Chaotic dynamics and basin erosion in nanomagnets subject to time-harmonic magnetic fields

2016 ◽  
Vol 486 ◽  
pp. 121-125 ◽  
Author(s):  
M. d'Aquino ◽  
A. Quercia ◽  
C. Serpico ◽  
G. Bertotti ◽  
I.D. Mayergoyz ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Chaotic Dynamics ◽  
Time Harmonic ◽  
Basin Erosion

Quantum chaos and statistical properties of energy levels for atom in parallel electric and magnetic fields

2015 ◽  
Vol 29 (35n36) ◽  
pp. 1550248
Author(s):  
Hai-Feng Yang ◽  
Yong-Gang Tan ◽  
Zhong-Li Liu ◽  
Hong-Zhi Fu
Keyword(s):  
Magnetic Fields ◽  
Quantum Chaos ◽  
Chaotic Dynamics ◽  
Nearest Neighbor ◽  
Energy Levels ◽  
Statistical Properties ◽  
The Core ◽  
Ideal System ◽  
Electric And Magnetic Fields ◽  
Diagonalization Method

In this paper, the statistical properties of energy levels are studied numerically for atom in parallel electric and magnetic fields, which is an ideal system to examine the contributions of external fields and ionic core to quantum chaos. The Stark maps of diamagnetic spectra and nearest neighbor spacing (NNS) distributions are obtained by diagonalization method incorporating core effect. We identify obvious level anti-crossing and large value of [Formula: see text] for barium, indicating that core effect has predominant contribution to chaotic dynamics in barium. To study the core effect in detail, we sweep the quantum defect artificially and find that larger core effect will undoubtedly induce stronger chaotic dynamics.

Mode-filtering analysis of space and time harmonic wave components of magnetic fields in rotating machinery

2010 ◽  
Vol 172 (2) ◽  
pp. 55-63
Author(s):  
Kenji Miyata ◽  
Kazumasa Ide ◽  
Kazuo Shima
Keyword(s):  
Magnetic Fields ◽  
Harmonic Wave ◽  
Rotating Machinery ◽  
Space And Time ◽  
Time Harmonic

Chaotic dynamics and primary resonance analysis of a curved carbon nanotube considering influence of thermal and magnetic fields

2019 ◽  
Vol 41 (7) ◽  
Author(s):  
H. Ramezannejad Azarboni ◽  
M. Rahimzadeh ◽  
H. Heidari ◽  
H. Keshavarzpour ◽  
S. A. Edalatpanah
Keyword(s):  
Carbon Nanotube ◽  
Magnetic Fields ◽  
Chaotic Dynamics ◽  
Primary Resonance ◽  
Resonance Analysis

Mode-Filtering Analysis Method of Space and Time Harmonic Wave Components of Magnetic Fields in Rotating Machinery

2008 ◽  
Vol 128 (4) ◽  
pp. 516-522 ◽  
Author(s):  
Kenji Miyata ◽  
Kazumasa Ide ◽  
Kazuo Shima
Keyword(s):  
Magnetic Fields ◽  
Harmonic Wave ◽  
Rotating Machinery ◽  
Analysis Method ◽  
Space And Time ◽  
Time Harmonic

Chaotic dynamics of ballistic electrons in lateral superlattices and magnetic fields

1990 ◽  
Vol 64 (13) ◽  
pp. 1581-1584 ◽  
Author(s):  
T. Geisel ◽  
J. Wagenhuber ◽  
P. Niebauer ◽  
G. Obermair
Keyword(s):  
Magnetic Fields ◽  
Chaotic Dynamics ◽  
Lateral Superlattices

scholarly journals Dynamical Systems and Topology of Magnetic Fields in Conducting Medium

2017 ◽  
Vol 63 (3) ◽  
pp. 455-474
Author(s):  
V Z Grines ◽  
E V Zhuzhoma ◽  
O V Pochinka
Keyword(s):  
Dynamical Systems ◽  
Magnetic Fields ◽  
Chaotic Dynamics ◽  
Vector Fields ◽  
Field Model ◽  
Physical Models ◽  
Hyperbolic Dynamics ◽  
And Topology ◽  
Magnetic Field Model ◽  
Basic Sets

We discuss application of contemporary methods of the theory of dynamical systems with regular and chaotic hyperbolic dynamics to investigation of topological structure of magnetic fields in conducting media. For substantial classes of magnetic fields, we consider well-known physical models allowing us to reduce investigation of such fields to study of vector fields and Morse-Smale diffeomorphisms as well as diffeomorphisms with nontrivial basic sets satisfying the A axiom introduced by Smale. For the point-charge magnetic field model, we consider the problem of separator playing an important role in the reconnection processes and investigate relations between its singularities. We consider the class of magnetic fields in the solar corona and solve the problem of topological equivalency of fields in this class. We develop a topological modification of the Zeldovich funicular model of the nondissipative cinematic dynamo, constructing a hyperbolic diffeomorphism with chaotic dynamics that is conservative in the neighborhood of its transitive invariant set.

Calculated Coronal Magnetic Fields and Their Comparison with the Coronal Structures as Observed during Five Solar Eclipses

1994 ◽  
Vol 144 ◽  
pp. 559-564
Author(s):  
P. Ambrož ◽  
J. Sýkora
Keyword(s):  
Magnetic Field ◽  
Solar Cycle ◽  
Magnetic Fields ◽  
Solar Corona ◽  
Coronal Magnetic Field ◽  
Coronal Magnetic Fields ◽  
Solar Eclipses ◽  
Coronal Structures

AbstractWe were successful in observing the solar corona during five solar eclipses (1973-1991). For the eclipse days the coronal magnetic field was calculated by extrapolation from the photosphere. Comparison of the observed and calculated coronal structures is carried out and some peculiarities of this comparison, related to the different phases of the solar cycle, are presented.

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