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Mean field magnetic phase diagrams for the two dimensional t-t '-U

Phase diagram of the Bose-Hubbard Model. 2016-04-25 The Hubbard model is an approximate model used, especially in solid-state physics, to describe the transition between conducting and insulating systems. The Hubbard model, named after John Hubbard, is a simple model of interacting particles in a lattice, with only two terms in the Hamiltonian (see example below): a kinetic term allowing for tunneling ("hopping") of particles between sites of Quantum Phase Diagram of One-Dimensional Spin and Hubbard Models with Transitions to Bond Order Wave Phases† Manoranjan Kumar,a S. Ramasesha,b and Zoltán G. Soos c,* aS. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata-700098, India Phase Diagram of the Triangular Extended Hubbard Model Luca F. Tocchio,1,2 Claudius Gros,1 Xue-Feng Zhang (张学锋),3 and Sebastian Eggert3 1Institute for Theoretical Physics, University of Frankfurt, Max-von-Laue-Straße 1, D-60438 Frankfurt, Germany 2CNR-IOM-Democritos National Simulation Centre and International School for Advanced Studies (SISSA), epl draft Phase diagram of the Bose-Hubbard Model on Complex Networks Arda Halu1 , Luca Ferretti2 , Alessandro Vezzani3,4 , Ginestra Bianconi1 1 Department of Physics, Northeastern University, Boston, Massachusetts 02115 USA. arXiv:1203.1566v2 [cond-mat.dis-nn] 18 Jun 2012 2 Centre de Recerca en AgriGenomica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain 3 Dipartimento di Fisica Phase Diagram of the Commensurate Two-Dimensional Disordered Bose-Hubbard Model S¸.G.So¨yler,1 M. Kiselev,1 N.V. Prokof’ev,2,3 and B.V. Svistunov2,3 1The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, I-34151 Trieste, Italy 2Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA 3Russian Research Center ‘‘Kurchatov Institute Download Citation | On Dec 1, 2019, R. O. Zaitsev published On the Phase Diagram of the 1D Hubbard Model | Find, read and cite all the research you need on ResearchGate TYCHO-DIMENSIONAL HUBBARD MODEL: NUMERICAL.. . O.4 — ' ' ' ' J I It For nonzero U, the magnetic susceptibility within the random-phase approximation (RPA) is given by the sum of particle-hole ladder diagrams' as 03— N0 0$ O~l o 0.2— N Q 0.1— 0 Pi s I & i & I. i «& I i w i I s ~ \J — 4 — 8 0 3 FIG. 2. Density of states for noninteracting electrons on a two-dimensional square The phase diagram of the Hubbard model.

and Phase Diagram of the Two-Orbital Atomic Hubbard Model A. Avella, F. Mancini, G. Scelza Dipartimento di Fisica \E.R. Caianiello" | Unitµa CNISM di Salerno Universitµa degli Studi di Salerno, 84081 Baronissi (SA), Italy and S. Chaturvedi School of Physics, University of Hyderabad, Hyderabad 500 134, India We study the two-orbital Hubbard Phase diagram of the extended Hubbard model at weak coupling P. G. J. van Dongen Institut fu ¨r Theoretische Physik C, Rheinisch-Westfalische Technische Hochschule Aachen, 52056 Aachen, Germany ~Received 1 December 1995! The Hubbard model including nearest neighbor interaction is studied at T50onad-dimensional hypercubic rections to the dynamical mean-ﬁeld phase diagram of the two-dimensional Hubbard model. Regions of antiferromagnetic, d-wave superconducting, pseudo-gapped non-Fermi liquid, and Fermi liquid behaviors are found, in rough agreement with the generic phase diagram of the cuprates. The phase diagram of the attractive Hubbard model with spatially inhomogeneous interactions is obtained using a single-site dynamical mean-ﬁeld theory-like approach. The model is characterized by three parameters: the interaction strength, the active fraction fraction of sites with the attractive interaction , and electron ﬁlling. Phase diagram of the Bose-Hubbard Model.

