Quantum Cosmology will need to become a Numerical Subject
Abstract
The inhomogeneous fluctuations that underlie structure formation - galaxies and CMB hotspots - might have been seeded by quantum cosmological fluctuations, as magnified by some inflationary mechanism. The Halliwell-Hawking model for these, as a lower-energy semiclassical limit, is expected to be shared by many theories. E.g. an O((H/m_pl)^2) suppression of power at large scales results from this. This model contains/suppresses very many terms; we want a qualitative understanding of the meaning of these terms and of different regimes resulting from different combinations of them. I study this with toy models that have tractable mathematics: minisuperspace and, especially, relational particle mechanics. In the present Seminar, I consider in particular averaged terms with some lessons from Hartree-Fock approach to Atomic and Molecular Physics. One needs to anchor this on variational principles; treating the subsequent equations is a numerical venture.
Cite
@article{arxiv.1306.5812,
title = {Quantum Cosmology will need to become a Numerical Subject},
author = {Edward Anderson},
journal= {arXiv preprint arXiv:1306.5812},
year = {2017}
}
Comments
9 pages, 1 Figure. Invited Seminar at 'XXIX-th International Workshop on High Energy Physics: New Results and Actual Problems in Particle & Astroparticle Physics and Cosmology' (Moscow 2013). 1 reference added and minor typos corrected