TY  - JOUR
AU  - Viyuela García, Óscar
AU  - Rivas Vargas, Ángel
AU  - Martín-Delgado Alcántara, Miguel Ángel
PY  - 2014
DO  - 10.1103/PhysRevLett.113.076408
SN  - 0031-9007
UR  - https://hdl.handle.net/20.500.14352/35592
T2  - Physical review letters
AB  - We construct a topological invariant that classifies density matrices of symmetry-protected topological orders in two-dimensional fermionic systems. As it is constructed out of the previously introduced Uhlmann phase, we refer to it as the topological...
LA  - eng
PB  - American Physical Society
KW  - Superconductors
KW  - States
KW  - Insulators
KW  - computation
KW  - Degeneracy
KW  - Statistics
KW  - Vortices
KW  - Parity
KW  - Space
KW  - Model.
TI  - Two-dimensional density-matrix topological fermionic phases: topological Uhlmann numbers
TY  - journal article
VL  - 113
ER  -