arXiv Analytics

Sign in

arXiv:1807.07717 [cond-mat.str-el]AbstractReferencesReviewsResources

The Hubbard dimer within the Green's function equation of motion approach

Francesco Catalano, Johan Nilsson

Published 2018-07-20Version 1

We consider a formulation of the equation of motion technique for Green's function in which the unknown averages are computed by solving a linear system. This linear system appears solvable for all finite temperatures, but depending on the system parameters the condition number can be very large, making the solution numerically unfeasible at low temperatures. In the example that we consider, the Hubbard dimer, we can get rid of this problem by making use of total spin as a good quantum number.

Related articles: Most relevant | Search more
arXiv:cond-mat/9902199 (Published 1999-02-13)
Equation of motion approach to the solution of Anderson model
arXiv:1802.09988 [cond-mat.str-el] (Published 2018-02-27)
Linear response time-dependent density functional theory of the Hubbard dimer
arXiv:1809.08528 [cond-mat.str-el] (Published 2018-09-23)
Benchmarking the simplest slave-particle theory with Hubbard dimer