Spacetime geometry in (2+l)-gravity via measurements with returning lightrays
Meusburger C (2009)
Publication Status: Published
Publication Type: Conference contribution, Conference Contribution
Publication year: 2009
Book Volume: 1196
Pages Range: 181-189
Conference Proceedings Title: Proceedings, 25th Max Born Symposium: The Planck Scale
Event location: Wroclaw
ISBN: 9780735407336
DOI: 10.1063/1.3284381
Abstract
We consider an observer in a (2+l)-spacetime without matter and cosmological constant who measures spacetime geometry by emitting lightrays which return to him at a later time. We investigate several quantities associated with such Ughtrays: the return time, the directions into which light needs to be emitted to return and the frequency shift between the Ughtray at its emission and its return. We derive explicit expressions for these quantities as functions on the reduced phase space and show how they allow the observer to reconstruct the fidl geometry of the spacetime in finite eigentime. We comment on conceptual issues. In particidar, we clarify the relation between these quantities and Dirac observables and show that Wilson loops arise naturally in these quantities. © 2009 American Institute of Physics.
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How to cite
APA:
Meusburger, C. (2009). Spacetime geometry in (2+l)-gravity via measurements with returning lightrays. In Jerzy Kowalski‐Glikman, R. Durka, M. Szczachor (Eds.), Proceedings, 25th Max Born Symposium: The Planck Scale (pp. 181-189). Wroclaw, PL.
MLA:
Meusburger, Cathérine. "Spacetime geometry in (2+l)-gravity via measurements with returning lightrays." Proceedings of the 25th Max Born Symposium on the Planck Scale, Wroclaw Ed. Jerzy Kowalski‐Glikman, R. Durka, M. Szczachor, 2009. 181-189.
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