Experimental tests for some quantum effects in gravitation

Hari Dass, N.D.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2668

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DC Field	Value	Language
dc.contributor.author	Hari Dass, N.D.	-
dc.date.accessioned	2007-06-11T06:31:48Z	-
dc.date.available	2007-06-11T06:31:48Z	-
dc.date.issued	1977-09	-
dc.identifier.citation	Annals of Physics, 1977, Vol.107, p337-359	en
dc.identifier.issn	0003-4916	-
dc.identifier.uri	http://hdl.handle.net/2289/2668	-
dc.description	Restricted Access.	en
dc.description.abstract	The existing impressive tests for general relativity are shown not to yield very useful information on the possible quantum gravitational interactions. The possibility is raised here that intrinsic spins may behave differently from orbital angular momenta in external gravitational fields. The dominant spin interactions are most generally characterized by three parameters α1, α2, α3. All the metric theories of gravitation predict α1 = α2 = 0. Indirect limits posed on these parameters by existing data are not very meaningful (αi less, approximate 1010). Feasible experiments based on the neutron electric dipole moment measurement techniques are discussed and shown to offer the possibility of measuring α1 not, vert, similar 1. Other possible experimental set ups are also briefly reviewed. The existence of these effects is shown to imply the breakdown of the equivalence principle. In particular, α1 ≠ 0, α2 ≠ 0 also implies the breakdown of discrete symmetries in gravitation (C, P, T). Theoretical frameworks that accommodate such effects are analyzed. A reinterpretation of Einstein's generalized gravitational theory as well as a recent theoretical proposal of Hayashi are shown to be sufficiently general for this purpose. Other important implications of these quantum effects are discussed in detail.	en
dc.format.extent	1650774 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	Elsevier B.V.	en
dc.relation.uri	http://dx.doi.org/10.1016/0003-4916(77)90215-9	en
dc.rights	1977 Elsevier B.V.	en
dc.title	Experimental tests for some quantum effects in gravitation	en
dc.type	Article	en
Appears in Collections:	Research Papers (TP)

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