scholarly journals Currents in a Quantum Nanoring Controlled by Non-Classical Electromagnetic Field

Entropy ◽  
2021 ◽  
Vol 23 (6) ◽  
pp. 652
Author(s):  
Jerzy Dajka
Keyword(s):  
Electromagnetic Field ◽  
Magnetic Flux ◽  
Coulomb Interaction ◽  
Persistent Current ◽  
Quantum Ring ◽  
Driving Field

Quantum ring accommodating interacting spin-less fermions threaded by magnetic flux with a non-classical component added to a static, inducing persistent current, is considered. It is investigated how current flowing in the ring becomes affected by a state of non-classical flux and how Coulomb interaction between fermions influences entanglement of quantum ring and the driving field. In particular it is shown that in an absence of decoherence and under certain conditions fermion–fermion interaction is necessary for a ring–field entanglement to occur.

TRANSMISSION PROBABILITY AND PERSISTENT CURRENT IN AN OPEN AHARONOV–BOHM RING

2012 ◽  
Vol 26 (06) ◽  
pp. 1150033 ◽  
Author(s):  
JIAN-DUO LU ◽  
BIN XU ◽  
WEI ZHENG
Keyword(s):  
Magnetic Flux ◽  
Wave Vector ◽  
Transmission Probability ◽  
Numerical Results ◽  
Persistent Current ◽  
Quantum Ring ◽  
Central Angle ◽  
Open Quantum ◽  
Periodic Characteristic ◽  
Aharonov Bohm

We theoretically investigate the transmission probability and the persistent current in an open quantum ring threaded by the magnetic flux. From the numerical results, we find that the two observable quantities both show a periodic characteristic with the increase of the magnetic flux, and they strongly depend on the dimensionless wave vector and the central angle as well as the magnetic flux.

scholarly journals Biological Effects of a Low-Frequency Electromagnetic Field on Yeast Cells of the Genus Saccharomyces Cerevisiae

2021 ◽  
Vol 21 (2) ◽  
pp. 34-41
Author(s):  
K Sladicekova ◽  
M Bereta ◽  
J Misek ◽  
D Parizek ◽  
J Jakus
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Electromagnetic Field ◽  
Magnetic Flux ◽  
Flux Density ◽  
Biological Effects ◽  
Low Frequency ◽  
Growth Dynamics ◽  
Yeast Cells ◽  
Magnetic Flux Density ◽  
Time Points

Abstract Background: Although the scientific community is extensively concerned with the effects of the EMF, the unambiguous explanation of its effects on living structures is still lacking. Goals: The goal of the study was to evaluate the effect of a low-frequency (LF) electromagnetic field (EMF) on the growth and multiplication of the yeast Saccharomyces cerevisiae. Methods: Yeast cells were exposed to a frequency of 900 Hz and a magnetic flux density of 2.3 mT. The duration of each experiment was 8 hours, in the beginning of the measurement the value of frequency, rms (root mean square) value of electric current (2 A), and magnetic flux density were fixed set on the exposure device. A paired experiment was performed, a sample exposed to EMF, and a sample shielded from the field. Subsequently, samples were taken every two hours, the number of cells was recorded, and then the concentration of the yeast cells was evaluated at time points. The time points reflected the exposure time of the samples exposed to EMF. Results: The results indicate that LF EMF at given parameters has an inhibitory effect on the growth and multiplication of yeast cells. Conclusion: Exposure to EMF can cause the differences in growth dynamics between cells exposed to the field and the unexposed ones.

ANSYS Simulation Technology of Pipeline Magnetic Flux Leakage Inspection

2013 ◽  
Vol 718-720 ◽  
pp. 1000-1005
Author(s):  
Li Jian Yang ◽  
Sen Lin Zhang ◽  
Song Wei Gao
Keyword(s):  
Magnetic Field ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Magnetic Flux ◽  
Oil And Gas ◽  
Gas Pipeline ◽  
Magnetic Flux Leakage ◽  
Field Calculation ◽  
Inspection Method ◽  
Flux Leakage

In order to solve the need of the oil and gas pipeline defect quantification in the real-time online defecting, magnetic flux leakage inspection method was applied to oil and gas pipeline inspection. According to the basic theory of the electromagnetic field, finite element solution of electromagnetic field and ANSYS electromagnetic field calculation theory, using the function of ANSYS 's simulation and calculation for magnetic field, three-dimensional finite element model of the oil and gas pipeline defect was built up. Through simulating, the relationship between defect signal and defect size was found, the optimal distance of the hall sensor lift-off value was verified, the best magnetization of leakage magnetic field was discussed, and various factors to influence the magnetic flux leakage signal is analyzed.

Electron-electron interaction and the persistent current in a quantum ring

1994 ◽  
Vol 50 (12) ◽  
pp. 8460-8468 ◽  
Author(s):  
Tapash Chakraborty ◽  
Pekka Pietiläinen
Keyword(s):  
Persistent Current ◽  
Electron Interaction ◽  
Quantum Ring

scholarly journals Persistent current induced by vacuum fluctuations in a quantum ring

2013 ◽  
Vol 87 (24) ◽  
Author(s):  
O. V. Kibis ◽  
O. Kyriienko ◽  
I. A. Shelykh
Keyword(s):  
Persistent Current ◽  
Quantum Ring ◽  
Vacuum Fluctuations

scholarly journals Tunneling coefficient and persistent current in triple-arm quantum ring with double δ　barrier

2009 ◽  
Vol 58 (11) ◽  
pp. 7926
Author(s):  
Du Jian ◽  
Wang Su-Xin ◽  
Yang Shu-Min
Keyword(s):  
Persistent Current ◽  
Quantum Ring
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