13 citations · 22 across the 2 of their papers we have counts for
2 papers
cond-mat.stat-mech2020★ 13 cited
Multicriticality in a one-dimensional topological band insulator
Mariana Malard, David Brandao, Paulo Eduardo de Brito +1
A central tenet in the theory of quantum phase transitions (QPTs) is that a nonanalyticity in the ground-state energy in the thermodynamic limit implies a QPT. Here we report on a…
cond-mat.str-el2018★ 9 cited
Movable but not removable band degeneracies in a symmorphic crystal
Mariana Malard, Paulo Eduardo de Brito, Stellan Ostlund +1
Crossings of energy bands in solids that are not pinned at symmetry points in the Brillouin zone and yet cannot be removed by perturbations are thought to be conditioned on the pre…