4 papers
Excited-state quantum phase transitions and chaos in a three-level Lipkin model
Alberto Mayorgas, Pedro Pérez-Fernández, Álvaro Sáiz +1
Excited-state quantum phase transitions (ESQPTs) have been extensively studied in two-level models, but their characterization remains challenging in systems displaying mixed regul…
The extended Lipkin model: proposal for implementation in a quantum platform and machine learning analysis of its phase diagram
S. Baid, A. Sáiz, L. Lamata +5
We investigate the Extended Lipkin Model (ELM), whose phase diagram mirrors that of the Interacting Boson Approximation model (IBA). Unlike the standard Lipkin model, the ELM (as t…
At the edge of shape coexistence in the Z=40 region
Esperanza Maya-Barbecho, Samira Baid, José-Manuel Arias +1
In this contribution, the shape coexistence phenomenon near the proton sub-shell closure at Z=40 is analyzed. Particular emphasis is placed on extracting the nuclear deformation va…
At the borderline of shape coexistence: Mo and Ru
E. Maya-Barbecho, S. Baid, J. M. Arias +1
Background Even-even isotopes of Mo () and Ru () are nuclei close to the subshell closure at , where shape coexistence plays a significant role. As a result, thei…