TY - GEN AU - Carvajal, Miguel AU - Khalouf Rivera, Jamil AU - Pérez Bernal, Francisco PY - 2022 UR - http://hdl.handle.net/10481/74452 AB - In most cases, excited-state quantum phase transitions can be associated with the existence of critical points (local extrema or saddle points) in a system’s classical limit energy functional. However, an excited-state quantum phase transition might... LA - eng PB - American Physical Society TI - Anharmonicity-induced excited-state quantum phase transition in the symmetric phase of the two-dimensional limit of the vibron model DO - 10.1103/PhysRevA.105.032215 ER -