An index for two-dimensional SPT states
نویسندگان
چکیده
We define an index for 2D G-invariant invertible states of bosonic lattice systems in the thermodynamic limit a finite symmetry group G with unitary action. show that this is invariant protected phase.
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ژورنال
عنوان ژورنال: Journal of Mathematical Physics
سال: 2021
ISSN: ['0022-2488', '1527-2427', '1089-7658']
DOI: https://doi.org/10.1063/5.0055704