Andreev reflection at Hadron/Color superconductor interface

TL;DR

This paper explores Andreev reflection phenomena at the interface between hadronic matter and color superconducting phases, relevant to neutron star interiors, revealing unique reflection patterns for incident hadrons.

Contribution

It introduces a novel analysis of Andreev reflection involving hadrons at the hadron/superconductor interface, extending concepts from condensed matter to nuclear astrophysics.

Findings

Identifies possible reflection patterns for mesons and baryons.

Reveals peculiar reflection behaviors depending on the superconducting phase.

Provides insights into neutron star interior physics.

Abstract

We consider the phenomenon of the Andreev reflection of "hadrons" at the interface between hadronic and color superconducting phases, which are expected to appear in the neutron star interior. Here, hadrons are defined as a superposition of constituent quarks, each of which is Andreev-reflected. We study what kind of reflections are possible to come out of incident mesons and baryons in the hadronic phase, attached to different color superconducting phases. Then, some peculiar patterns of the reflections are obtained.