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arXiv · 2507.22835

Gravitons and Temperature Fluctuation Correlations from Inflation

L. H. Ford·I-Tai Ho·Chun-Hsien Wu
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Abstract

Inflationary tensor perturbations are treated as arising from a bath of gravitons produced by quantum particle creation at the end of inflation. We calculate the correlation function of the CMB temperature fluctuations produced by these gravitons in a model with an infrared cut off. The CMB photons are emitted from within a last scattering shell of finite thickness in redshift. We find the correlation function in terms of the separation of a pair of spacetime points of emission in both angle and redshift. In both variables, there is a significant amount of anti-correlation. The anti-correlation minimum has a relative magnitude compared to the central correlation maximum of about 20% in angle and 50% in redshift.

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L. H. Ford, I-Tai Ho, Chun-Hsien Wu. 2025-07-30. Gravitons and Temperature Fluctuation Correlations from Inflation. https://arxiv.org/abs/2507.22835

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