Quantum Nature of the Big Bang Export

@misc{ashtekar06-1, abstract = {Some long standing issues concerning the quantum nature of the big bang are resolved in the context of homogeneous isotropic models with a scalar field. Specifically, the known results on the resolution of the big bang singularity in loop quantum gravity are significantly extended as follows: i) the scalar field is shown to serve as an internal clock, thereby providing a detailed realization of the `emergent time' idea; ii) the physical Hilbert space, Dirac observables and semi-classical states are constructed rigorously; iii) the Hamiltonian constraint is solved numerically to show that the big bang is replaced by a big bounce. Thanks to the non-perturbative, background independent methods, unlike in other approaches the quantum evolution is deterministic across the deep Planck regime.}, archivePrefix = {arXiv}, author = {Ashtekar, Abhay and Pawlowski, Tomasz and Singh, Parampreet}, citeulike-article-id = {518797}, citeulike-linkout-0 = {http://arxiv.org/abs/gr-qc/0602086}, citeulike-linkout-1 = {http://arxiv.org/pdf/gr-qc/0602086}, day = {22}, eprint = {gr-qc/0602086}, keywords = {cosmology, quantum}, month = {Feb}, posted-at = {2009-07-07 12:40:24}, priority = {2}, title = {Quantum Nature of the Big Bang}, url = {http://arxiv.org/abs/gr-qc/0602086}, year = {2006} }

TY - ELEC ID - ashtekar06-1 L3 - citeulike-article-id:518797 N2 - Some long standing issues concerning the quantum nature of the big bang are resolved in the context of homogeneous isotropic models with a scalar field. Specifically, the known results on the resolution of the big bang singularity in loop quantum gravity are significantly extended as follows: i) the scalar field is shown to serve as an internal clock, thereby providing a detailed realization of the `emergent time' idea; ii) the physical Hilbert space, Dirac observables and semi-classical states are constructed rigorously; iii) the Hamiltonian constraint is solved numerically to show that the big bang is replaced by a big bounce. Thanks to the non-perturbative, background independent methods, unlike in other approaches the quantum evolution is deterministic across the deep Planck regime. TI - Quantum Nature of the Big Bang KW - cosmology KW - quantum AU - Ashtekar, Abhay AU - Pawlowski, Tomasz AU - Singh, Parampreet PY - 2006/Feb/22/ UR - http://arxiv.org/abs/gr-qc/0602086 ER -