Singularity avoidance and time in quantum gravity

Andreas Kreienbuehl
Phys. Rev. D 79, 123509 – Published 17 June 2009

Abstract

We consider the quantization of a Friedmann-Robertson-Walker universe. We derive a reduced square root Hamiltonian by choosing the scale factor as time variable and quantize the theory using Pauli matrices à la Dirac. From the resulting spinor equation we show that there is no semiclassical wave packet that avoids the big bang singularity. Our work raises the question concerning the relationship between the choice of time and singularity avoidance.

  • Figure
  • Figure
  • Received 3 February 2009

DOI:https://doi.org/10.1103/PhysRevD.79.123509

©2009 American Physical Society

Authors & Affiliations

Andreas Kreienbuehl*

  • University of New Brunswick, Department of Mathematics and Statistics, Fredericton, NB E3B 5A3, Canada

  • *k7cw3@unb.ca

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 79, Iss. 12 — 15 June 2009

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×