k-Essence, superluminal propagation, causality and emergent geometry - INSPIRE

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k-Essence, superluminal propagation, causality and emergent geometry

Eugeny Babichev
(
- Gran Sasso and
- Moscow, INR
)
,
Viatcheslav Mukhanov
(
- Munich U., ASC and
- Munich U.
)
,
Alexander Vikman
(
- Munich U., ASC and
- Munich U.
)

Aug, 2007

34 pages

Published in:

JHEP 02 (2008) 101

e-Print:

0708.0561 [hep-th]

DOI:

10.1088/1126-6708/2008/02/101

Report number:

LMU-ASC-54-07

View in:

reference search455 citations

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Abstract: (arXiv)

The k-essence theories admit in general the superluminal propagation of the perturbations on classical backgrounds. We show that in spite of the superluminal propagation the causal paradoxes do not arise in these theories and in this respect they are not less safe than General Relativity.

Space-Time Symmetries
Classical Theories of Gravity
Cosmology of Theories beyond the SM
k-essence
space-time
field theory: scalar
field equations: solution
geometry
fluctuation
causality

References(111)

Figures(0)

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