Quarter-Filled Extended Hubbard Model at Strong Coupling
2003 ◽
Vol 17
(18n20)
◽
pp. 3339-3342
◽
Keyword(s):
We apply a perturbation approach to study the quarter-filled extended Hubbard model at strong coupling limit. An effective Hamiltonian up to sixth order in t/U and t/V (t defines electron hopping, U defines on-site Coulomb interaction, and V defines nearest-neighbor Coulomb interaction) for one-dimensional chains was obtained. The spin-spin correlation functions were involved, which can be obtained after comparing to the ground state energy numerically obtained from the phase diagram.
2005 ◽
Vol 19
(01n03)
◽
pp. 213-216
2001 ◽
Vol 22
(3)
◽
pp. 343-349
◽
2012 ◽
Vol 26
(29)
◽
pp. 1250156
◽
Keyword(s):
2000 ◽
Vol 14
(29n31)
◽
pp. 3508-3513
◽
1991 ◽
Vol 05
(12)
◽
pp. 2109-2123
◽
Keyword(s):
2016 ◽
Vol 380
(1-2)
◽
pp. 272-276
◽