Phase diagram of the topologically frustrated XY chain Daniel Sacco Shaikh, Alberto Giuseppe Catalano, Fabio Cavaliere, Fabio Franchini, Maura Sassetti and Niccolò Traverso Ziani Eur. Phys. J. Plus, 139 8 (2024) 743 Published online: 19 August 2024 DOI: 10.1140/epjp/s13360-024-05534-z