Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-09-14
Found.Phys.37:712-722,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Based on a talk given at the 2006 Biennial Meeting of the International Association for Relativistic Dynamics (IARD06). 11 pag
Scientific paper
10.1007/s10701-007-9113-0
Cosmology is usually understood as an observational science, where experimentation plays no role. It is interesting, nevertheless, to change this perspective addressing the following question: what should we do to create a universe, in a laboratory? It appears, in fact, that this is, in principle, possible according to at least two different paradigms; both allow to circumvent singularity theorems, i.e. the necessity of singularities in the past of inflating domains which have the required properties to generate a universe similar to ours. The first of them is substantially classical, and is built up considering solitons which collide with surrounding topological defects, generating an inflationary domain of space-time. The second is, instead, partly quantum and considers the possibility of tunnelling of past-non-singular regions of spacetime into an inflating universe, following a well-known instanton proposal. We are, here, going to review some of these models, as well as highlight possible extensions, generalizations and the open issues (as for instance the detectability of child universes and the properties of quantum tunnelling processes) that still affect the description of their dynamics. In doing so we will remark how the works on this subject can represent virtual laboratories to test the role that fundamental principles of physics (particularly, the interplay of quantum and general relativistic realms) played in the formation of our universe.
Ansoldi Stefano
Guendelman Eduardo I.
No associations
LandOfFree
Solitons as Key Parts to Produce a Universe in the Laboratory does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Solitons as Key Parts to Produce a Universe in the Laboratory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solitons as Key Parts to Produce a Universe in the Laboratory will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-537449