Results 111 to 120 of about 591,643 (217)

The Gravity of Light

open access: yes, 2023
The gravitational field of an idealized plane-wave solution of the Maxwell equations can be described in closed form. After discussing this particular solution of the Einstein-Maxwell equations, the motion of neutral test particles, which are sensitive only to the gravitational background field, is analyzed. This is followed by a corresponding analysis
openaire   +2 more sources

Time and Gravity

open access: yesKronoScope, 2019
AbstractSeveral physical concepts, including the concept of time, are clarified herein by taking into account existing experimental data. In addition, the missing links among these physical concepts are established. This allows us to take another step towards understanding the physical nature of time.
openaire   +3 more sources

The Speed of Gravity

open access: yes, 2019
Within the standard effective field theory of General Relativity, we show that the speed of gravitational waves deviates, ever so slightly, from luminality on cosmological and other spontaneously Lorentz-breaking backgrounds. This effect results from loop contributions from massive fields of any spin, including Standard Model fields, or from tree level
Rham, CD, Tolley, AJ
openaire   +3 more sources

International trade and monopolistic competition without CES : estimating translog gravity [PDF]

open access: yes, 2010
This paper derives a micro-founded gravity equation in general equilibrium based on a translog demand system that allows for endogenous markups and rich substitution patterns across goods.
Novy, Dennis
core  

Analytic approximate charged black hole solutions in Einstein–quartic gravity

open access: yesFrontiers in Astronomy and Space Sciences
In this work, we employ continued fraction expansions to derive analytical, approximate charged black hole solutions in Einstein–Maxwell–quartic gravity, a theory that introduces quartic curvature corrections to the Einstein–Hilbert action.
Supakchai Ponglertsakul   +2 more
doaj   +1 more source

Holography and causality in the Karch-Randall braneworld

open access: yesJournal of High Energy Physics
It has been argued that the existence of a geodesic shortcut in the Karch-Randall (KR) braneworld rules out the possibility for a low-energy intermediate theory, even when gravity is turned off.
Hao Geng, Lisa Randall
doaj   +1 more source

Crustal structure of the spreading plate boundary in Iceland and the north Atlantic from gravity data [PDF]

open access: yes, 1994
Gravity datasets from two geothermal areas in Iceland, an Iceland-wide gravity dataset, and marine gravity data from the Reykjanes Ridge at 58˚N, which can be seen as the submarine extension of the Icelandic accretionary system, have been studied in this
Field, Paul R.
core  

Algebraic Approach to Quantum Gravity: relative realism [PDF]

open access: yes, 2007
In the first of three articles, we review the philosophical foundations of an approach to quantum gravity based on a principle of representation-theoretic duality and a vaguely Kantian-Buddist perspective on the nature of physical reality which I have ...
Majid, Shahn
core  

Stochastic Gravity

open access: yesInternational Journal of Theoretical Physics, 1999
Latex 35 pages, to be published in Int. J. Theor. Phys. (1999)
openaire   +3 more sources

Krylov complexity for Jacobi coherent states

open access: yesJournal of High Energy Physics
We develop computational tools necessary to extend the application of Krylov complexity beyond the simple Hamiltonian systems considered thus far in the literature.
S. Shajidul Haque   +3 more
doaj   +1 more source

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