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pro vyhledávání: '"Perepelitsky, Edward"'
We present the ${\cal O}(\lambda^3)$ results from the $\lambda$ expansion in the extremely correlated Fermi liquid theory applied to the infinite-dimensional $t$-$J$ model (with $J=0$), and compare the results with the earlier ${\cal O}(\lambda^2)$ r
Externí odkaz:
http://arxiv.org/abs/2204.08599
Publikováno v:
Phys. Rev. B 96, 054114 (2017)
Recent progress in extremely correlated Fermi liquid theory (ECFL) and dynamical mean field theory (DMFT) enables us to compute in the $d \to \infty$ limit the resistivity of the $t-J$ model after setting $J\to0$. This is also the $U=\infty$ Hubbard
Externí odkaz:
http://arxiv.org/abs/1703.02206
Autor:
Perepelitsky, Edward, Galatas, Andrew, Mravlje, Jernej, Žitko, Rok, Khatami, Ehsan, Shastry, B Sriram, Georges, Antoine
We derive analytical expressions for the spectral moments of the dynamical response functions of the Hubbard model using the high-temperature series expansion. We consider generic dimension $d$ as well as the infinite-$d$ limit, arbitrary electron de
Externí odkaz:
http://arxiv.org/abs/1608.01600
Publikováno v:
Phys. Rev. B 94, 045138 (2016)
We present the results for the low energy properties of the infinite dimensional t-J model with $J=0$, using $O(\lambda^2)$ equations of the extremely correlated Fermi liquid formalism. The parameter $\lambda \in [0,1]$ is analogous to the inverse sp
Externí odkaz:
http://arxiv.org/abs/1605.08213
Publikováno v:
Annals of Physics, Volume 357, June 2015, Pages 1-39
The recently developed theory of extremely correlated Fermi liquids (ECFL), applicable to models involving the physics of Gutzwiller projected electrons, shows considerable promise in understanding the phenomena displayed by the $t$-$J$ model. Its fo
Externí odkaz:
http://arxiv.org/abs/1410.5174
Publikováno v:
Phys. Rev. E 89, 063301 (2014)
We implement a highly efficient strong-coupling expansion for the Green's function of the Hubbard model. In the limit of extreme correlations, where the onsite interaction is infinite, the evaluation of diagrams simplifies dramatically enabling us to
Externí odkaz:
http://arxiv.org/abs/1310.8029
Autor:
Perepelitsky, Edward
We develop a diagrammatic approach for calculating the high temperature expansion of dynamic correlation functions, such as the electron Green's function and the time-dependent density-density and spin-spin correlation functions, for the infinite-U H
Externí odkaz:
http://arxiv.org/abs/1310.3797
We study the infinite spatial dimensionality limit of the recently developed Extremely Correlated Fermi Liquid (ECFL) theory for the t-J model. We directly analyze the Schwinger equations of motion for the Gutzwiller projected electron Green's functi
Externí odkaz:
http://arxiv.org/abs/1309.5373
We apply the recently developed extremely correlated Fermi liquid theory to the Anderson impurity model, in the extreme correlation limit. We develop an expansion in a parameter \lambda, related to n_d, the average occupation of the localized orbital
Externí odkaz:
http://arxiv.org/abs/1307.3492
Publikováno v:
Phys. Rev. B 87, 161120(R) (2013)
A strong-coupling series expansion for the Green's function and the extremely-correlated Fermi liquid (ECFL) theory are used to calculate the moments of the electronic spectral functions of the infinite-U Hubbard model. Results from these two complem
Externí odkaz:
http://arxiv.org/abs/1303.2657