A geometric model for complex analytic equivariant elliptic cohomology
A geometric model for complex analytic equivariant elliptic cohomology
复制标题
复解析等变椭圆上同调的几何模型
DOI:
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
A. Tripathy
中科院分区:
文献类型:
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作者:
Daniel Berwick;A. Tripathy
We construct a geometric model for complex analytic equivariant elliptic cohomology for all compact Lie groups $G$. Cocycles are functions on a rigorously defined space of dimensionally reduced classical fields for the two-dimensional gauged $\sigma$-model with $\mathcal{N} = (0, 1)$ supersymmetry. This connection to physics provides means of constructing privileged cocycles. Given a representation $R$ of a group $G$, the partition function of an $R$-valued free fermion theory (made rigorous by $\zeta$-regularization) yields a cocycle representative of the equivariant elliptic Euler class. For $G=U(n)$ and $R$ its standard $n$-dimensional representation, we identify this Euler cocycle with the character of the level 1 loop group representation of $LU(n)$. Finally, in the special case of $G = U(1)$, the Euler cocycle encodes the group law of the (dual) elliptic curve. This provides a geometric and physical manifestation of the elliptic formal group law central to the homotopy theoretic construction of elliptic cohomology.
DOI:
10.1007/s00029-019-0451-5
发表时间:
2019
期刊:
Selecta Mathematica
影响因子:
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作者:
Rimányi, R.;Tarasov, V.;Varchenko, A.
通讯作者:
Varchenko, A.
DOI:
10.3842/sigma.2018.132
发表时间:
2018
期刊:
Integrability and Geometry: Methods and Applications
影响因子:
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作者:
Felder, Giovanni;Rimány, Richárd;Varchenko, Alexander
通讯作者:
Varchenko, Alexander