Chromoelectric flux tubes in QCD
Mario Salvatore Cardaci, Paolo Cea, Leonardo Cosmai, Rossella Falcone,, Alessandro Papa
TL;DR
This paper investigates the structure of chromoelectric flux tubes in SU(3) QCD, comparing with SU(2), and estimates the penetration length of the flux, providing insights into confinement mechanisms.
Contribution
It provides a detailed analysis of the chromoelectric flux tube profile in SU(3) and compares it with SU(2), including an estimate of the London penetration length.
Findings
Flux tube profile resembles dual Abrikosov vortex
Estimated London penetration length in SU(3)
Speculated ratio of penetration lengths between SU(2) and SU(3)
Abstract
We analyze the distribution of the chromoelectric field generated by a static quark-antiquark pair in the SU(3) vacuum and revisit previous results for SU(2). We find that the transverse profile of the flux tube resembles the dual version of the Abrikosov vortex field distribution. We give an estimate of the London penetration length of the chromoelectric field in the confined vacuum. We also speculate on the value of the ratio between the penetration lengths for SU(2) and SU(3) gauge theories.
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