Exact solutions related to nonminimal gravitational coupling
نویسندگان
چکیده
منابع مشابه
Nonminimal coupling, equivalence principle and exact Foldy-Wouthuysen transformation
It is shown that the exact Foldy-Wouthuysen transformation for spin-0 particles on spacetimes described by the metrics ds = V dt −W dx, where V = V (x) and W = W (x), only exists if the scalar field is nonminimally coupled to the Ricci scalar field with a coupling constant equal to 1 6 . The nonminimal coupling term, in turn, does not violate the equivalence principle. As an application we obta...
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Basically the only existing theories for the creation of a magnetic field (B) in the Universe are the creation of a seed field ∼ 10 G in spiral galaxy which is subsequently supposedly amplified up to the observed 10—10 G by a dynamo process or a seed intergalactic field of ∼ 10—10 G which is amplified by collapse and differential rotation. No satisfactory dynamo theory, however, exists today. W...
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ژورنال
عنوان ژورنال: Physics Letters A
سال: 1995
ISSN: 0375-9601
DOI: 10.1016/0375-9601(94)01017-o