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Confined states of a positronium (Ps) in the spherical and circular quantum dots (QDs) are theoretically investigated in two size-quantization regimes: strong and weak. Two-band approximation of Kane dispersion law and parabolic dispersion law of cha
Externí odkaz:
http://arxiv.org/abs/1505.02705
Two dimensional InAs/GaAs quantum ring (QR) is considered using the effective potential approach. The symmetry of QR shape is violated as it is in the well-known Bohigas annular billiard. We calculate energy spectrum and studied the spatial localizat
Externí odkaz:
http://arxiv.org/abs/1211.1991
We consider the several phenomena which are taking place in Quantum Dots (QD) and Quantum Rings (QR): The connection of the Quantum Chaos (QC) with the reflection symmetry of the QD, Disappearance of the QC in the tunnel coupled chaotic QD, electron
Externí odkaz:
http://arxiv.org/abs/1206.1354
We investigate the electron localization in double concentric quantum rings (DCQRs) when a perpendicular magnetic field is applied. In weakly coupled DCQRs, the situation can occur when the single electron energy levels associated with different ring
Externí odkaz:
http://arxiv.org/abs/1106.3671
Publikováno v:
Physica E 43 (2011) 1669-1676
The electronic structure of the semiconductor double concentric quantum nano-ring (DCQR) is studied under the single sub-band effective mass approach. We show that in the weakly coupled DCQR, that has been placed in transverse magnetic field, the ele
Externí odkaz:
http://arxiv.org/abs/1104.3189
Publikováno v:
Physica E 42 (2010) 1979-1983
Spherical shaped Si quantum dots (QDs) embedded into the SiO2 substrate are considered in the single sub-band effective mass approach. Nonparabolicity of the Si conduction band is described by the energy dependence of electron effective mass. Calcula
Externí odkaz:
http://arxiv.org/abs/0912.5052
Autor:
Matinyan, S. G., Müller, B.
Publikováno v:
J.Phys. A39 (2006) L285-L292
We study the semiclassical Wigner-Kirkwood (WK) expansion of the partition function $Z(t)$ for arbitrary even homogeneous potentials, starting from the Bloch equation. As is well known, the phase-space kernel of $Z$ satisfies the so-called Uhlenbeck-
Externí odkaz:
http://arxiv.org/abs/quant-ph/0602041
We review the idea of chaotic quantization, based on the dynamics of classical lattice gauge systems as well as on non-abelian plasma physics in the infrared limit. The basic conjecture between Planck constant and properties of the five dimensional c
Externí odkaz:
http://arxiv.org/abs/hep-lat/0305023
We argue that the quantized non-Abelian gauge theory can be obtained as the infrared limit of the corresponding classical gauge theory in a higher dimension. We show how the transformation from classical to quantum field theory emerges, and calculate
Externí odkaz:
http://arxiv.org/abs/hep-th/0301131