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Hot origin of the Little Bang

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Abstract.

Ultrarelativistic heavy ion collisions produce a quark-gluon matter which lies in the future light cone originating from given points on the t = z = 0 plane of the Minkowski spacetime manifold. We show that in a weak coupling regime the Minkowski vacuum of massless fields presents itself in the “Little Bang” region as a thermal state of low \( p_{T}\) particles, in close analogy to the Unruh effect for uniformly accelerated observers which are causally restricted to a Rindler wedge. It can shed some light on the mechanisms of early time thermalization in ultrarelativistic heavy ion collisions.

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Authors and Affiliations

  1. Bogolyubov Institute for Theoretical Physics, Metrolohichna 14b, 03680, Kiev, Ukraine

    S. V. Akkelin

  2. Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120, Heidelberg, Germany

    S. V. Akkelin

  3. ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291, Darmstadt, Germany

    S. V. Akkelin

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  1. S. V. Akkelin
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Correspondence to S. V. Akkelin.

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Communicated by G. Torrieri

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Akkelin, S.V. Hot origin of the Little Bang. Eur. Phys. J. A 53, 232 (2017). https://doi.org/10.1140/epja/i2017-12432-1

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  • DOI: https://doi.org/10.1140/epja/i2017-12432-1

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