| dc.description.abstract | In this paper, we discuss a novel method based on a quantum-information-tool suitable
to identify and characterize quantum-phases and phase transitions in a broad set of lattice models relevant in condensed-matter systems. The method relies on the entanglement
entropy which, for instance, can be calculated using the Matrix Product State (MPS)
algorithm, or any other method, for several system sizes to perform an appropriate scaling.
Particularly, this advanced method has been applied for a finite 1D system of repulsively
interacting spin-1 bosons and obtaining the universality class via the calculation of the
central charge for the external field-induced phase transition between the dimerized phase
and the XY-nematic phase in the antiferromagnetic regime. Finally, we briefly discuss how
this method has been recently used to identify topological phases. | |
