Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on 'Uniqueness of the Equation for Quantum State Vector
  Collapse' [arXiv:1303.4284]   A diffusive stochastic Schr\"odinger equation (SSE) is shown for the first
time, such that contributes to a non-completely positive dynamics. This
contradicts to a recent Letter [arXiv:1303.4284] claiming that SSEs, under most
general conditions, enforce complete-positivity. The general form and
parametrization of the SSE in the Letter is different from an alternative
simpler result, the difference is shown to be completely redundant because of
the gauge-freedom of the state vector's phase.

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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
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The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
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The categories of this paper are: stat
5
The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga