When the cosmological constant of spacetime is derived from the 5D inducedmatter theory of gravity, we show that a simple gauge transformation changes it to a variable measure of the vacuum which is infinite at the big bang and decays to an astrophysically acceptable value at late epochs. We outline implications of this for cosmology and galaxy formation. PACS numbers: 04.20.Cv, 04.50.+h, 98.62...

generally, gravity anomaly is the difference between the observed acceleration of earth's gravity and a normal value. topography (all masses above geoid) plays a main role in definition of the gravity anomaly. based on modeling of the effect of topography, there are different models of gravity anomaly such as free-air and bouguer anomaly. the main goal of the bouguer anomaly is removing of...

The time evolution of black holes involves both the canonical equations of quantum gravity and the statistical mechanics of Hawking radiation, neither of which contains a time variable. In order to introduce the time, we apply the semiclassical approximation to the Hamiltonian constraint on the apparent horizon and show that, when the backreaction is included, it suggests the existence of a lon...

We investigate 2d gravity quantized in the ADM formulation, where only the loop length l(z) is retained as a dynamical variable of the gravitation, in order to get an intuitive physical insight of the theory. The effective action of l(z) is calculated by adding scalar fields of conformal coupling, and the problems of the critical dimension and the time development of l are addressed. ∗ e-mail a...

The purpose of this paper is to illustrate the problem energy and momentum distributions Van Stockum space-time within framework two different theories gravity, general relativity teleparallel gravity. We have shown that for all homogeneous space-times with metric components $g_{\mu\nu}$ being functions time variable, $t$, alone independent space variables total gravitational any finite volume ...

in this paper, a new formula is applied for the calculation of gravity anomalies from a cylinder model representing a geological body. compared to conventional methods, this new development allows the cylinder to be freely oriented in space. 38 gravity forward models are produced each of which anomaly attributes are calculated. then a linear relationship is established between attributes and so...

We develop the gauge approach based on the Lorentz group to the gravity with torsion. With a Lagrangian quadratic in curvature we show that the Einstein-Hilbert action can be induced from a simple gauge model due to quantum corrections of torsion via formation of a gravito-magnetic condensate. An effective theory of cosmic knots at Planckian scale is proposed. 1. Utiyama-Kibble-Sciama gauge app...

This paper explores a passive control strategy with variable stiffness actuation for swing movements. We consider brachiation as an example of a highly dynamic task which requires exploitation of gravity in an efficient manner for successful task execution. First, we present our passive control strategy considering a pendulum with variable stiffness actuation. Then, we formulate the problem bas...

We study the virtual photon structure functions from gauge/string duality. If the Bjorken variable x is not small, supergravity approximation becomes good in dual string theory. We calculate the virtual photon structure functions at large ’t Hooft coupling in a moderate x-region and determine x-behavior of the structure functions. We also show that the Callan-Gross relation FL = 0 is satisfied ...