Matches in SemOpenAlex for { <https://semopenalex.org/work/W2040202367> ?p ?o ?g. }
- W2040202367 abstract "The surface of a 3+1d topological insulator hosts an odd number of gapless Dirac fermions when charge conjugation and time-reversal symmetries are preserved. Viewed as a purely 2+1d system, this surface theory would necessarily explicitly break parity and time-reversal when coupled to a fluctuating gauge field. Here we explain why such a state can exist on the boundary of a 3+1d system without breaking these symmetries, even if the number of boundary components is odd. This is accomplished from two complementary perspectives: topological quantization conditions and regularization. We first discuss the conditions under which (continuous) large gauge transformations may exist when the theory lives on a boundary of a higher-dimensional spacetime. Next, we show how the higher-dimensional bulk theory is essential in providing a parity-invariant regularization of the theory living on the lower-dimensional boundary or defect." @default.
- W2040202367 created "2016-06-24" @default.
- W2040202367 creator A5018996116 @default.
- W2040202367 creator A5074751940 @default.
- W2040202367 date "2013-08-05" @default.
- W2040202367 modified "2023-09-23" @default.
- W2040202367 title "Topological insulators avoid the parity anomaly" @default.
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- W2040202367 doi "https://doi.org/10.1103/physrevb.88.085104" @default.
- W2040202367 hasPublicationYear "2013" @default.
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