MHz gravitational waves from short-term anisotropic inflation

Journal Article · Mon Apr 18 00:00:00 EDT 2016 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2016/04/035· OSTI ID:22572063

Ito, Asuka; Soda, Jiro ^[1]

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1. Department of Physics, Kobe University,Kobe 657-8501 (Japan)

We reveal the universality of short-term anisotropic inflation. As a demonstration, we study inflation with an exponential type gauge kinetic function which is ubiquitous in models obtained by dimensional reduction from higher dimensional fundamental theory. It turns out that an anisotropic inflation universally takes place in the later stage of conventional inflation. Remarkably, we find that primordial gravitational waves with a peak amplitude around 10{sup −26}∼10{sup −27} are copiously produced in high-frequency bands 10 MHz∼100 MHz. If we could detect such gravitational waves in future, we would be able to probe higher dimensional fundamental theory.

• Sponsoring Organization: SCOAP3, CERN, Geneva (Switzerland)
• OSTI ID: 22572063
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2016, Issue 04; Other Information: PUBLISHER-ID: JCAP04(2016)035; OAI: oai:repo.scoap3.org:15262; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; 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
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
COMPACTIFICATION
COSMOLOGICAL INFLATION
COSMOLOGY
GRAVITATIONAL WAVES
INFLATIONARY UNIVERSE
MHZ RANGE 01-100