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A possible correspondence between Ricci identities and Dirac equations in the Newman-Penrose formalism Towards an understanding of gravity induced collapse of the wave-function?

DSpace at IIT Bombay

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Title A possible correspondence between Ricci identities and Dirac equations in the Newman-Penrose formalism Towards an understanding of gravity induced collapse of the wave-function?
 
Creator SHARMA, A
SINGH, TP
 
Subject Newman-Penrose formalism
Ricci identities
Dirac equation
Torsion
SPACE-TIME
TORSION
REDUCTION
PARTICLES
SYSTEMS
MODELS
 
Description It is well-known that in the Newman-Penrose formalism the Riemann tensor can be expressed as a set of eighteen complex first-order equations, in terms of the twelve spin coefficients, known as Ricci identities. The Ricci tensor herein is determined via the Einstein equations. It is also known that the Dirac equation in a curved spacetime can be written in the Newman-Penrose formalism as a set of four first-order coupled equations for the spinor components of the wave-function. In the present article we suggest that it might be possible to think of the Dirac equations in the N-P formalism as a special case of the Ricci identities, after an appropriate identification of the four Dirac spinor components with four of the spin coefficients, provided torsion is included in the connection, and after a suitable generalization of the energy-momentum tensor. We briefly comment on similarities with the Einstein-Cartan-Sciama-Kibble theory. The motivation for this study is to take some very preliminary steps towards developing a rigorous description of the hypothesis that dynamical collapse of the wave-function during a quantum measurement is caused by gravity.
 
Publisher SPRINGER/PLENUM PUBLISHERS
 
Date 2014-12-28T14:32:50Z
2014-12-28T14:32:50Z
2014
 
Type Article
 
Identifier GENERAL RELATIVITY AND GRAVITATION, 46(11)
0001-7701
1572-9532
http://dx.doi.org/10.1007/s10714-014-1821-0
http://dspace.library.iitb.ac.in/jspui/handle/100/16762
 
Language English