Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Holographic Collisions across a Phase Transition   We use holography to analyse relativistic collisions in a one-parameter
family of strongly coupled gauge theories with thermal phase transitions. For a
critical value of the parameter the transition is second order, for subcritical
values it is first order, and for super-critical values it is a smooth
crossover. We extract the gauge theory stress tensor from collisions of
gravitational shock waves on the dual geometries. Regardless of the nature of
the transition, for values of the parameter close to the critical value almost
all the energy of the projectiles is deposited into a long-lived, quasi-static
blob of energy at mid-rapidity. This configuration is well described by the
constitutive relations of second-order hydrodynamics that include all
second-order gradients that are purely spatial in the local rest frame. In
contrast, a M\"uller-Israel-Stewart-type formulation of hydrodynamics fails to
provide a good description. We discuss possible implications for searches of
the QCD critical point.

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The categories of this paper are: physics
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex