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Penrose’s circles in the CMB and a test of inflation

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Abstract

We present a calculation of the angular size of the circles in the CMB predicted by Penrose on the basis of his conformal cyclic cosmology. If these circles are detected, the existence of an upper limit on their angular radius would provide a challenge for inflation.

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References

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Acknowledgments

I am grateful to Sir Roger Penrose for many helpful discussions, to the Albert Einstein Institute, Golm, for hospitality while this work was in progress, and to Edward Wilson-Ewing for a helpful e-mail correspondence.

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  1. Mathematical Institute, St Giles, Oxford, OX1 3LB, UK

    Paul Tod

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  1. Paul Tod
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Correspondence to Paul Tod.

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Tod, P. Penrose’s circles in the CMB and a test of inflation. Gen Relativ Gravit 44, 2933–2938 (2012). https://doi.org/10.1007/s10714-012-1431-7

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  • DOI: https://doi.org/10.1007/s10714-012-1431-7

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