The conjecture on asymptotic expansion of Bergman kernels

Let XX be a smooth projective variety of dimension nn, let (L,hL)(L,h_L) be a pseudoeffective singular Hermitian line bundle on XX, and let AA be a sufficiently ample line bundle on XX with a CC^{\infty} Hermitian metric hAh_A of strictly positive curvature. Let dμ+(L,hL)d\mu^{+}(L,h_L) and dμ(L,hL)d\mu^{-}(L,h_L) denote the upper and lower local volumes defined by the corresponding limsup and liminf of the normalized Bergman kernels.

Bergman-kernel asymptotics conjecture. The upper and lower local volumes coincide:

dμ+(L,hL)=dμ(L,hL).d\mu^{+}(L,h_L)=d\mu^{-}(L,h_L).

In particular, the normalized Bergman-kernel limit exists on XX, and it equals the local volume dμ(L,hL)d\mu(L,h_L):

n!limmmnhAhLmK(X,KX+A+mL,hAhLm)=dμ(L,hL).n!\cdot\lim_{m\rightarrow\infty}m^{-n}\cdot h_A\cdot h_L^m\cdot K(X,K_X+A+mL,h_A\cdot h_L^m)=d\mu(L,h_L).

The claim concerns the existence and identification of pointwise asymptotics for Bergman kernels associated with pseudoeffective singular metrics. The source presents it as a general conjecture; no resolution is supplied there.

Sources & referencesView supporting material

Primary source

Hajime Tsuji, “Extension of log pluricanonical forms from subvarieties”, arXiv:0709.2710 (2007).

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