Results 71 to 80 of about 1,764,811 (237)

Large N vector quantum mechanics and bubbling supertube solutions

open access: yes, 2005
We propose a large N vector quantum mechanics as the theory describing a D-particle probe in bubbling supertube solutions. We compute the effective action of this quantum mechanics and show that it coincides with the D-particle action in a certain ...
Imamura, Yosuke
core   +4 more sources

Rigorous Electromagnetic Quasinormal‐Mode Method Made Easy for Users

open access: yesLaser &Photonics Reviews, EarlyView.
We present a method that combines numerical techniques with accurate approximations to enable simple and ultrafast computations of the scattered field based on quasinormal modes expansions. The method is made available in the open‐source package MANlite implemented within COMSOL.
Tong Wu, Philippe Lalanne
wiley   +1 more source

The Photospheric Poynting Flux and Coronal Heating [PDF]

open access: yes, 2014
Some models of coronal heating suppose that convective motions at the photosphere shuffle the footpoints of coronal magnetic fields and thereby inject sufficient magnetic energy upward to account for observed coronal and chromospheric energy losses in ...
Welsch, B. T.
core   +1 more source

Topological Photonic Devices and Circuits at Terahertz Frequencies

open access: yesLaser &Photonics Reviews, EarlyView.
This review examines how 3D topological insulators and emerging topological photonic phases enable robust, low‐loss and defect‐immune terahertz devices. Fundamental properties, device implementations and topological transport mechanisms are surveyed, revealing new opportunities for reconfigurable, high‐performance THz components and scalable ...
Samane Kalhor   +3 more
wiley   +1 more source

Determining the Wave Vector Direction of Equatorial Fast Magnetosonic Waves

open access: yesGeophysical Research Letters, 2018
We perform polarization analysis of the equatorial fast magnetosonic waves electric field over a 20‐min interval of Van Allen Probes A waveform receiver burst mode data.
Scott A. Boardsen   +6 more
doaj   +1 more source

Scattering forces on magneto-dielectric particles and the electromagnetic momentum density

open access: yesAdvanced Electromagnetics, 2013
In this paper we analyze the non-conservative forces on  magneto-dielectric particles in special configurations where  the scattering force is not proportional to the average value  of the Poynting vector.
M. I. Marques, J. J. Saenz
doaj   +1 more source

Energy radiation of moving cracks

open access: yes, 2001
The energy radiated by moving cracks in a discrete background is analyzed. The energy flow through a given surface is expressed in terms of a generalized Poynting vector. The velocity of the crack is determined by the radiation by the crack tip.
A. Karma   +46 more
core   +1 more source

EMIC Waves in the Outer Magnetosphere: Observations of an Off-Equator Source Region. [PDF]

open access: yes, 2019
Electromagnetic ion cyclotron (EMIC) waves at large L shells were observed away from the magnetic equator by the Magnetospheric MultiScale (MMS) mission nearly continuously for over four hours on 28 October 2015.
B. J. Anderson   +12 more
core   +1 more source

Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities

open access: yesLaser &Photonics Reviews, EarlyView.
The proposed in‐situ metrology based on mode splitting quantifies the ultralow backscattering of topological valley edge states at a single sharp corner, demonstrating near‐lossless topological transport (0.09 dB/corner) on a silicon chip. This work provides insight into the robustness of the photonic valley system and shows the great potential of ...
Kaiji Chen   +5 more
wiley   +1 more source

Revisiting optical absorption power density of inhomogeneous plane waves

open access: yesResults in Optics
We review the analytical expressions for the complex Poynting’s vector in the case of arbitrary plane-waves in a lossy isotropic medium. We demonstrate how these expressions can be used to recover the optical absorption power density Q, considering the ...
Aurelien Bruyant   +2 more
doaj   +1 more source

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