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Derived categories of curves of genus one and torsors over abelian varieties

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abstract

Suppose $C$ is a smooth projective curve of genus 1 over a perfect field $F$, and $E$ is its Jacobian. In the case that $C$ has no $F$-rational points, so that $C$ and $E$ are not isomorphic, $C$ is an $E$-torsor with a class $\delta(C)\in H^1(\text{Gal}(\bar F/F), E(\bar F))$. Then $\delta(C)$ determines a class $\beta \in \text{Br}(E)/\text{Br}(F)$ and there is a Fourier-Mukai equivalence of derived categories of (twisted) coherent sheaves $\mathcal D(C) \xrightarrow{\cong} \mathcal D(E, \beta^{-1})$. We generalize this result to higher dimensions; namely, we prove it also for torsors over abelian varieties.

fields

hep-th 1

years

2025 1

verdicts

CONDITIONAL 1

representative citing papers

Orientifolds for F-theory on K3 Surfaces

hep-th · 2025-01-30 · conditional · novelty 6.0

A rank-17 lattice-polarized family of K3 surfaces is shown to degenerate to Kummer surfaces whose string limits realize the three O-plane charge spectra (+,+,+,+), (+,+,-,-), and (+,+,+,-).

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  • Orientifolds for F-theory on K3 Surfaces hep-th · 2025-01-30 · conditional · none · ref 44 · internal anchor

    A rank-17 lattice-polarized family of K3 surfaces is shown to degenerate to Kummer surfaces whose string limits realize the three O-plane charge spectra (+,+,+,+), (+,+,-,-), and (+,+,+,-).