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arXiv · 1505.06778

Cyclotomic structure in the topological Hochschild homology of $DX$

Cary Malkiewich
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Abstract

Let $X$ be a finite CW complex, and let $DX$ be its dual in the category of spectra. We demonstrate that the Poincar\'e/Koszul duality between $THH(DX)$ and the free loop space $\Sigma^\infty_+ LX$ is in fact a genuinely $S^1$-equivariant duality that preserves the $C_n$-fixed points. Our proof uses an elementary but surprisingly useful rigidity theorem for the geometric fixed point functor $\Phi^G$ of orthogonal $G$-spectra.

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Cary Malkiewich. 2015-05-25. Cyclotomic structure in the topological Hochschild homology of $DX$. https://doi.org/10.2140/agt.2017.17.2307

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