Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2000-06-06
Mod.Phys.Lett.A15:1813-1821,2000
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
4 pages, revtex
Scientific paper
10.1142/S0217732300002371
Starting from an (unknown) quantum gravitational model, one can invoke a sequence of approximations to progressively arrive at quantum field theory (QFT) in curved spacetime, QFT in flat spacetime, nonrelativistic quantum mechanics and newtonian mechanics. The more exact theory can put restrictions on the range of possibilities allowed for the approximate theory which are not derivable from the latter - an example being the symmetry restrictions on the wave function for a pair of electrons. We argue that the choice of vacuum state at low energies could be such a `relic' arising from combining the principles of quantum theory and general relativity, and demonstrate this result in a simple toy model. Our analysis suggests that the wave function of the universe, when it describes the large volume limit of the universe, dynamically selects a vacuum state for matter fields - which in turn defines the concept of particle in the low energy limit. The result also has the potential for providing a concrete quantum mechanical version of Mach's principle.
Choudhury Tirthankar Roy
Padmanabhan Thanu
No associations
LandOfFree
The Issue of Choosing Nothing: What Determines the Low Energy Vacuum State of Nature? 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 The Issue of Choosing Nothing: What Determines the Low Energy Vacuum State of Nature?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Issue of Choosing Nothing: What Determines the Low Energy Vacuum State of Nature? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-482406