منابع مشابه
Brans-Dicke theory with the cosmological constant from M4 × Z2 geometry
The theory on M4 × Z2 geometry is applied to the Einstein gravity to yield the BransDicke theory on M4 geometry. The geometrical meaning and the relation between the curvatures and the torsions are clarified. The cosmological constant is also introduced into the pure Einstein action on M4 ×Z2 in order to determine the explicit form of the cosmological term in the Brans-Dicke theory on M4 geomet...
متن کاملJordan, Brans-Dicke theory.
Properties of the static, spherically symmetric solutions in the Jordan, Brans-Dicke theory. ABSTRACT. We have studied the properties of the static, spherically symmetric solution of Jordan, Brans-Dicke theory. An exact interior solution for standard space-time line element in the Schwarzschild form is obtained.
متن کاملBrans - Dicke Theory on M 4 × Z 2 Geometry
The gauge theory on M4 ×Z2 geometry is applied to the Brans-Dicke(BD) theory, where M4 is the four dimensional space-time and Z2 is a discrete space with two points. This approach had been previously proposed by Konisi and Saito without recourse to noncommutative geometry(NCG). Since our approach is geometrically simpler and clearer than NCG, one can see more directly the effect of the Z2 space...
متن کاملBlack hole area in Brans-Dicke theory.
We have shown that the dynamics of the scalar field φ(x) = “G−1(x)” in BransDicke theories of gravity makes the surface area of the black hole horizon oscillatory during its dynamical evolution. It explicitly explains why the area theorem does not hold in Brans-Dicke theory. However, we show that there exists a certain non-decreasing quantity defined on the event horizon which is proportional t...
متن کاملVacuumless cosmic strings in Brans - Dicke theory
The gravitational fields of vacuumless global and gauge string have been studied in Brans-Dicke theory under the weak field assumption of the field equations. It has been shown that the global vacuumless string has a repulsive gravitational effect whereas the gauge string has an attractive gravitational effect in BD theory.
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1998
ISSN: 0033-068X,1347-4081
DOI: 10.1143/ptp.99.293