Existence of spinorial states in pure loop quantum gravity

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By this: publisher
In this Subject: Nuclear Physics
By this author: Arnsdorf M. ;&nbsp; Garcia R.S.

Authors: Arnsdorf M.; Garcia R.S.

Source: Classical and Quantum Gravity, Volume 16, Number 10, 1999 , pp. 3405-3418(14)

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Abstract:

We demonstrate the existence of spinorial states in a kinematical theory of canonical quantum gravity without matter. This should be regarded as evidence in support of the conjecture that bound states with particle properties appear in association with spatial regions of non-trivial topology. In asymptotically trivial general relativity the momentum constraint generates only a subgroup of the spatial diffeomorphisms. The remaining diffeomorphisms give rise to the mapping class group, which acts as a symmetry group on the phase space. This action induces a unitary representation on the loop state space of the Ashtekar formalism. Certain elements of the diffeomorphism group can be regarded as asymptotic rotations of space relative to its surroundings. We construct states that transform non-trivially under a 2-rotation: gravitational quantum states with fractional spin.

Language: English

Document Type: Miscellaneous

Publication date: 1999-01-01