Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Twisted mass gauge ensembles at physical values of the light, strange
  and charm quark masses   Lattice QCD simulations directly at physical masses of dynamical light,
strange and charm quarks are highly desirable especially to remove systematic
errors due to chiral extrapolations. However such simulations are still
challenging. We discuss the adaption of efficient algorithms, like multi-grid
methods or higher order integrators, within the molecular dynamic steps of the
Hybrid Monte Carlo algorithm, that are enabling simulations of a new set of
gauge ensembles by the Extended Twisted Mass collaboration (ETMC). We present
the status of the on-going ETMC simulation effort that aims to enabling studies
of finite size and discretization effects. We work within the twisted mass
discretization which is free of odd-discretization effects at maximal twist and
present our tuning procedure.

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The categories of this paper are: econ
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The categories of this paper are: eess
34
The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: physics
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The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
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The categories of this paper are: cs