Artículos de revistas
Effective Response Theory For Zero-energy Majorana Bound States In Three Spatial Dimensions
Registro en:
Effective Response Theory For Zero-energy Majorana Bound States In Three Spatial Dimensions. Amer Physical Soc, v. 91, p. MAY-2015.
1098-0121
WOS:000355089900004
10.1103/PhysRevB.91.184111
Autor
Lopes
Pedro L. e S.; Teo
Jeffrey C. Y.; Ryu
Shinsei
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) We propose a gravitational response theory for point defects (hedgehogs) binding Majorana zero modes in (3 + 1)-dimensional superconductors. Starting in 4 + 1 dimensions, where the point defect is extended into a line, a coupling of the bulk defect texture with the gravitational field is introduced. Diffeomorphism invariance then leads to an SU(2)(2) Kac-Moody current running along the defect line. The SU(2)(2) Kac-Moody algebra accounts for the non-Abelian nature of the zero modes in 3 + 1 dimensions. It is then shown to also encode the angular momentum density which permeates throughout the bulk between hedgehog-antihedgehog pairs. 91 18
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) NSF [DMR-1455296] Alfred P. Sloan Foundation Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)