Domain Wall Bubbles in High Energy Heavy Ion Collisions

Abstract

It has been recently shown that meta-stable domain walls exist in high-density QCD ($\mu \ne 0$) as well as in QCD with large number of colors ($N_c\to \infty$), with the lifetime being exponentially long in both cases. Such metastable domain walls may exist in our world as well, especially in hot hadronic matter with temperature close to critical. In this paper we discuss what happens if a bubble made of such wall is created in heavy ion collisions, in the mixed phase between QGP and hadronic matter. We show it will further be expanded to larger volume $\sim 20f{m}^3$ by the pion pressure, before it disappears, either by puncture or contraction. Both scenarios leave distinctive experimental signatures of such events, negatively affecting the interference correlations between the outgoing pions.

6 pages, 1 fig

References in corpus (1)

• Domain walls of high-density QCD

Cited by in corpus (10)

• The Chiral Magnetic Effect
• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• Parity violation in hot QCD: why it can happen, and how to look for it
• Charge separation induced by P-odd bubbles in QCD matter
• Implications of CP-violating transitions in hot quark matter on heavy ion collisions
• Baryons in the Sakai-Sugimoto model in the D0-D4 background
• Collective Flow of QCD Matter: a Historical Introduction
• Electromagnetic instability and Schwinger effect in the Witten-Sakai-Sugimoto model with D0-D4 background
• Possibility of antiquark nuggets detection using meteor searching radars
• Microscopic composite systems bound by strong gravity in extra dimensions as candidates for dark matter