8 papers
Optical selection rules of topological excitons in flat bands
Mara Lozano, Hong-Yi Xie, Bruno Uchoa
Topological excitons are superpositions of electron-hole pair states, characterized by an envelope function with finite vorticity in momentum space. This vorticity is determined by…
On generic singularities of intersections of ellipsoids: the octahedron
Enrique Artal Bartolo, Santiago López de Medrano, María Teresa Lozano
The goal of this work is to study the smoothings of singular coaxial intersections of ellipsoids (where coaxial includes concentric) with generic singularities, with special attent…
Numerical groups
María Teresa Lozano, José María Montesinos-Amilibia
A group of matrices with entries in a number field is defined to be numerical if has a finite index subgroup of matrices whose entries are algebraic integers. It is sho…
On continuous families of geometric Seifert conemanifold structures
María Teresa Lozano, José María Montesinos-Amilibia
We determine the Thurston's geometry possesed by any Seifert fibered conemanifold structure in a Seifert manifold with orbit space and no more than three exceptional fibres,…
Geometric conemanifold structures on , the result of surgery in the left-handed trefoil knot
María Teresa Lozano, José María Montesinos-Amilibia
As an example of the transitions between some of the eight geometries of Thurston, investigated before, we study the geometries supported by the cone-manifolds obtained by surgery…
On the affine representations of the trefoil knot group
Hugh M. Hilden, Maria Teresa Lozano, Jose Maria Montesinos-Amilibia
The complete classification of representations of the Trefoil knot group G in S^{3} and SL(2,R), their affine deformations, and some geometric interpretations of the results, are g…