The Berezinskii Kosterlitz Thouless phase transition is of second-order in the microcanonical ensemble

Ghofrane Bel-Hadj-Aissa, Matteo Gori

A paradigmatic example of a phase transition taking place in the absence of symmetry-breaking is provided by the Berezinkii-Kosterlitz-Thouless (BKT) transition in the two-dimensio…