Eur. Phys. J. A (2017) 53: 63
https://doi.org/10.1140/epja/i2017-12249-x

Regular Article - Theoretical Physics

Landau damping of gluons in the two-flavor color superconducting Fulde-Ferrell phase

TIFR, Homi Bhabha Road, Navy Nagar, 400005, Mumbai, India

^* e-mail: rishi@theory.tifr.res.in

Received: 12 January 2017
Accepted: 6 March 2017
Published online: 31 March 2017

Abstract

We clarify aspects of gluon propagation in the two-flavor crystalline color superconducting phase of quark matter by analyzing the screening and Landau damping of gluons in the two-flavor Fulde-Ferrell (FF) phase. The paired quarks in the FF phase feature gapless excitations and therefore lead to Debye screening of the longitudinal , , and gluons and Landau damping of transverse , , and gluons. This is a marked difference from the 2SC phase where both of these are unscreened. The transverse , , and gluons are long ranged in the zero energy limit and hence the interaction mediated by these is the most important mechanism for the scattering of the paired quarks. Therefore they play an important role in determining their transport properties.