Results 261 to 270 of about 166,028,825 (289)

The increased drift of steep focusing surface gravity waves. [PDF]

J Fluid Mech
Blaser A, Lenain L, Pizzo N.
europepmc   +1 more source

Midwives' Physiological Approach at the Third Stage of Labour: A Scoping Review. [PDF]

Birth
Tarlazzi E, Berini V, Brevi L, Ferrandino R, Tormen M, Parma D, Cappadona R, Fumagalli S, Nespoli A, Simonazzi G.   +9 more
europepmc   +1 more source

Comparing the motion of dark matter and standard model particles on cosmological scales. [PDF]

Nat Commun
Grimm N, Bonvin C, Tutusaus I.
europepmc   +1 more source

ENTROPY FORCE AND SELF-GRAVITY FACTOR OF MODIFIED GRAVITY THEORIES

Modern Physics Letters A, 2011
We investigate the entropy force of modified gravity theories on trapping horizons. It is shown that if the entropy force is separated as a uniform term from the variation of entropy, the associated self-gravity factor is not the simple two in Einstein gravity but is different for various gravity theories.
Zhu, Shu, Wu, Shao-Feng, Yang, Guo-Hong
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Thermodynamics of Modified Theories of Gravity [PDF]

, 2010
VCU Theses and ...
Hackebill, Aric
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Testing theories of modified gravity

Physics Today, 2017
With further refinement, observations of supermassive black holes could test the presence of a universal scalar field. With further refinement, observations of supermassive black holes could test the presence of a universal scalar field.
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An extended theory of gravity in a modified Riemann’s geometry

International Journal of Geometric Methods in Modern Physics, 2019
In this work, we study the evolution of an isotropic universe in an extended theory of gravity obtained geometrically by transforming the normal-gauge Lyra displacement vector field [Formula: see text] as a complex vectorial function depending on a dynamical scalar field [Formula: see text]. By using the latest observational data, we observe that for [
Hoavo Hova, Huanxiong Yang, Samuel Owusu
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ON IMPLICATIONS OF EQUIVALENCE PRINCIPLE FOR MODIFIED GRAVITY THEORIES

International Journal of Modern Physics D, 2011
One of the manifestations of Einstein Equivalence Principle (EEP) is that a freely falling particle in a gravitational field is following a geodesic. In Einstein's general relativity (GR) this is built in the formulation by assuming the connection to be the Levi-Civita connection. The latter may, however, be demanded to be implied by the dynamics of a
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Cosmology in Modified Theories of Gravity

2019
The purpose of this dissertation is to present the most typical modified theories of gravity and discuss their validity and viability in constructing a cosmological model. Current issues in cosmology, related to the Standard Cosmological model, i.e.
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