scholarly journals Electromagnetic fluctuation spectrum associated with the drift Alfvén-cyclotron instability

2012 ◽  
Vol 19 (7) ◽  
pp. 072318
Author(s):  
Kicheol Rha ◽  
Chang-Mo Ryu ◽  
Peter H. Yoon
Keyword(s):  
Fluctuation Spectrum ◽  
Cyclotron Instability ◽  
Electromagnetic Fluctuation

scholarly journals Unifying Theory for Casimir Forces: Bulk and Surface Formulations

Universe ◽  
2021 ◽  
Vol 7 (7) ◽  
pp. 225
Author(s):  
Giuseppe Bimonte ◽  
Thorsten Emig
Keyword(s):  
Free Energy ◽  
Path Integral ◽  
Casimir Force ◽  
Hamiltonian Formulation ◽  
Current Fluctuations ◽  
Practical Application ◽  
Casimir Forces ◽  
Surface Approach ◽  
Maxwell Stress Tensor ◽  
Electromagnetic Fluctuation

The principles of the electromagnetic fluctuation-induced phenomena such as Casimir forces are well understood. However, recent experimental advances require universal and efficient methods to compute these forces. While several approaches have been proposed in the literature, their connection is often not entirely clear, and some of them have been introduced as purely numerical techniques. Here we present a unifying approach for the Casimir force and free energy that builds on both the Maxwell stress tensor and path integral quantization. The result is presented in terms of either bulk or surface operators that describe corresponding current fluctuations. Our surface approach yields a novel formula for the Casimir free energy. The path integral is presented both within a Lagrange and Hamiltonian formulation yielding different surface operators and expressions for the free energy that are equivalent. We compare our approaches to previously developed numerical methods and the scattering approach. The practical application of our methods is exemplified by the derivation of the Lifshitz formula.

scholarly journals Dynamic regimes of cyclotron instability in the afterglow mode of minimum-Belectron cyclotron resonance ion source plasma

2016 ◽  
Vol 58 (4) ◽  
pp. 045019 ◽  
Author(s):  
D Mansfeld ◽  
I Izotov ◽  
V Skalyga ◽  
O Tarvainen ◽  
T Kalvas ◽  
...  
Keyword(s):  
Cyclotron Resonance ◽  
Ion Source ◽  
Cyclotron Instability

On the current-driven electrostatic ion-cyclotron instability: a review

1991 ◽  
Vol 19 (3) ◽  
pp. 457-501 ◽  
Author(s):  
J.J. Rasmussen ◽  
R.W. Schrittwieser
Keyword(s):  
Cyclotron Instability ◽  
Ion Cyclotron

Entropy maximum in a nonlinear system with the 1/f fluctuation spectrum

2011 ◽  
Vol 56 (11) ◽  
pp. 1539-1545 ◽  
Author(s):  
V. P. Koverda ◽  
V. N. Skokov
Keyword(s):  
Nonlinear System ◽  
Fluctuation Spectrum ◽  
Entropy Maximum
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