Abstract
In this paper, we study special cycles on the Krämer model of \(\mathrm {U}(1,1)(F/F_0)\)-Rapoport–Zink spaces where \(F/F_0\) is a ramified quadratic extension of p-adic number fields with the assumption that the 2-dimensional hermitian space of special quasi-homomorphisms is anisotropic. We write down the decomposition of these special cycles and prove a version of Kudla–Rapoport conjecture in this case. We then apply the local results to compute the intersection numbers of special cycles on unitary Shimura curves and relate these intersection numbers to Fourier coefficients of central derivatives of certain Eisenstein series.
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