RT Journal Article
T1 Immirzi ambiguity, boosts and conformal frames for black holes
A1 Garay Elizondo, Luis Javier
A1 Mena Marugán, Guillermo A.
AB We analyse changes of the Immirzi parameter in loop quantum gravity and compare their consequences with those of Lorentz boosts and constant conformal transformations in black-hole physics. We show that the effective value deduced for the Planck length in local measurements of vacuum black holes by an asymptotic observer may depend on its conformal or Lorentz frame. This introduces an apparent ambiguity in the expression of the black-hole entropy which is analogous to that produced by the Immirzi parameter. For quantities involving a notion of energy, the similarity between the implications of the Immirzi ambiguity and a conformal scaling disappears, but the parallelism with boosts is maintained.
PB IOP Publishing Ltd
SN 0264-9381
YR 2003
FD 2003-04-21
LK https://hdl.handle.net/20.500.14352/51355
UL https://hdl.handle.net/20.500.14352/51355
LA eng
NO © IOP Publishing. The authors acknowledge DGESIC for financial support under Research Project No. BFM2001-0213.
NO DGESIC
DS Docta Complutense
RD 7 abr 2025