Half-filled one-dimensional extended Hubbard model: Phase diagram and thermodynamics - NASA/ADS We study the thermodynamics of the one-dimensional extended Hubbard model at half filling using a density-matrix renormalization group method applied to transfer matrices. The phase diagram of the attractive Hubbard model with spatially inhomogeneous interactions is obtained using a single-site dynamical mean-ﬁeld theory-like approach.

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The temperature-doping phase diagram of the 2D Hubbard model calculated with QMC and DCA for Nc = 4, U = 2. TN and Tc were calculated from the divergences of the antiferromagnetic and d-wave We study the ground state phase diagram of the two dimensional t - t' - U Hubbard model concentrating on the competition between antiferro-, ferro-, and paramagnetism.
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N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata-700098, India Phase Diagram of the Triangular Extended Hubbard Model Luca F. Tocchio,1,2 Claudius Gros,1 Xue-Feng Zhang (张学锋),3 and Sebastian Eggert3 1Institute for Theoretical Physics, University of Frankfurt, Max-von-Laue-Straße 1, D-60438 Frankfurt, Germany 2CNR-IOM-Democritos National Simulation Centre and International School for Advanced Studies (SISSA), epl draft Phase diagram of the Bose-Hubbard Model on Complex Networks Arda Halu1 , Luca Ferretti2 , Alessandro Vezzani3,4 , Ginestra Bianconi1 1 Department of Physics, Northeastern University, Boston, Massachusetts 02115 USA. arXiv:1203.1566v2 [cond-mat.dis-nn] 18 Jun 2012 2 Centre de Recerca en AgriGenomica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain 3 Dipartimento di Fisica Phase Diagram of the Commensurate Two-Dimensional Disordered Bose-Hubbard Model S¸.G.So¨yler,1 M. Kiselev,1 N.V. Prokof’ev,2,3 and B.V. Svistunov2,3 1The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, I-34151 Trieste, Italy 2Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA 3Russian Research Center ‘‘Kurchatov Institute Download Citation | On Dec 1, 2019, R. O. Zaitsev published On the Phase Diagram of the 1D Hubbard Model | Find, read and cite all the research you need on ResearchGate TYCHO-DIMENSIONAL HUBBARD MODEL: NUMERICAL.. . O.4 — ' ' ' ' J I It For nonzero U, the magnetic susceptibility within the random-phase approximation (RPA) is given by the sum of particle-hole ladder diagrams' as 03— N0 0$ O~l o 0.2— N Q 0.1— 0 Pi s I & i & I. i «& I i w i I s ~ \J — 4 — 8 0 3 FIG. 2. Density of states for noninteracting electrons on a two-dimensional square The phase diagram of the Hubbard model.
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Rev. B 76, 155121 – Published 24 October 2007 Phase Diagram of the Triangular Extended Hubbard Model Luca F. Tocchio,1,2 Claudius Gros,1 Xue-Feng Zhang (张学锋),3 and Sebastian Eggert3 1Institute for Theoretical Physics, University of Frankfurt, Max-von-Laue-Straße 1, D-60438 Frankfurt, Germany Phase diagrams of the attractive Kane–Mele–Hubbard model as functions of the tuning parameter x = 3 p 3l/(3 p 3l +3t0 mAB). Solid lines mark topological phase transitions between the topological non-trivial and trivial insulating states, and the s-wave spin-singlet superﬂuid state: (a) without the NNN term (t0= 0), and (b) with ( t0= 0.15 ).

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0= t g (CisCjs+CjsCis ). Abstract [en]. We study the ground state phase diagram of the two dimensional t - t' - U Hubbard model concentrating on the competition between antiferro-, ferro-, Köp boken The Hubbard Model (ISBN 9781489910448) hos Adlibris. has been placed on the phase diagram of the two-dimensional variant of the model.