Hubbard physics in the symmetric half-filled periodic anderson-hubbard model
نویسندگان
چکیده
منابع مشابه
Metallicity in the half-filled Holstein-Hubbard model
We re-examine the Peierls insulator to Mott insulator transition scenario in the one-dimensional Holstein-Hubbard model where, at half-filling, electron-phonon and electron-electron interactions compete for establishing chargeand spin-density-wave states, respectively. By means of large-scale density-matrix renormalization group calculations we determine the spin, single-particle and two-partic...
متن کاملHalf-filled stripes in the t-t-U Hubbard model
Using a self-consistent Hartree-Fock approximation we investigate the relative stability of various stripe phases in the extended t-t-U Hubbard model. One finds that a negative ratio of nextto nearest-neighbor hopping t/t < 0 expells holes from antiferromagnetic domains and reinforces the stripe order. Therefore the half-filled stripes not only accommodate holes but also redistribute them so th...
متن کاملQuantum-disentangled liquid in the half-filled Hubbard model
We investigate the existence of quantum disentangled liquid (QDL) states in the half-filled Hubbard model on bipartite lattices. In the one dimensional case we employ a combination of integrability and strong coupling expansion methods to argue that there are indeed finite energy-density eigenstates that exhibit QDL behaviour in the sense of J. Stat. Mech. P10010 (2014). The states exhibiting t...
متن کاملDimerization in a half-filled one-dimensional extended hubbard model.
We use a density-matrix renormalization group method to study quantitatively the phase diagram of a one-dimensional extended Hubbard model at half filling by investigating the correlation functions and structure factors. We confirmed the existence of a novel narrow region with long-range bond-order-wave order that was highly controversial recently between the charge-density-wave phase and Mott ...
متن کاملThe Half-filled Hubbard Model in the Pair Approximation of the Cluster Variation Method
The half filled Hubbard model is studied in the pair approximation of the Cluster Variation Method. The use of the SO(4) symmetry of the model makes possible to give a complete analytical characterization of the ground state, by means of explicit expressions for the double occupancy and the nearest neighbor correlation functions. The finite temperature analysis is reduced to the numerical solut...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Korean Physical Society
سال: 2013
ISSN: 0374-4884,1976-8524
DOI: 10.3938/jkps.62.1423