Scalar graviton in the healthy extension of Horava-Lifshitz theory

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.084009· OSTI ID:21541475

Ronggen, Cai; Bin, Hu; Hongbo, Zhang ^[1]

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1. Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100190 (China)

In this note we study the linear dynamics of scalar graviton in a de Sitter background in the infrared limit of the healthy extension of Horava-Lifshitz gravity with the dynamical critical exponent z=3. Both our analytical and numerical results show that the nonzero Fourier modes of scalar graviton oscillate with an exponentially damping amplitude on the subhorizon scale, while on the superhorizon scale, the phases are frozen and they approach to some asymptotic values. In addition, as the case of the nonzero modes on superhorizon scale, the zero mode also initially decays exponentially and then approaches to an asymptotic constant value.

• OSTI ID: 21541475
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 8; Other Information: DOI: 10.1103/PhysRevD.83.084009; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ASYMPTOTIC SOLUTIONS
DAMPING
DE SITTER SPACE
DECAY
GRAVITATION
MATHEMATICAL SOLUTIONS
MATHEMATICAL SPACE
SPACE