Pre-bangian origin of our entropy and time arrow

Details Pre-bangian origin of our entropy and time arrow Pre-bangian origin of our entropy and time arrow

1999-02-17

arxiv.org/abs/hep-th/9902126v1

Phys.Lett. B454 (1999) 22-26

Physics

High Energy Physics

High Energy Physics - Theory

Latex file, 8 pages, 1 Figure

Scientific paper

10.1016/S0370-2693(99)00267-1

I argue that, in the chaotic version of string cosmology proposed recently, classical and quantum effects generate, at the time of exit to radiation, the correct amount of entropy to saturate a Hubble (or holography) entropy bound (HEB) and to identify, within our own Universe, the arrow of time. Demanding that the HEB be fulfilled at all times forces a crucial "branch change" to occur, and the so-called string phase to end at a critical value of the effective Planck mass, in agreement with previous conjectures.

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