The quantum fluctuations in the vicinity of Weyl point

Superconductors exhibit unique charge transport, leading to intriguing interface phenomena with normal metals. Electrons and holes form closed trajectories at specific energies, known as Andreev-bound states. It is possible to envision a situation where Andreev-bound states can cross in superconducting phase space, forming Weyl points. But what if the superconducting phases are not fixed and are…