Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: \emph{Ab initio} Quantum Monte Carlo simulation of the warm dense
  electron gas   Warm dense matter is one of the most active frontiers in plasma physics due
to its relevance for dense astrophysical objects as well as for novel
laboratory experiments in which matter is being strongly compressed e.g. by
high-power lasers. Its description is theoretically very challenging as it
contains correlated quantum electrons at finite temperature---a system that
cannot be accurately modeled by standard analytical or ground state approaches.
Recently several breakthroughs have been achieved in the field of fermionic
quantum Monte Carlo simulations. First, it was shown that exact simulations of
a finite model system ($30 \dots 100$ electrons) is possible that avoid any
simplifying approximations such as fixed nodes [Schoof {\em et al.}, Phys. Rev.
Lett. {\bf 115}, 130402 (2015)]. Second, a novel way to accurately extrapolate
these results to the thermodynamic limit was reported by Dornheim {\em et al.}
[Phys. Rev. Lett. {\bf 117}, 156403 (2016)]. As a result, now thermodynamic
results for the warm dense electron gas are available that have an
unprecedented accuracy on the order of $0.1\%$. Here we present an overview on
these results and discuss limitations and future directions.

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The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex