QG4 - Loop Quantum gravity, Quantum Geometry, Spin Foams |
Speaker_ |
Salisbury, Donald |
Co-autors |
A. Schmitz |
Talk _ |
A generalized Schroedinger equation for loop quantum cosmology |
Abstract _ |
A temporally discrete Schroedinger time evolution equation is proposed for isotropic quantum cosmology coupled to a massless scalar source. The approach employs dynamically determined intrinsic time. Possible implementations include simple time stepping or superpositions of Planckian times, reflecting fluctuations arising from an intrinsically fixed lapse function. The semiclassical limit is compared and contrasted with results obtained by Bojowald. The classical foundations of this approach can be found in preprints gr-qc/0503013 and gr-qc/0503014. |