Spectral correspondence between Frobenius eigenvalues and Hamiltonian spectral numbers

Let HH be a non-degenerate Hamiltonian on MM, let UU be the base of the associated Frobenius structure on a vector bundle EE, and let XEX_E be its Euler vector field. The 'eigenvalues' of XE\nabla X_E are defined by evaluating the closed part, via Hodge decomposition, of the End(E)\operatorname{End}(E)-valued one-form associated to XE\nabla X_E on a set of generators of H1(U,Z)H_1(U,\mathbb{Z}). Let ξH1(U,R)\xi\in H^1(U,\mathbb{R}) and let U~ξ\widetilde U_\xi be the corresponding space used to define the spectral numbers ρ(H,a)\rho(H,a) for aH(U~ξ,Z)a\in H_*(\widetilde U_\xi,\mathbb{Z}). Spectral correspondence conjecture. The 'eigenvalues' of XE\nabla X_E over UU, equivalently the spectrum of the Frobenius structure :TUEnd(E)\star:TU\rightarrow\operatorname{End}(E) and the spectral numbers of the variation of Hodge structures associated to HH, coincide generically, after eventual affine scaling, with the spectral numbers ρ(H,a)\rho(H,a) of HH as aa ranges over all elements of H(U~ξ,Z)H_*(\widetilde U_\xi,\mathbb{Z}). This conjecture proposes a correspondence between the spectral invariants of Hamiltonian dynamics and the spectral data of the associated Frobenius and Hodge structures; the paper presents it as a conjectural complement to Theorem 1, and no resolution is supplied in the given text.

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Primary source

Andreas Klein, “Hamiltonian spectral invariants, symplectic spinors and Frobenius structures I”, arXiv:1411.4237 (2016).

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