Quantum string cosmology
Abstract
We present a short review of possible applications of the Wheeler-De Witt equation to cosmological models based on the low-energy string effective action, and characterised by an initial regime of asymptotically flat, low energy, weak coupling evolution. Considering in particular a class of duality-related (but classically disconnected) background solutions, we shall discuss the possibility of quantum transitions between the phases of pre-big bang and post-big bang evolution. We will show that it is possible, in such a context, to represent the birth of our Universe as a quantum process of tunneling or "anti-tunneling" from an initial state asymptotically approaching the string perturbative vacuum.
Keywords
Cite
@article{arxiv.2101.01070,
title = {Quantum string cosmology},
author = {M. Gasperini},
journal= {arXiv preprint arXiv:2101.01070},
year = {2021}
}
Comments
16 pages, 3 figures. Final version published in Universe 7, 14 (2021) for the Special Issue on "Quantum Cosmology", ed. by Paulo Vargas Moniz. See also https://www.mdpi.com/2218-1997/7/1/14