High-accuracy energy spectra of a two-dimensional exciton screened by reduced dimensionality with the presence of a constant magnetic field

2019 ◽  
Vol 113 ◽  
pp. 152-164 ◽  
Author(s):  
Duy-Anh P. Nguyen ◽  
Duy-Nhat Ly ◽  
Dai-Nam Le ◽  
Ngoc-Tram D. Hoang ◽  
Van-Hoang Le
Keyword(s):  
Magnetic Field ◽  
Constant Magnetic Field ◽  
High Accuracy ◽  
Energy Spectra ◽  
Two Dimensional ◽  
Reduced Dimensionality

scholarly journals Particle Acceleration in Collisionless Magnetic Reconnection

2001 ◽  
Vol 203 ◽  
pp. 555-557
Author(s):  
P. K. Browning ◽  
G. E. Vekstein
Keyword(s):  
Magnetic Field ◽  
Field Component ◽  
Charged Particles ◽  
Energy Spectra ◽  
Uniform Field ◽  
Two Dimensional ◽  
Point Field ◽  
Field Geometry ◽  
Collisionless Reconnection ◽  
Accelerated Particles

We investigate the acceleration of charged particles in the framework of collisionless reconnection. A steady reconnection scenario is considered, with a two dimensional X-point magnetic field geometry having also a uniform field component transverse to the plane of the X-point field, and an inductive electric field generating an inflow of particles. Test particle trajectories are studied, and the energy spectra of the accelerated particles are determined.

Highly accurate analytical energy of a two-dimensional exciton in a constant magnetic field

2016 ◽  
Vol 495 ◽  
pp. 16-20 ◽  
Author(s):  
Ngoc-Tram D. Hoang ◽  
Duy-Anh P. Nguyen ◽  
Van-Hung Hoang ◽  
Van-Hoang Le
Keyword(s):  
Magnetic Field ◽  
Constant Magnetic Field ◽  
Two Dimensional

THE ENTANGLED QUANTUM HEAT ENGINE IN THE VARIOUS HEISENBERG MODELS FOR A TWO-QUBIT SYSTEM

2013 ◽  
Vol 11 (02) ◽  
pp. 1350021 ◽  
Author(s):  
ERHAN ALBAYRAK
Keyword(s):  
Magnetic Field ◽  
Constant Magnetic Field ◽  
Heat Engine ◽  
Exchange Parameter ◽  
Thermodynamic Quantities ◽  
Two Dimensional ◽  
Quantum Heat Engine ◽  
Qubit System ◽  
Heisenberg Models ◽  
Different Temperatures

The four-level entangled quantum heat engine (QHE) is analyzed in the various Heisenberg models for a two-qubit. The QHE is examined for the XX, XXX and XXZ Heisenberg models by introducing a parameter x which controls the strength of the exchange parameter Jz = xJ along the z-axis with respect to the ones along the x- and y-axes, i.e. Jx = Jy = J, respectively. It is assumed that the two-qubit is entangled and in contact with two heat reservoirs at different temperatures and under the effect of a constant magnetic field. The concurrences (C) are used as a measure of entanglement and then the expressions for the amount of heat transferred, the work performed and the efficiency of the QHE are derived. The contour, i.e. the isoline maps, and some two-dimensional plots of the above mentioned thermodynamic quantities are calculated and some interesting features are found.

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