This work has been supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement # 694248).
Citation:
J. Nissinen, G. E. Volovik, “Effective Minkowski to Euclidean signature change of the magnon BEC pseudo-Goldstone mode in polar $^3$He”, Pis'ma v Zh. Èksper. Teoret. Fiz., 106:4 (2017), 220–221; JETP Letters, 106:4 (2017), 234–241