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Problems with the Big Bang

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Cosmology for the Curious
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Abstract

The hot big bang cosmology that we have discussed so far has been a very successful theory

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Notes

  1. 1.

    This is only true if the universe expands with deceleration, which is indeed the case for the radiation and matter dominated epochs of the standard big bang model.

  2. 2.

    We disregard the recent period of accelerated expansion due to the dark energy. If we took this into account, our conclusions would remain the same.

  3. 3.

    Our density estimate here is for GUT monopoles, but the problem persists even if the monopoles are formed at a lower energy scale.

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Perlov, D., Vilenkin, A. (2017). Problems with the Big Bang. In: Cosmology for the Curious. Springer, Cham. https://doi.org/10.1007/978-3-319-57040-2_15

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