Rationality of Peskine varieties

We study the rationality of the Peskine sixfolds in P 9 . We prove the rationality of the Peskine sixfolds in the divisor D 3 , 3 , 10 inside the moduli space of Peskine sixfolds and we provide a cohomological condition which ensures the rationality of the Peskine sixfolds in the divisor D 1 , 6 , 1...

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Veröffentlicht in:Mathematische Zeitschrift 2024-06, Vol.307 (2), Article 26
Hauptverfasser: Benedetti, Vladimiro, Faenzi, Daniele
Format: Artikel
Sprache:eng
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Zusammenfassung:We study the rationality of the Peskine sixfolds in P 9 . We prove the rationality of the Peskine sixfolds in the divisor D 3 , 3 , 10 inside the moduli space of Peskine sixfolds and we provide a cohomological condition which ensures the rationality of the Peskine sixfolds in the divisor D 1 , 6 , 10 [(notation from Benedetti and Song (Divisors in the moduli space of Debarre-Voisin varieties, http://arxiv.org/abs/2106.06859 , 2021)]. We conjecture, as in the case of cubic fourfolds containing a plane, that the cohomological condition translates into a cohomological and geometric condition involving the Debarre-Voisin hyperkähler fourfold associated to the Peskine sixfold.
ISSN:0025-5874
1432-1823
DOI:10.1007/s00209-024-03498-5