Theory that vacuum becomes superconducting when the magnetic field is over 10 quadrillion tesla
Arxiv – Spontaneous electromagnetic superconductivity of vacuum in strong magnetic fi eld: an evidence from the Nambu{Jona-Lasinio model The required magnetic field dwarfs even the most magnetic things in the universe today – neutron stars called magnetars, which boast fields of up to 10^11 Tesla. Using an extended Nambu{Jona-Lasinio model as a low energy e …