Results 1 to 10 of about 424,036 (273)
The Green-function transform and wave propagation [PDF]
Fourier methods well known in signal processing are applied to three-dimensional wave propagation problems. The Fourier transform of the Green function, when written explicitly in terms of a real-valued spatial frequency, consists of homogeneous and ...
Colin eSheppard +2 more
doaj +4 more sources
Inhomogeneous non-Gaussianity [PDF]
We propose a method to probe higher-order correlators of the primordial density field through the inhomogeneity of local non-Gaussian parameters, such as f_NL, measured within smaller patches of the sky.
+46 more
core +6 more sources
Inhomogeneous Anisotropic Cosmology
In homogeneous and isotropic Friedmann-Robertson-Walker cosmology, the topology of the universe determines its ultimate fate. If the Weak Energy Condition is satisfied, open and flat universes must expand forever, while closed cosmologies can recollapse ...
Kleban, Matthew, Senatore, Leonardo
core +2 more sources
Inhomogeneous tensionless superstrings [PDF]
We construct a novel tensionless limit of Superstring theory that realises the Inhomogeneous Super Galilean Conformal Algebra (SGCA I ) as the residual symmetry in the analogue of the conformal gauge, as opposed to previous constructions of the ...
Arjun Bagchi +3 more
doaj +3 more sources
Estimation of Electromagnetic Properties for 2D Inhomogeneous Media Using Neural Networks [PDF]
Electromagnetic measurements are widely used to gain information about an object through interaction of electromagnetic fields with the physical properties of this object.
Mohamed Elkattan, Aladin H. Kamel
doaj +1 more source
Rediscovering Clinical Utility of QT Dispersion: A Long-Forgotten Parameter [PDF]
Clinical and experimental electrophysiological studies have shown the importance of inhomogeneous myocardial repolarization in ventricular arrhythmias' genesis.
Denny Suwanto +2 more
doaj +1 more source
The Freedericksz Transition in a Spatially Varying Magnetic Field
Much is known about the Freedericksz transition induced by uniform electric and magnetic fields in nematic liquid crystals. In this work, we are interested in the effects of a spatially varying field on the transition. Specifically, we study the director
Tianyi Guo +2 more
doaj +1 more source
Exact and Approximate Solutions for Some Classes of the Inhomogeneous Pantograph Equation
The standard pantograph delay equation (SPDDE) is one of the famous delay models. This standard model is basically homogeneous in nature and it has been extensively studied in the literature. However, the studies on the general inhomogeneous form of such
A. A. Al Qarni
doaj +1 more source
We study the inhomogeneous cosmological evolution of the Newtonian gravitational 'constant' G in the framework of scalar-tensor theories. We investigate the differences that arise between the evolution of G in the background universes and in local inhomogeneities that have separated out from the global expansion. Exact inhomogeneous solutions are found
Clifton, T, Mota, DF, Barrow, JD
openaire +4 more sources
Ultra‐low frequency (ULF) wave observations across the heliosphere often rely on the sign of correlations between plasma (density/pressure) and magnetic field perturbations to distinguish between fast and slow magnetosonic modes. However, the assumptions
M. O. Archer +4 more
doaj +1 more source

