Pome

Problem 24.10.44C662988834F

Problem 24.10.4.4C662988834F Let $C$ be a connected compact Riemann surface, let $x\in C$, and let $(L,h)$ be a smooth Hermitian holomorphic line bundle whose curvature is semipositive and strictly positive on $C\setminus \{ x\} $. Fix an integer $r\geq 1$. Suppose that in a local coordinate $z$ centered at $x$ and a holomorphic frame $e$ one has

\[ |e|_ h^2=\mathrm{e}^{-\phi },\qquad \phi (z)=|z|^{2r}+O(|z|^{2r+1}). \]

Let $\nu $ be a smooth positive volume form with local expression $a(z)\, \mathrm{d}A$ and $a(0)=1$, where $\mathrm{d}A$ is Euclidean area. For positive integers $m$, choose integers $q_ m\to \infty $ with $q_ m=o(m)$. Give

\[ V_ m=H^0(C,L^ m\otimes \mathfrak m_ x^{q_ m}) \]

the norm $\| s\| ^2=\int _ C|s|_{h^ m}^2\, \mathrm{d}\nu $, where $\mathfrak m_ x$ is the ideal sheaf of $x$. Write $B_ m=\sum _ j|s_{m,j}|_{h^ m}^2$ for an orthonormal basis $(s_{m,j})$ of $V_ m$, with value zero when $V_ m=0$. Determine the growth ranges of $q_ m$ for which, for each fixed real $\tau $, every sequence of points $x_ m$ in the coordinate neighborhood satisfying

\[ m|z(x_ m)|^{2r}=q_ m/r+\tau \sqrt{q_ m/r} \]

obeys

\[ \frac{\pi B_ m(x_ m)}{mr^2|z(x_ m)|^{2r-2}} \longrightarrow \Phi (\tau ):=\frac1{\sqrt{2\pi }}\int _{-\infty }^{\tau } \mathrm{e}^{-s^2/2}\, \mathrm{d}s. \]

When this transition law fails, determine how further terms of the local weight change its center and scale.

Cite this page

Comments

Corrections, questions, and mathematical discussion are welcome. Sign in with GitHub to comment. Comments are public.