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84 papers · 1 filter
Nonlocal General Relativity
B. Mashhoon
A brief account of the present status of the recent nonlocal generalization of Einstein's theory of gravitation is presented. The main physical assumptions that underlie this theor…
Optical cavity resonator in an expanding universe
Sergei Kopeikin
We study evolution of frequency of a standing electromagnetic (EM) wave in a resonant optical cavity placed to the expanding manifold described by the Robertson-Walker metric. One…
Baryon Content of Massive Galaxy Clusters (0.57 < z < 1.33)
I. Chiu, J. Mohr, M. Mcdonald +22
We study the stellar, Brightest Cluster Galaxy (BCG) and intracluster medium (ICM) masses of 14 South Pole Telescope (SPT) selected galaxy clusters with median redshift and…
Irreducible decompositions of the elasticity tensor under the linear and orthogonal groups and their physical consequences
Yakov Itin, Friedrich W. Hehl
We study properties of the fourth rank elasticity tensor C within linear elasticity theory. First C is irreducibly decomposed under the linear group into a "Cauchy piece" S (with 1…
Dust and Gas in the Magellanic Clouds from the HERITAGE Herschel Key Project. II. Gas-to-Dust Ratio Variations across ISM Phases
Julia Roman-Duval, Karl Gordon, Margaret Meixner +32
The spatial variations of the gas-to-dust ratio (GDR) provide constraints on the chemical evolution and lifecycle of dust in galaxies. We examine the relation between dust and gas…
Towards exact relativistic theory of Earth's geoid undulation
Sergei Kopeikin, Elena Mazurova, Alexander Karpik
The present paper extends the Newtonian concept of the geoid in classic geodesy towards the realm of general relativity by utilizing the covariant geometric methods of the perturba…