When Time Emerges
- Author(s)
- Cornelia Faustmann, Helmut Neufeld, Walter Thirring
- Abstract
We study the geodesics in a space-time where a metric with Minkowski type signature is continued across a singularity to a region with a different space-time signature. Contrary to naive expectation, the motion of test particles does not end up in a catastrophe. Depending on the form of the signature change and the initial conditions, timelike (or light-like) geodesics are either reflected at the singularity or even leave the Minkowski sector and use the region with the flipped metric for a time travel. An observer in the Minkowski sector interprets this as the creation of a particle and an antiparticle at the singularity.
- Organisation(s)
- Vienna University Library and Archive Services, Particle Physics
- Pages
- 277-291
- DOI
- https://doi.org/10.1142/9789814277839_0016
- Publication date
- 2009
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/when-time-emerges(16ebd7cd-7c2b-43c6-b948-fc5cd0be7fe3).html