scholarly journals Hyperfine Molecular Hubbard Hamiltonian

2015 ◽  
pp. 93-119
Author(s):  
Michael L. Wall
Keyword(s):  
Hubbard Hamiltonian

scholarly journals Hubbard Hamiltonian in the dimer representation Large-U case

2003 ◽  
Vol 12 (5) ◽  
pp. 304-319 ◽  
Author(s):  
M. Matlak ◽  
J. Aksamit ◽  
B. Grabiec ◽  
W. Nolting
Keyword(s):  
Hubbard Hamiltonian

scholarly journals Supersolids in the Bose-Hubbard Hamiltonian

1995 ◽  
Vol 74 (13) ◽  
pp. 2527-2530 ◽  
Author(s):  
G. G. Batrouni ◽  
R. T. Scalettar ◽  
G. T. Zimanyi ◽  
A. P. Kampf
Keyword(s):  
Hubbard Hamiltonian

Analysis of the New Unrestricted Hartree-Fock Vortex Solution of the Hubbard Hamiltonian in Two-Dimensional Systems A Small-Cluster Study

1992 ◽  
Vol 173 (2) ◽  
pp. 715-724 ◽  
Author(s):  
E. Louis ◽  
J. Galán ◽  
F. Guinea ◽  
J. A. Vergés ◽  
J. Ferrer
Keyword(s):  
Small Cluster ◽  
Two Dimensional ◽  
Hubbard Hamiltonian ◽  
Hartree Fock ◽  
Vortex Solution

Publisher's Note: Determinant quantum Monte Carlo study ofd-wave pairing in the plaquette Hubbard hamiltonian [Phys. Rev. B90, 075121 (2014)]

2014 ◽  
Vol 90 (11) ◽  
Author(s):  
T. Ying ◽  
R. Mondaini ◽  
X. D. Sun ◽  
T. Paiva ◽  
R. M. Fye ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Monte Carlo Study ◽  
Hubbard Hamiltonian ◽  
Wave Pairing

Grand-Canonical Description of the Hubbard Hamiltonian

1992 ◽  
pp. 335-343 ◽  
Author(s):  
J. Aliaga ◽  
A. N. Proto ◽  
V. Zunino
Keyword(s):  
Hubbard Hamiltonian ◽  
Grand Canonical

scholarly journals Entanglement of exact excited eigenstates of the Hubbard model in arbitrary dimension

2017 ◽  
Vol 3 (6) ◽  
Author(s):  
Oskar Vafek ◽  
Nicolas Regnault ◽  
B. Andrei Bernevig
Keyword(s):  
Arbitrary Dimension ◽  
Entanglement Entropy ◽  
Spatial Dimension ◽  
Large Set ◽  
Von Neumann ◽  
Hubbard Hamiltonian ◽  
Spin Magnetization ◽  
Magnetization Density ◽  
Leading Term ◽  
Space Occupation

We compute exactly the von Neumann entanglement entropy of the eta-pairing states - a large set of exact excited eigenstates of the Hubbard Hamiltonian. For the singlet eta-pairing states the entropy scales with the logarithm of the spatial dimension of the (smaller) partition. For the eta-pairing states with finite spin magnetization density, the leading term can scale as the volume or as the area-times-log, depending on the momentum space occupation of the Fermions with flipped spins. We also compute the corrections to the leading scaling. In order to study the eigenstate thermalization hypothesis (ETH), we also compute the entanglement Rényi entropies of such states and compare them with the corresponding entropies of thermal density matrix in various ensembles. Such states, which we find violate strong ETH, may provide a useful platform for a detailed study of the time-dependence of the onset of thermalization due to perturbations which violate the total pseudospin conservation.

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