نتایج جستجو برای: exact diagonalization

تعداد نتایج: 122324  

1997
WERNER FETTES INGO MORGENSTERN THOMAS HUSSLEIN

We present exact and stochastic diagonalization results for a BCS-reduced Hubbard model. The kinetic Hamiltonian is the same as in the single band Hubbard model with additional next nearest neighbor hopping. The interaction of this model is designed to inhibit superconductivity in the dx2−y2 channel. The ground state of this model is studied by exact and stochastic diagonalization technique. We...

2016
Wenbo Fu Subir Sachdev

We present numerical studies of fermion and boson models with random all-to-all interactions (the SYK models). The high temperature expansion and exact diagonalization of the N -site fermion model are used to compute the entropy density: our results are consistent with the numerical solution of N =∞ saddle point equations, and the presence of a non-zero entropy density in the limit of vanishing...

2016
Wenbo Fu Subir Sachdev

We present numerical studies of fermion and boson models with random all-to-all interactions (the SYK models). The high temperature expansion and exact diagonalization of the N -site fermion model are used to compute the entropy density: our results are consistent with the numerical solution of N =1 saddle point equations, and the presence of a non-zero entropy density in the limit of vanishing...

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