2009/10/31 by Mu-In Park, Mu-in Park · 22 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Consistency (knowledge bases) #Cosmology and Gravitation Theories #Decoupling (probability) #Graviton #Hamiltonian (control theory) #Massive gravity #Minkowski space #Noncommutative and Quantum Gravity Theories #Scalar (mathematics) #Scalar field #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1088/0264-9381/28/1/015004
published in Classical and Quantum Gravity 28(1), 015004 (IOP Publishing) · Some clarifications regarding the projectable case added, Typos corrected, Comments (Footnote No.9, Note Added) added, References updated, Accepted in CQG
arxiv created 2010/11/17 · openalex publication_date 2010/12/08 · arxiv updated 2010/12/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
Recently Hořava proposed a renormalizable gravity theory with higher derivatives by abandoning the Lorenz invariance in UV. But there have been confusions regarding an extra scalar graviton mode and the consistency of the Hořava model. I reconsider these problems and show that, in the Minkowski vacuum background, the scalar graviton mode can be the consistency decoupled from the usual tensor graviton modes, by imposing the (local) Hamiltonian as well as the momentum constraints.