Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ghost spectral function from the spectral Dyson-Schwinger equation   We compute the ghost spectral function in Yang-Mills theory by solving the
corresponding Dyson-Schwinger equation for a given input gluon spectral
function. The results encompass both scaling and decoupling solutions for the
gluon propagator input. The resulting ghost spectral function displays a
particle peak at vanishing momentum and a negative scattering spectrum, whose
infrared and ultraviolet tails are obtained analytically. The ghost dressing
function is computed in the entire complex plane, and its salient features are
identified and discussed.

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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: cs
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The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc