Wormholes in Horava Gravity Nicolás E. Grandi 1 XXXVIII Strings@ar meeting
Jun 13, 2015
XXXVIII Strings@ar meeting 1
Wormholes in Horava Gravity
Nicolás E. Grandi
XXXVIII Strings@ar meeting
Wormholes in Horava gravity
Nicolás E. GrandiMarcelo A. N. Botta CantcheffMauricio Sturla
arXiv: 0906.0852 [hep-th]
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Pseudo-Riemannian
structureQuantizationManifoldDynamics
Einstein Gravity
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Einstein Gravity
QuantizationNon-
renormalizable by power counting
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Higher Derivative Gravity
Non-renormalizable
by power counting
DynamicsDynamics
Higher derivatives
QuantizationHigher
derivatives
Non-renormalizable
by power counting?
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QuantizationHigher
derivatives
Non-renormalizable
by power counting?
Higher Derivative Gravity
Propagation
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QuantizationHigher
derivatives
Higher Derivative Gravity
Renormalizable by power counting!
Propagation
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Higher Derivative Gravity
PropagationGhosts!
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Pseudo-Riemannian
structureDynamics
Einstein Gravity
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Einstein Gravity
Dynamics
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Pseudo-Riemannian
structureManifoldFoliatedManifoldHorava
Dynamics
Horava Gravity
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HoravaDynamics
Horava Gravity
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QuantizationNon-
renormalizable by power counting?
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Horava Gravity
Non-renormalizable
by power counting?
PropagationQuantization
Horava
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No ghosts!
Horava Gravity
QuantizationHorava
Renormalizable by power counting!
Propagation
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Horava Gravity
PropagationDynamicsDetailed Balance
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Detailed Balance
Horava Gravity
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Horava Gravity
- Power counting renormalizable (field) theory of gravity
- No ghost
- Recovers relativistic invariance at low energies as an accidental symmetry
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Horava Gravity
- One less gauge invariance -> one extra mode– - Non propagating in flat space
– - Strogly coupled to matter and exponencially unstable in generic backgrounds
- Possible solutions- Extra gauge invariances? (Anisotropic Weil
invariance for l=1/3)- Covariantize the theory
- Is l really equal to 1 ?
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Thanks!