Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Filtering Schemes in the Quantum-Classical Liouville Approach to
  Non-adiabatic Dynamics   We study a number of filtering schemes for the reduction of the statistical
error in non-adiabatic calculations by means of the quantum-classical Liouville
equation. In particular, we focus on a scheme based on setting a threshold
value on the sampling weights, so that when the threshold is overcome the value
of the weight is reset, and on another approach which prunes the ensemble of
the allowed non-adiabatic transitions according to a generalised sampling
probability. Both methods have advantages and drawbacks, however their
combination drastically improves the performance of an algorithm known as the
Sequential Short Time Step Propagation [D. MacKernan et al., J. Phys: Condens.
Matter {\bf 14} 9069 (2002)], which is derived from a simple first order
expansion of the quantum-classical propagator. Such an algorithm together with
the combined filtering procedures produce results that compare very well with
those obtained by means of numerically "exact" quantum calculations for the
spin-boson model, even for intermediate and strong coupling regimes.

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The categories of this paper are: astro-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ph
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The categories of this paper are: physics
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The categories of this paper are: atom-ph