Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic fluid dynamical simulations of heavy-ion collisions   We present VAH, a (3+1)-dimensional simulation that evolves the
far-from-equilibrium quark-gluon plasma produced in ultrarelativistic heavy-ion
collisions with anisotropic fluid dynamics. We solve the hydrodynamic equations
on an Eulerian grid using the Kurganov-Tadmor algorithm in combination with a
new adaptive Runge-Kutta method. Our numerical scheme allows us to start the
simulation soon after the nuclear collision, largely avoiding the need to
integrate it with a separate pre-equilibrium dynamics module. We test the
code's performance by simulating on the Eulerian grid conformal and
non-conformal Bjorken flow as well as conformal Gubser flow, whose
(0+1)-dimensional solutions are precisely known. Finally, we compare
non-conformal anisotropic hydrodynamics to second-order viscous hydrodynamics
in central Pb+Pb collisions and find that the former's longitudinal flow
profile responds more consistently to the fluid's gradients along the spacetime
rapidity direction.

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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
3
The categories of this paper are: physics