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Nuclear Physics Seminars

ics Nuclear
Tuesday, March 29, 2016
3:30 PM
Physics Building, Room 204
Zhao Zhang
UVA - Department of Physics
"Coupled wire model of symmetric Majorana surfaces of topological superconductors "
ABSTRACT:

Time reversal symmetric topological superconductors in three spatial dimensions carry gapless surface Majorana fermions. They are robust against any time reversal symmetric single-body per- turbation weaker than the bulk energy gap. We mimic the massless surface Majorana’s by coupled wire models in two spatial dimensions. We introduce explicit many-body interwire interactions that preserve time reversal symmetry and give energy gaps to all low energy degrees of freedom. We show the gapped models generically carry non-trivial topological order and support anyonic excitations. 

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