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The First Half of the Universe: Evolving Moduli and Cosmic Superstring Epochs

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If you have a question about this talk, please contact Gonzalo Villa .

Between the epochs of inflation and nucleosynthesis — a period lasting approximately half the lifetime of the universe on a logarithmic scale — the universe is almost entirely unconstrained. Not only may the equation of state be very different from that of the Standard Cosmology, the vacuum configuration may be far from our current vacuum. I describe the string theory motivation and physics for a rolling modulus epoch here, and explain how this can lead to an attractor solution in which 75% of the energy density lies in the form of loops of fundamental strings. I briefly discuss possible observational signatures of this epoch from relic gravitational waves.

This talk is part of the Cosmology Lunch series.

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