The trispectrum in ghost inflation

Journal Article · Thu Jul 01 00:00:00 EDT 2010 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2010/07/025· OSTI ID:22272794

Huang, Qing-Guo ^[1]

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1. Kavli Institute for Theoretical Physics China (KITPC), Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 (China)

We calculate the trispectrum in ghost inflation where both the contact diagram and scale-exchange diagram are taken into account. The shape of trispectrum is discussed carefully and we find that the local form is absent in ghost inflation. In general, for the non-local shape trispectrum there are not analogous parameters to τ{sub NL}{sup loc.} and g{sub NL}{sup loc.} which can completely characterize the size of local form trispectrum.

• OSTI ID: 22272794
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2010, Issue 07; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COSMOLOGY
DIAGRAMS
ENERGY SPECTRA
INFLATIONARY UNIVERSE
INFLATONS
SHAPE