Results 11 to 20 of about 393,656 (164)

Practical challenges in data‐driven interpolation: Dealing with noise, enforcing stability, and computing realizations

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley   +1 more source

3D zeros in electromagnetic fields [PDF]

open access: yesOptica, 2023
We present a study of 3D electromagnetic field zeros, uncovering their remarkable characteristic features and propose a classifying framework. These are a special case of general dark spots in optical fields, which sculpt light’s spatial structure into matter-moving, information-rich vortices, escape the diffraction limit for ...
Alex J. Vernon   +2 more
openaire   +4 more sources

The Structure of an Electromagnetic Field [PDF]

open access: yesProceedings of the National Academy of Sciences, 1918
This elementary field corresponds to a state of affairs in which electric charges of a concentrated form are created and travel along straight lines with the velocity of light, the directions of these lines being specified by the different values of the unit vector s.
openaire   +4 more sources

Electromagnetic Neutrino Properties and Neutrino Oscillations in Electromagnetic Fields [PDF]

open access: yes, 1999
The presence of medium and external magnetic field change electromagnetic properties of neutrino. In this article the behavior of neutrino magnetic moment in electromagnetic field is considered.
A.E Lobanov   +35 more
core   +6 more sources

Photon creation in a spherical oscillating cavity [PDF]

open access: yes, 2006
We study the photon creation inside a perfectly conducting, spherical oscillating cavity. The electromagnetic field inside the cavity is described by means of two scalar fields which satisfy Dirichlet and (generalized) Neumann boundary conditions.
C. M. Bender   +6 more
core   +2 more sources

Electromagnetic Force on a Brane

open access: yes, 2016
A fundamental assumption in the theory of brane world is that all matter and radiation are confined on the four-dimensional brane and only gravitons can propagate in the five-dimensional bulk spacetime.
Li, Li-Xin
core   +1 more source

Emergent Abelian Gauge Fields from Noncommutative Gravity [PDF]

open access: yes, 2010
We construct exact solutions to noncommutative gravity following the formulation of Chamseddine and show that they are in general accompanied by Abelian gauge fields which are first order in the noncommutative scale.
Stern, Allen
core   +4 more sources

Understanding possible electromagnetic counterparts to loud gravitational wave events: Binary black hole effects on electromagnetic fields

open access: yes, 2009
In addition to producing loud gravitational waves (GW), the dynamics of a binary black hole system could induce emission of electromagnetic (EM) radiation by affecting the behavior of plasmas and electromagnetic fields in their vicinity.
Carlos Palenzuela   +7 more
core   +1 more source

Pseudo-electromagnetic fields in topological semimetals

open access: yes, 2019
Dirac and Weyl semimetals, materials where electrons behave as relativistic fermions, react to position- and time-dependent perturbations, such as strain, as if emergent electromagnetic fields were applied. Since they differ from external electromagnetic
Grushin, Adolfo G.   +2 more
core   +2 more sources

Relativistically expanding cylindrical electromagnetic fields

open access: yes, 2009
We study relativistically expanding electromagnetic fields of cylindrical geometry. The fields emerge from the side surface of a cylinder and are invariant under translations parallel to the axis of the cylinder.
Aly   +28 more
core   +1 more source

Home - About - Disclaimer - Privacy