Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A resummed method of moments for the relativistic hydrodynamic expansion   The relativistic method of moments is one of the most successful approaches
to extract second order viscous hydrodynamics from a kinetic underlying
background. The equations can be systematically improved to higher order, and
they have already shown a fast convergence to the kinetic results. In order to
generalize that method, we introduced long range effects in the form of
effective (medium dependent) masses and gauge (coherent) fields. The most
straightforward generalization of the hydrodynamic expansion is problematic, or
simply ill-defined, at higher order. Instead of introducing an additional set
of approximations, we propose to rewrite the series in terms of moments
resumming the contributions of infinite non-hydrodynamics modes. The resulting
equations are consistent with hydrodynamics and well defined at all order. We
tested the new approximation against the exact solutions of the
Boltzmann-Maxwell-Vlasov equations in $(0+1)$-dimensions, finding a fast and
stable convergence to the exact results.

11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con