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Collective charge excitations and the metal-insulator transition in the square lattice Hubbard-Coulomb model

Ulybyshev, Maksim , Winterowd, Christopher and Zafeiropoulos, Savvas (2017) Collective charge excitations and the metal-insulator transition in the square lattice Hubbard-Coulomb model. Physical Review B 96 (20).

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Other URL: http://doi.org/10.1103/PhysRevB.96.205115


Abstract

In this article, we discuss the nontrivial collective charge excitations (plasmons) of the extended square lattice Hubbard model. Using a fully nonperturbative approach, we employ the hybrid Monte Carlo algorithm to simulate the system at half-filling. A modified Backus-Gilbert method is introduced to obtain the spectral functions via numerical analytic continuation. We directly compute the ...

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Item type:Article
Date:2017
Institutions:Physics > Institute of Theroretical Physics
Identification Number:
ValueType
10.1103/PhysRevB.96.205115DOI
Keywords:NARROW ENERGY-BANDS; MEAN-FIELD THEORY; ELECTRON CORRELATIONS; GW METHOD; EQUATIONS; NOISE; QCD;
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:39580
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