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pro vyhledávání: '"Sil, S."'
Publikováno v:
In Communications in Nonlinear Science and Numerical Simulation October 2023 125
Akademický článek
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Publikováno v:
Physica A436, 814 (2015)
In this paper we present a theoretical investigation of the effect of a superlattice potential on some properties of non-interacting bosons in one dimensional lattices with Aubry-And\'re disorder potential. In the first part, we investigate the singl
Externí odkaz:
http://arxiv.org/abs/1409.1983
Publikováno v:
Physica A401, 214(2014)
We present a theoretical study of the effects of the next-nearest-neighbor (NNN) hopping ($t_2$) on the properties of non-interacting bosons in optical lattices in the presence of an Aubry-Andr\'{e} quasi-disorder. First we investigate, employing exa
Externí odkaz:
http://arxiv.org/abs/1308.3993
Publikováno v:
In Advances in Space Research 1 January 2019 63(1):139-147
Autor:
Das, A. N., Sil, S.
The ground state and finite temperature properties of polarons are studied considering a two-site and a four-site Holstein model by exact diagonalization of the Hamiltonian. The kinetic energy, Drude weight, correlation functions involving charge and
Externí odkaz:
http://arxiv.org/abs/0710.2766
Publikováno v:
Eur. Phys. J. D 42, 309 (2007)
We present a theoretical study of bose condensation and specific heat of non-interacting bosons in finite lattices in harmonic potentials in one, two, and three dimensions. We numerically diagonalize the Hamiltonian to obtain the energy levels of the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0606471
Publikováno v:
In Journal of Functional Analysis 15 January 2018 274(2):461-503
A model study for the coexistence of the spin density wave and superconductivity is presented. With reference to the recent angle resolved photo emmission experimental data in high T_c cuprates, presence of the nested pieces of bands is assumed. The
Externí odkaz:
http://arxiv.org/abs/cond-mat/9903234
Autor:
Bouzerar, G., Sil, S.
Using the Bond Operator Technique (BOT), we have studied the low energy excitationspectrum of a frustrated dimerized antiferromagnetic Heisenberg chain. In particular, we have compared our analytical results with previous Exact Diagonalizations (ED)
Externí odkaz:
http://arxiv.org/abs/cond-mat/9805042