MG15 - Talk detail |
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Participant |
Liegener, Klaus | |||||||
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Institution |
Institute for Quantum Gravity - Staudtstr 7 B2 - Erlangen - Bayern - Germany | |||||||
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Session |
QG1 |
Accepted |
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Time |
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Talk |
Oral abstract |
Title |
Discretisation Ambiguities in (Loop) Quantum Gravity | |||||
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Abstract |
During the programme of canonical quantisation different ambiguities arise. We will put special focus to the origin of "discretisation ambiguities". That their effect is non-trivial will be demonstrated by an example: In Robertson-Walker cosmology the effective Hamiltonian of two proposed regularisations in Loop Quantum Gravity predict the resolution of the initial singularity by a Big Bounce. However, the details of this Bounce are vastly different in both proposals. Hence, we will finally present a framework for Hamiltonian Renormalisation, directly aimed at solving these ambiguities. |
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