fraction is seen to cross over from Fermi Liquid to Marginal Fermi liquid as the temperature increases.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0809.1477
dc.identifierhttp://arxiv.org/abs/0809.1477
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224001
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleQuantum Critical Point at Finite Doping in the 2D Hubbard Model: A Dynamical Cluster Quantum Monte Carlo Study
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