Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Vorobyov, O."'
Publikováno v:
Condens. Matter Phys., 2015, vol. 18, No. 4, 43004
The spectrum of phonon-like collective excitations in the system of Bose-atoms in optical lattice (more generally, in the system of quantum particles described by the Bose-Hubbard model) is investigated. Such excitations appear due to displacements o
Externí odkaz:
http://arxiv.org/abs/1512.07788
Autor:
Stasyuk, I. V., Vorobyov, O.
Publikováno v:
Condens. Matter Phys., 2013, vol. 16, No. 2, 23005
The energy spectrum, spectral density and phase diagrams have been obtained for two-sublattice hard-core boson model in frames of random phase approximation approach. Reconstruction of boson spectrum at the change of temperature, chemical potential a
Externí odkaz:
http://arxiv.org/abs/1307.2005
Publikováno v:
Condens. Matter Phys., 2011, vol. 14, No. 2, 23702:1-7
We focus on the features of spectra and diagrams of states obtained via exact diagonalization technique for finite ionic conductor chain in periodic boundary conditions. One dimensional ionic conductor is described with the lattice model where ions a
Externí odkaz:
http://arxiv.org/abs/1106.5136
Publikováno v:
Phys. Rev. B 71, 045120 (2005) (17 pages)
We solve for the electronic Raman scattering response functions on an infinite-dimensional hypercubic lattice employing dynamical mean field theory. This contribution extends previous work on the nonresonant response to include the mixed and resonant
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408400
Publikováno v:
Journal of Physics and Chemistry of Solids 67 (2006) P. 336-339
We present an exact solution for electronic Raman scattering in a single-band, strongly correlated material, including nonresonant, resonant and mixed contributions. Results are derived for the spinless Falicov-Kimball model, employing dynamical mean
Externí odkaz:
http://arxiv.org/abs/cond-mat/0407120
Publikováno v:
Physica B: Condensed Matter, Vol. 359-361 (2005) P. 705-707
We calculate the resonant electronic Raman scattering for the Falicov-Kimball model near the Mott transition on a hypercubic lattice. The solution is exact, and employs dynamical mean field theory.
Comment: 2 pages, 2 figures, contribution to th
Comment: 2 pages, 2 figures, contribution to th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406305
Publikováno v:
Phys. Rev. Lett. 93, 137402 (2004)
We use dynamical mean field theory to find an exact solution for inelastic light scattering in strongly correlated materials such as those near a quantum-critical metal-insulator transition. We evaluate the results for $\textbf{q}=0$ (Raman) scatteri
Externí odkaz:
http://arxiv.org/abs/cond-mat/0311070
Akademický článek
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Publikováno v:
In Journal of Physics and Chemistry of Solids 2006 67(1):336-339
Publikováno v:
In Physica B: Physics of Condensed Matter 2005 359:705-707