We argue that in the Copenhagen ("spaghetti") picture of the QCD vacuum the chromomagnetic flux tubes exhibit chromoelectric superconductivity. We show that the superconducting chromoelectric currents in the tubes may be induced by the topological charge density. © 2014 The Authors.
Chernodub, M. N., Kalaydzhyan, T., Van Doorsselaere, J., & Verschelde, H. (2014). On chromoelectric (super)conductivity of the Yang-Mills vacuum. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 730, 63–66. https://doi.org/10.1016/j.physletb.2014.01.029