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News from bottomonium spectral functions in thermal QCD

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arxiv 1912.12900 v1 pith:KUFC3ZU2 submitted 2019-12-30 hep-lat nucl-th

Sam Offler , Gert Aarts , Chris Allton , Jonas Glesaaen , Benjamin Jäger , Seyong Kim , Maria Paola Lombardo , Sinead M. Ryan
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Jon-Ivar Skullerud
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classification hep-latnucl-th
keywords resultsbottomoniumspectralcomparedensemblesentropyfastsumfunction
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New results on bottomonium at nonzero temperature are presented, using the FASTSUM Generation 2L ensembles. Preliminary results for spectral function reconstruction using Kernel Ridge Regression, a machine learning technique, are shown as well and compared to results from the Maximum Entropy Method.

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  1. NRQCD Bottomonium at non-zero temperature using time-derivative moments

    hep-lat 2025-02 conditional novelty 4.0 of 10

    A time-derivative moment method applied to NRQCD lattice correlators extracts bottomonium masses and thermal widths, finding increasing width and decreasing mass with temperature.

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