scholarly journals Testing general relativity with satellite laser ranging: Recent developments

2007 ◽  
Vol 39 (2) ◽  
pp. 236-243
Author(s):  
L. Iorio
Keyword(s):  
General Relativity ◽  
Satellite Laser Ranging ◽  
Laser Ranging ◽  
Recent Developments

NON-RIEMANNIAN THEORIES OF GRAVITY AND LUNAR AND SATELLITE LASER RANGING

1992 ◽  
Vol 07 (04) ◽  
pp. 843-852 ◽  
Author(s):  
IGNAZIO CIUFOLINI ◽  
RICHARD MATZNER
Keyword(s):  
General Relativity ◽  
Riemannian Manifold ◽  
Satellite Laser Ranging ◽  
Laser Ranging ◽  
Riemannian Spacetime ◽  
Theories Of Gravity ◽  
Alternative Gravity Theories ◽  
Gravity Theories ◽  
Einstein’S General Relativity ◽  
Alternative Gravity

Theories of gravity with a non-Riemannian manifold have been studied since the advent of Einstein's general relativity. In this paper, after an introduction on theories of gravity with a non-Riemannian spacetime and in particular on the nonsymmetric Moffat theory, we briefly describe the techniques of lunar and satellite laser ranging. Among the various applications of lunar and satellite laser ranging are several important measurements and tests of Einstein's general relativity as well as constraints on some alternative gravity theories. In particular, lunar and satellite laser ranging put strong validity limits on the 1983 nonsymmetric Moffat theory.

scholarly journals Satellite Laser-Ranging as a Probe of Fundamental Physics

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ignazio Ciufolini ◽  
Richard Matzner ◽  
Antonio Paolozzi ◽  
Erricos C. Pavlis ◽  
Giampiero Sindoni ◽  
...  
Keyword(s):  
General Relativity ◽  
Gravitational Field ◽  
Equivalence Principle ◽  
Free Fall ◽  
Satellite Laser Ranging ◽  
Laser Ranging ◽  
Weak Equivalence ◽  
Fundamental Physics ◽  
Weak Equivalence Principle ◽  
Gravitational Theories

Abstract Satellite laser-ranging is successfully used in space geodesy, geodynamics and Earth sciences; and to test fundamental physics and specific features of General Relativity. We present a confirmation to approximately one part in a billion of the fundamental weak equivalence principle (“uniqueness of free fall”) in the Earth’s gravitational field, obtained with three laser-ranged satellites, at previously untested range and with previously untested materials. The weak equivalence principle is at the foundation of General Relativity and of most gravitational theories.

scholarly journals Satellite laser ranging measurements in South Africa: Contributions to earth system sciences

2015 ◽  
Vol 111 (3/4) ◽  
pp. 1-9 ◽  
Author(s):  
Christina M. Botai ◽  
Ludwig Combrinck ◽  
Joel O. Botai
Keyword(s):  
South Africa ◽  
Satellite Laser Ranging ◽  
Laser Ranging ◽  
Earth System

scholarly journals QUANTUM GRAVITY BY THE COMPLEX CANONICAL FORMULATION

1992 ◽  
Vol 01 (03n04) ◽  
pp. 439-523 ◽  
Author(s):  
HIDEO KODAMA
Keyword(s):  
General Relativity ◽  
Quantum Gravity ◽  
Conventional Treatment ◽  
Quantum States ◽  
Hamiltonian Constraint ◽  
Canonical Formulation ◽  
Recent Developments ◽  
Canonical Approach ◽  
New Formulation ◽  
Basic Features

The basic features of the complex canonical formulation of general relativity and the recent developments in the quantum gravity program based on it are reviewed. The exposition is intended to be complementary to the review articles already available and some original arguments are included. In particular the conventional treatment of the Hamiltonian constraint and quantum states in the canonical approach to quantum gravity is criticized and a new formulation is proposed.

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