Evidence from lattice data for a new particle on the worldsheet of the QCD flux tube

Sergei Dubovsky, Raphael Flauger, Victor Gorbenko

    Research output: Contribution to journalArticle


    We propose a new approach for the calculation of the spectrum of excitations of QCD flux tubes. It relies on the fact that the worldsheet theory is integrable at low energies. With this approach, energy levels can be calculated for much shorter flux tubes than was previously possible, allowing for a quantitative comparison with existing lattice data. The improved theoretical control makes it manifest that existing lattice data provides strong evidence for a new pseudoscalar particle localized on the QCD flux tube - the worldsheet axion.

    Original languageEnglish (US)
    Article number062006
    JournalPhysical Review Letters
    Issue number6
    StatePublished - Aug 9 2013


    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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