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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/040/06/0477-0483

    • Keywords

       

      QCD vacuum; Nielsen-Olesen instability; quark gluon plasma; fluid equations; stabilization; phase transition

    • Abstract

       

      Nielsen and Olesen showed that perturbative vacuum with uniform chromomagnetic field in one space and one color direction is unstable. This instability is called Nielsen-Olesen instability (NOI), and leads to formation of a ‘spaghetti of flux tubes’ as a model for non-perturbative vacuum and confinement. We re-examine this instability in presence of color sources, quarks and gluons, at a finite temperature and find that at sufficiently high temperature NOI is stabilized due to an ‘effective mass’ of gluons arising through plasma effects. This explains how a QGP with no confinement effects may exist at high temperature. As the temperature is lowered, NOI reappears at a valueT=Tc, which is very close to confinement-deconfinement transition from hadrons to QGP..

    • Author Affiliations

       

      Vishnu M Bannur1 Predhiman K Kaw1

      1. Institute for Plasma Research, Bhat, Gandhinagar - 382 424, India
    • Dates

       
  • Pramana – Journal of Physics | News

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