262 citations
- Universidade Federal da ParaíbaBR46 papers
- Universidade Federal de Minas GeraisBR27 papers
- Universidade Federal FluminenseBR20 papers
- Universidade de São PauloBR18 papers
- Universidade Federal do MaranhãoBR16 papers
- University of Pavol Jozef ŠafárikSK16 papers
- Universidade Federal de AlagoasBR14 papers
- Shahid Beheshti UniversityIR12 papers
- Universidade Federal dos Vales do Jequitinhonha e MucuriBR12 papers
- Centre National de la Recherche ScientifiqueFR10 papers
- Universidade Estadual Paulista (Unesp)BR10 papers
- A. Alikhanyan National LaboratoryAM9 papers
5 papers · 1 filter
Polynomials defining many units
Osnel Broche, Ángel del Río
We classify the polynomials with integral coefficients that, when evaluated on a group element of finite order , define a unit in the integral group ring for infinitely many pos…
Group theory for structural analysis and lattice vibrations in phosphorene systems
J. Ribeiro-Soares, R. M. Almeida, L. G. Cançado +2
Group theory analysis for two-dimensional elemental systems related to phosphorene is presented, including (i) graphene, silicene, germanene and stanene, (ii) dependence on the num…
On the particle-hole symmetry of the fermionic spinless Hubbard model in
M. T. Thomaz, E. V. Corrêa Silva, O. Rojas
We revisit the particle-hole symmetry of the one-dimensional () fermionic spinless Hubbard model, associating that symmetry to the invariance of the Helmholtz free energy of t…
Dual embedding of extended models with a Lorentz-breaking mass term
H. G. Fargnoli, L. C. T. Brito, A. P. Baêta Scarpelli +1
In this paper, we investigate a CPT-even model with a Lorentz-violating mass term. Such kind of models may present very interesting features like superluminal modes of propagation…
Rise of pairwise thermal entanglement for an alternating Ising and Heisenberg spin chain in an arbitrarily oriented magnetic field
M. Rojas, S. M. de Souza, Onofre Rojas
Typically two particles (spins) could be maximally entangled at zero temperature, and for a certain temperature the phenomenon of entanglement vanishes at the threshold temperature…