Continuous Kraus conjecture for continuous Parseval frames

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Let (Ω,μ)(\Omega,\mu) and (Δ,ν)(\Delta,\nu) be measure spaces, let H\mathcal{H} be a Hilbert space, and let {τα}α∈Ω\{\tau_\alpha\}_{\alpha\in\Omega} and {ωβ}β∈Δ\{\omega_\beta\}_{\beta\in\Delta} be 11-bounded continuous Parseval frames for H\mathcal{H}. For h∈Hτ∩Hωh\in\mathcal{H}_\tau\cap\mathcal{H}_\omega, write Sτ(h)S_\tau(h) and Sω(h)S_\omega(h) for the corresponding frame entropies. Continuous Kraus conjecture. Then

Sτ(h)+Sω(h)≥−2log⁡(sup⁡α∈Ω, β∈Δ∣⟨τα,ωβ⟩∣)≥0,S_\tau(h)+S_\omega(h)\geq -2\log\left(\sup_{\alpha\in\Omega,\,\beta\in\Delta}|\langle\tau_\alpha,\omega_\beta\rangle|\right)\geq 0,

for all h∈Hτ∩Hωh\in\mathcal{H}_\tau\cap\mathcal{H}_\omega. This conjecture proposes a continuous-frame analogue of the Kraus entropic uncertainty principle; its status is not resolved in the supplied source context.

References

Primary source

K. Mahesh Krishna, “Continuous Deutsch Uncertainty Principle and Continuous Kraus Conjecture”, arXiv:2310.01450 (2023).

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