scholarly journals Time-dependent meson melting in an external magnetic field

2015 ◽  
Vol 91 (10) ◽  
Author(s):  
M. Ali-Akbari ◽  
F. Charmchi ◽  
A. Davody ◽  
H. Ebrahim ◽  
L. Shahkarami
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Time Dependent

Time-dependent topological Chern-Simons solitons in external magnetic field

1991 ◽  
Vol 44 (12) ◽  
pp. 3906-3910 ◽  
Author(s):  
Z. F. Ezawa ◽  
M. Hotta ◽  
A. Iwazaki
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Time Dependent ◽  
Chern Simons

Dynamics of vortex–antivortex creation and annihilation in current-driven mesoscopic superconducting squares

2015 ◽  
Vol 29 (35n36) ◽  
pp. 1550247
Author(s):  
Xiao-Meng Liang ◽  
Guo-Qiao Zha
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Landau Theory ◽  
Symmetric Case ◽  
Time Dependent ◽  
Dynamical Process ◽  
Applied Bias ◽  
Ginzburg Landau ◽  
Dc Drive ◽  
Vortex Velocity

In this paper, based on the time-dependent Ginzburg–Landau theory, we study the dynamics of vortex–antivortex (V–Av) pairs in a mesoscopic superconducting square with a small hole under applied bias currents. For the sample with a centered hole, a V–Av pair can nucleate at the hole edges and moves in opposite directions perpendicular to applied constant DC drive. The influence of the external magnetic field on the (anti)vortex velocity and the lifetime of V–Av pairs is mainly investigated. Different modes in the dynamical process of the V–Av collision and annihilation are identified. Moreover, in the case when the hole is displaced from the center of the square, the V–Av dynamics behaves quite differently from the symmetric case due to the shift of the V–Av creation point.

Multilevel Spin Dynamics in Time-Dependent External Magnetic Field

2006 ◽  
Vol 26 (1-2) ◽  
pp. 47-54
Author(s):  
Péter Földi ◽  
Mihály G. Benedict ◽  
Francois M. Peeters
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Spin Dynamics ◽  
Time Dependent

GEOMETRIC PHASE IN THE CONDENSED VAPOR OF Rb UNDER PRESSURE AND EXTERNAL MAGNETIC FIELD

2010 ◽  
Vol 24 (17) ◽  
pp. 1869-1875
Author(s):  
ZHAO-XIAN YU ◽  
ZHI-YONG JIAO ◽  
XIANG-GUI LI
Keyword(s):  
Magnetic Field ◽  
Atomic Nucleus ◽  
External Magnetic Field ◽  
Invariant Theory ◽  
Geometric Phase ◽  
Time Dependent ◽  
Coupling Constant ◽  
External Time

By using the Lewis–Riesenfeld invariant theory, we have studied the geometric phase in the condensed vapor of Rb under pressure and external time-dependent magnetic field. We find that the geometric phase in the cycle case has nothing to do with the coupling constant between electron and atomic nucleus, and the external time-dependent magnetic field.

scholarly journals Released power in a vortex-antivortex pairs annihilation process

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Cristian Aguirre-Tellez ◽  
Miryam Rincón-Joya ◽  
José José Barba-Ortega
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Diffusion Equation ◽  
Power Dissipation ◽  
Time Dependent ◽  
Thermal Dissipation ◽  
Annihilation Process ◽  
Ginzburg Landau ◽  
Dissipation Process ◽  
Ginzburg Landau Equations

In this paper, we studied the power dissipation process of a Shubnikov vortex-antivortex pair in a mesoscopic superconducting square sample with a concentric square defect in presence of an oscillatory external magnetic field. The time-dependent Ginzburg-Landau equations and the diffusion equation were numerically solved. The significant result is that the thermal dissipation is associated with a sizeable relaxation of the superconducting electrons, so that the power released in this kind of process might become calculated as a function of the time. Also, we analyzed the effect that the Ginbzurg-Landau κand deformation τparameters have on the magnetization, dissipate power and super-electrons density.

Proximity effect enhancement induced by a superconducting anti-dot

2014 ◽  
Vol 28 (31) ◽  
pp. 1450242
Author(s):  
Sindy J. Higuera ◽  
Miryam R. Joya ◽  
J. Barba-Ortega
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Proximity Effect ◽  
Magnetization Curve ◽  
Order Parameter ◽  
Proximity Effects ◽  
Time Dependent ◽  
Critical Fields ◽  
Ginzburg Landau ◽  
Ginzburg Landau Equations

In this work, we study the proximity and pinning effects of a rectangular superconducting anti-dot on the magnetization curve of a mesoscopic sample. We solve the nonlinear time-dependent Ginzburg–Landau equations for a superconducting rectangle in the presence of a magnetic field applied perpendicular to its surface. The pinning effects are determined by the number of vortices into the anti-dot. We calculate the order parameter, vorticity, magnetization and critical fields as a function of the external magnetic field. We found that the size and nature of the anti-dot strongly affect the magnetization of the sample. The results are discussed in framework of pinning and proximity effects in mesoscopic systems.

Entanglement of Two Coupled Atoms in the Presence of a Time-Dependent External Magnetic Field

2016 ◽  
Vol 37 (1) ◽  
pp. 10-22 ◽  
Author(s):  
M. Sebawe Abdalla ◽  
E. M. Khalil ◽  
A. S.-F. Obada ◽  
S. Sanad
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Time Dependent
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