Equivariant factorization-homology realization of the twisted Dennis trace

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Let RR be a CnC_n-ring spectrum. The twisted Dennis trace is a map

KCn(R)Cn→THH⁡Cn(R).\textnormal{K}_{C_n}(R)^{C_n} \to \operatorname{THH}_{C_n}(R).

Horev's identification gives

THH⁡Cn(R)≃ΦCn∫Srot1R,\operatorname{THH}_{C_n}(R) \simeq \Phi^{C_n} \int_{S^1_{\mathrm{rot}}} R,

where ∫Srot1R\int_{S^1_{\mathrm{rot}}} R is the CnC_n-equivariant factorization homology of the circle with rotation action and coefficients in RR. Equivariant factorization-homology realization conjecture. The twisted Dennis trace of Corollary arises from a CnC_n-equivariant map

KCn(R)→∫Srot1R.\textnormal{K}_{C_n}(R) \to \int_{S^1_{\mathrm{rot}}} R.

Such a map would refine the twisted Dennis trace before taking CnC_n-geometric fixed points. The conjecture is motivated by the equivariant factorization-homology description of twisted topological Hochschild homology; no resolution is given here.

References

Primary source

Katharine Adamyk, Teena Gerhardt, Kathryn Hess, Inbar Klang and Hana Jia Kong, “A shadow perspective on equivariant Hochschild homologies”, arXiv:2111.04152 (2022).

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