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  Some Comments on the Representation Theory of the Algebra Underlying Loop Quantum Gravity

Sahlmann, H. (2002). Some Comments on the Representation Theory of the Algebra Underlying Loop Quantum Gravity.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5491-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5492-6
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3095.pdf (Preprint), 169KB
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 Creators:
Sahlmann, Hanno1, Author
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1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24014              

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 Abstract: Important characteristics of the loop approach to quantum gravity are a specific choice of the algebra A of observables and of a representation of A on a measure space over the space of generalized connections. This representation is singled out by its elegance and diffeomorphism covariance. Recently, in the context of the quest for semiclassical states, states of the theory in which the quantum gravitational field is close to some classical geometry, it was realized that it might also be worthwhile to study different representations of the algebra A of observables. The content of the present note is the observation that under some mild assumptions, the mathematical structure of representations of A can be analyzed rather effortlessly, to a certain extent: Each representation can be labeled by sets of functions and measures on the space of (generalized) connections that fulfill certain conditions. These considerations are however mostly of mathematical nature. Their physical content remains to be clarified, and physically interesting examples are yet to be constructed

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Language(s): eng - English
 Dates: 2002
 Publication Status: Published in print
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 Identifiers: eDoc: 3095
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