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Cyclic orbifolds of lattice vertex operator algebras having group-like fusions
Letters in Mathematical Physics ( IF 1.3 ) Pub Date : 2019-12-18 , DOI: 10.1007/s11005-019-01251-2
Ching Hung Lam

Let L be an even (positive definite) lattice and $$g\in O(L)$$ g ∈ O ( L ) . In this article, we prove that the orbifold vertex operator algebra $$V_{L}^{{\hat{g}}}$$ V L g ^ has group-like fusion if and only if g acts trivially on the discriminant group $${\mathcal {D}}(L)=L^*/L$$ D ( L ) = L ∗ / L (or equivalently $$(1-g)L^*

中文翻译:

具有类群融合的格顶点算子代数的循环orbifolds

令 L 为偶数(正定)格且 $$g\in O(L)$$ g ∈ O ( L ) 。在本文中,我们证明了 orbifold 顶点算子代数 $$V_{L}^{{\hat{g}}}$$ VL g ^ 具有类群融合当​​且仅当 g 对判别群 $ 的作用微不足道${\mathcal {D}}(L)=L^*/L$$ D ( L ) = L ∗ / L (或等价的 $$(1-g)L^*
更新日期:2019-12-18
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