Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Kargarian, M."'
Autor:
Hemmatiyan, S., Movassagh, M. Rahimi, Ghassemi, N., Kargarian, M., Rezakhani, A. T., Langari, A.
Publikováno v:
J. Phys.: Condens. Matter 27 (2015) 155601
The Kondo-necklace model can describe magnetic low-energy limit of strongly correlated heavy fermion materials. There exist multiple energy scales in this model corresponding to each phase of the system. Here, we study quantum phase transition betwee
Externí odkaz:
http://arxiv.org/abs/1112.5783
Publikováno v:
Fortsch.Phys.57:1103-1110,2010
We introduce a two-body quantum Hamiltonian model with spins-$\half$ located on the vertices of a 2D spatial lattice. The model exhibits an exact topological degeneracy in all coupling regimes. This is a remarkable non-perturbative effect. The model
Externí odkaz:
http://arxiv.org/abs/0907.0948
Publikováno v:
New J. Phys. 12 (2010) 025018
Topological color codes are among the stabilizer codes with remarkable properties from quantum information perspective. In this paper we construct a four-valent lattice, the so called ruby lattice, governed by a 2-body Hamiltonian. In a particular re
Externí odkaz:
http://arxiv.org/abs/0906.4127
Publikováno v:
Phys. Rev. A 79, 042319 (2009)
In this paper the the effect of Dzyaloshinskii-Moriya interaction and anisotropy on the Entanglement of Heisenberg chain has been studied. While the anisotropy suppress the entanglement due to favoring of the alignment of spins, the DM interaction re
Externí odkaz:
http://arxiv.org/abs/0903.0630
Publikováno v:
Phys.Rev.B80:075111,2009
We introduce a two-body quantum Hamiltonian model of spin-1/2 on a 2D spatial lattice with exact topological degeneracy in all coupling regimes. There exists a gapped phase in which the low-energy sector reproduces an effective color code model. High
Externí odkaz:
http://arxiv.org/abs/0811.0911
We have studied the phase diagram and entanglement of the one dimensional Ising model with Dzyaloshinskii-Moriya (DM) interaction. We have applied the quantum renormalization group (QRG) approach to get the stable fixed points, critical point and the
Externí odkaz:
http://arxiv.org/abs/0804.4579
Publikováno v:
Phys. Rev. A 77, 032346 (2008)
We have applied our recent approach (Kargarian, et.al Phys. Rev. A 76, 60304 (R) (2007)) to study the quantum information properties of the anisotropic s=1/2 Heisenberg chain. We have investigated the underlying quantum information properties like th
Externí odkaz:
http://arxiv.org/abs/0711.2358
Publikováno v:
Phys. Rev. A 76, 060304(R) (2007)
We have combined the idea of renormalization group and quantum information theory. We have shown how the entanglement or concurrence evolve as the size of the system being large, i.e. the finite size scaling is obtained. Moreover, It introduces how t
Externí odkaz:
http://arxiv.org/abs/0710.5843
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