A thermal graviton background from extra dimensions

2005/03/18 by E. R. Siegel, J. N. Fry · 5 citations
Physics and Astronomy · #Astronomy #Astrophysics #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Extra dimensions #Gravitation #Graviton #Large extra dimension #Particle physics #Physics #Pulsars and Gravitational Waves Research #Thermal #Thermodynamics #astro-ph #hep-ph

paper · pdf · doi:10.1016/j.physletb.2005.03.013

published in Physics Letters B 612(3-4), 122-126 (Elsevier BV) · 5 pages, 1 figure, requires autart.cls, to appear in Phys. Lett. B, 1 reference added

openalex publication_date 2005/03/18 · arxiv created 2005/04/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Inflationary cosmology predicts a low-amplitude graviton background across a wide range of frequencies. This Letter shows that if one or more extra dimensions exist, the graviton background may have a thermal spectrum instead, dependent on the fundamental scale of the extra dimensions. The energy density is shown to be significant enough that it can affect nucleosynthesis in a substantial way. The possibility of direct detection of a thermal graviton background using the 21-cm hydrogen line is discussed. Alternative explanations for the creation of a thermal graviton background are also examined.

Citations

• Inflationary Theory and Alternative Cosmology
• Large Mass Hierarchy from a Small Extra Dimension
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results
• An Alternative to Compactification
• The Hierarchy Problem and New Dimensions at a Millimeter
• Transdimensional physics and inflation
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Quantentheorie und f�nfdimensionale Relativit�tstheorie

Cited by

• Modified Amplitude of Gravitational Waves Spectrum
• Detection of relic gravitational waves in thermal case by using Adv.LIGO data of GW150914