On the infrared limit of Horava's gravity with the global Hamiltonian constraint
Archil Kobakhidze
TL;DR
This paper demonstrates that Horava's gravity with a global Hamiltonian constraint fails to recover General Relativity in the infrared, due to an extra propagating degree of freedom that remains coupled.
Contribution
It provides a detailed analysis showing the failure of IR limit recovery in Horava's gravity with a global Hamiltonian constraint, highlighting the persistence of an extra degree of freedom.
Findings
Horava's gravity does not reproduce GR in the IR limit.
An extra propagating degree of freedom remains coupled.
The extra mode does not decouple in the low-energy limit.
Abstract
We show that Horava's theory of gravitation with the global Hamiltonian constraint does not reproduce General Relativity in the infrared domain. There is one extra propagating degree of freedom, besides those two associated with the massless graviton, which does not decouple.
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