Gutzwiller mean-field theory

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August undefined, 2024

WebThe calculation of expectation values for Gutzwiller wave-functions is a straightforward task, once the basic structure of diagrams in infinite dimensions is understoodbgw ; prb98 ; … WebOur theory is a systematic generalization of the Bogoliubov theory of weakly interacting gases. The control parameter of the theory, defined …

Superfluid and Insulating Phases in an Interacting-Boson Model: Mean …

WebMar 6, 2024 · In this paper, we study the two-components extended BH model on a two-dimensional(2D) square lattice. By employing the inhomogeneous dynamical Gutzwiller mean-field theory (DGMFT) , , , we reveal the quantum phases in which the order parameter and occupancy are displayed site by site. With periodic boundary condition, … WebAug 9, 2024 · Download PDF Abstract: We develop a quantum many-body theory of the Bose-Hubbard model based on the canonical quantization of the action derived from a … barge canal market

Equivalence of Gutzwiller and slave-boson mean-field theories

WebJul 27, 2012 · Jörg Bünemann. In this tutorial presentation, we give a comprehensive introduction into the Gutzwiller variational approach and its merger with the density … Web2.1 Mean-ﬁeld theories In the theory of classical and quantum many-body systems an overall description of the prop-erties of a model is often obtained within a mean-ﬁeld theory. Although the term is frequently used it does not have a precise meaning, since there exist numerous ways to derive mean-ﬁeld theories. WebWe develop a quantum many-body theory of the Bose-Hubbard model based on the canonical quantization of the action derived from a Gutzwiller mean-field ansatz. Our theory is a systematic generalization of the Bogoliubov theory of weakly interacting gases. The control parameter of the theory, defined as the zero point fluctuations on top of the … barged meaning in kannada

(PDF) Chiral phases of two-dimensional hard-core bosons with …

Quantum Field Theory for the Three-Body Constrained Lattice Bose …

WebI hold a position as a Postdoctoral Scholar - Teaching Fellow at the University of Southern California (USC), with a secondary role as a Visiting Researcher at the Information Sciences Institute ... WebMay 14, 2014 · Gutzwiller mean-field method in Bose Hubbard model. Gutzwiller mean-felid method is an efficient way to study Bose-Hubabrd model in optical lattice with a … barge darwin to maningridaWebMar 31, 2024 · From this representation one can project to single occupancy and evaluate the entanglement spectra after Gutzwiller projection. We then obtain the MPS and iMPS representation of Gutzwiller projected mean-field states that arise from the variational slave-fermion approach to the S = 1 bilinear-biquadratic quantum spin chain. suzano suzano

"WebGutzwiller–RVB theory of high-temperature superconductivity: Results from renormalized mean-field theory and variational Monte Carlo calculations B. Edegger Institute for … " - Gutzwiller mean-field theory

Gutzwiller mean-field theory

Finite and infinite matrix product states for Gutzwiller projected mean …

WebOur theory is a systematic generalization of the Bogoliubov theory of weakly interacting gases. The control parameter of the theory, defined as the zero point fluctuations on top … WebJul 25, 2007 · Using both strong-coupling expansion and Gutzwiller mean-field theory, we chart out the phase diagrams of the bosons in the presence of such spin-orbit interaction. We compute the momentum ...

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WebJul 20, 2024 · We examine the zero- and finite-temperature phase diagrams of soft-core bosons of the extended Bose-Hubbard model on a square optical lattice. To study …

WebMay 29, 2012 · We study in this paper a series of Gutzwiller projected wave functions for S = 1 spin chains obtained from a fermionic mean-field theory for general S > 1 / 2 spin systems [Liu, Zhou, and Ng, Phys. Rev. B 81, 224417 (2010)] applied to the bilinear-biquadratic (J-K) model.The free-fermion mean-field states before the projection are 1D … WebApr 22, 1991 · This approach uncovers the limitations of the Gutzwiller approximation and clarifies its connection to the "auxiliary-boson" mean- field theory of the Anderson model, leading to a novel strong-coupling mean-field theory which allows for a unified treatment of antiferromagnetism and ferromagnets, metal-to-insulator transition, and Kondo …

WebWe develop a quantum many-body theory of the Bose-Hubbard model based on the canonical quantization of the action derived from a Gutzwiller mean-ﬁeld ansatz. Our theory is a systematic generalization of the Bogoliubov theory of weakly interacting gases. The control parameter of the theory, deﬁned as the zero point WebDec 16, 2009 · The procedure can be seen as a proper quantization of the Gutzwiller mean field theory. The theory is conveniently evaluated in the framework of the quantum effective action, for which the usual symmetry principles are now supplemented with a ``constraint principle'' operative on short distances. We test the theory via investigation …

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WebWe develop a quantum many-body theory of the Bose-Hubbard model based on the canonical quantization of the action derived from a Gutzwiller mean-ﬁeld ansatz. Our … barge companies paducah kyWebMar 15, 1993 · Abstract. We carry out a complete Gutzwiller projection on Schwinger boson mean-field states of quantum Heisenberg models. For the 2-d spin- 2 antiferromagnet in a square lattice we obtain analytically a ground state energy of -0.3352 J /bond. The spin-spin correlation length behaves as ξ∼ ( J T) 1 2 exp (0.670 J/T ), with J⋍1300 K fitting ... suzano ukWebDensity matrix renormalization group (DMRG) and Schwinger boson mean field theory (SBMFT) are used to study the behavior of the ground state energy in the integer spin two-dimensional anisotropic J(1 suzano tremWebMar 30, 2015 · In contrast to Gutzwiller mean-field theory and strong-coupling perturbative approaches, nonequilibrium bosonic dynamical mean-field theory captures not only dynamical transitions but also damping and thermalization effects at finite temperature. We apply the formalism to quenches in the Bose-Hubbard model, starting from both the … suzano ti pra vcWebJan 7, 2024 · The time-dependent Gutzwiller approximation is rederived on the basis of a variational wave function which is a direct product of a Slater determinant and a coherent … barged meaning in tamilWebMay 9, 2024 · After we replace the projection operator by the Gutzwiller factors by using the mean-field order parameters defined in Eq. 2.4, the energy of the renormalized Hamiltonian (Eq. 2.3) becomes the following as we part the four operators ( \langle CCCC \rangle ) with mean-field variables: barge day tripsWebJul 15, 2005 · We find that bosons confined to higher bands of optical lattices allow for a rich phase diagram, including the supersolid phase. Using Gutzwiller, mean-field theory we establish the parameter regime necessary to maintain metastable states generated by an extended Bose-Hubbard model. barge dance