Fibering polarizations and Mabuchi rays on symmetric spaces of compact type
arxiv(2024)
摘要
In this paper, we describe holomorphic quantizations of the cotangent bundle
of a symmetric space of compact type T^*(U/K)≅ U_ℂ/K_ℂ,
along Mabuchi rays of U-invariant Kähler structures. At infinite geodesic
time, the Kähler polarizations converge to a mixed polarization
𝒫_∞. We show how a generalized coherent state transform
relates the quantizations along the Mabuchi geodesics such that holomorphic
sections converge, as geodesic time goes to infinity, to distributional
𝒫_∞-polarized sections. Unlike in the case of T^*U, the gCST
mapping from the Hilbert space of vertically polarized sections are not
asymptotically unitary due to the appearance of representation dependent
factors associated to the isotypical decomposition for the U-action. In
agreement with the general program outlined in [Bai+23], we also describe how
the quantization in the limit polarization 𝒫_∞ is given by the
direct sum of the quantizations for all the symplectic reductions relative to
the invariant torus action associated to the Hamiltonian action of U.
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