MG12 - Talk detail |
Participant |
Bojowald, Martin | |
Institution |
The Pennsylvania State University - 104 Davey Lab - University Park - PA - USA | |
Session |
Talk |
Abstract |
SQG2 |
Perturbations in Loop Quantum Cosmology |
While realistic space-time solutions cannot easily be found in classical or quantum gravity, perturbation schemes around simple solutions can provide a good view of the physics involved. In loop quantum cosmology, there are different kinds of degrees of freedom to be included: inhomogeneities around FRW models, and quantum effective interactions even of isotropic space-times. A summary of the current status will be given, together with potential implications for the big bang and structure formation. |
MGAT2 |
Approaching Isotropic Singularities in Quantum Cosmology |
Quantum cosmology can be formulated as an effective system, where the set of classical variables is extended by infinitely many moments of a quantum state. All these variables are in general coupled in a complicated way of quantum back-reaction. We describe this system in a perturbative effective way and discuss how classical asymptotics of the approach could be influenced by quantum dynamics. |
COT3 |
How quantum is the big bang? |
Quantum effects are often expected to play a crucial role in making non-singular cosmologies possible. Effective equations in quantum cosmology will be used to analyze the prospects for a general resolution of big bang singularities in different models and quantization schemes. |
COT4 |
DEBATE: Invited participant in the debate on quantum cosmology in the COT4 session |
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