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SEMICLASSICAL VIOLATION of THE EQUIVALENCE PRINCIPLE IN THE GRAVITATIONAL LENSES REALM
(World Scientific Publ Co Pte Ltd, 2009-12-31)
An expression for the gravitational deflection angle of a high-energy massless scalar boson is computed using the JWKB method. The resulting expression depends on the energy of the scalar boson or, equivalently, on its ...
Gravitational field of a straight cosmic string in the framework of higher-derivative gravity
(2008-08-10)
The gravitational properties of a straight cosmic string are studied in the linear approximation of higher-derivative gravity. These properties are shown to be very different from those found using linearized Einstein ...
Nonlinear Gravitational Waves: Their Form and Effects
(Springer/plenum Publishers, 2010-03-01)
A gravitational wave must be nonlinear to be able to transport its own source, that is, energy and momentum. A physical gravitational wave, therefore, cannot be represented by a solution to a linear wave equation. Relying ...
Gravitation without the equivalence principle
(Kluwer Academic/plenum Publ, 2004-01-01)
In the general relativistic description of gravitation, geometry replaces the concept of force. This is possible because of the universal character of free fall, and would break down in its absence. on the other hand, the ...
Gravitation and duality symmetry
(World Scientific Publ Co Pte Ltd, 2005-09-01)
By generalizing the Hodge dual operator to the case of soldered bundles, and working in the context of the teleparallel equivalent of general relativity, an analysis of the duality symmetry in gravitation is performed. ...
Gravitation as anholonomy
(Kluwer Academic/plenum Publ, 2003-06-01)
A gravitational field can be seen as the anholonomy of the tetrad fields. This is more explicit in the teleparallel approach, in which the gravitational field-strength is the torsion of the ensuing Weitzenbock connection. ...
The nonlinear essence of gravitational waves
(Springer, 2007-10-01)
A critical review of gravitational wave theory is made. It is pointed out that the usual linear approach to the gravitational wave theory is neither conceptually consistent nor mathematically justified. Relying upon that ...
Gravitational Lorentz force and the description of the gravitational interaction
(1997-10-15)
In the context of a gauge theory for the translation group, we have obtained, for a spinless particle, a gravitational analogue of the Lorentz force. Then, we have shown that this force equation can be rewritten in terms ...
Photon mass and gravitational deflection
(American Physical Soc, 2004-05-01)
The deflection of a massive photon by an external gravitational field is energy-dependent. Interesting enough, any massive quantum particle, no matter what its spin is, undergoes dispersive deflection in external gravitational ...