Скачать или смотреть Sing18: Effective field theory of quantum cosmology by Martin Bojowald

Lecture at the 2nd workshop on "Singularities of general relativity and their quantum fate" 22.05.2018, Warsaw.

A discussion of inhomogeneity is indispensable in quantum cosmology, even if one is interested only in the dynamics of homogeneous models in a first approximation. Examples of important issues that cannot be addressed within a pure minisuperspace setting include covariance, stability, robustness, potentially observable phenomena, or possible implications of physical effects such as cosmological analogs of the Casimir force. While a full quantization of inhomogeneous gravity is not available, a framework of effective field theory can be used to provide important ingredients for quantum cosmology. Such a framework also allows one to take into account lessons from the BKL scenario. Based on these new ingredients, in turn, one can formulate conditions on various parameters or other mathematical objects that appear in minisuperspace models. Loop quantum cosmology, in its commonly practiced form, does not obey these conditions.

Slides avaiable at the workshop site: https://www.impan.pl/konferencje/bcc/...