English

Hypersurfaces quartiques de dimension 3 : non rationalit\'e stable

Algebraic Geometry 2015-06-02 v4

Abstract

Inspir\'es par un argument de C. Voisin, nous montrons l'existence d'hypersurfaces quartiques lisses dans PC4{\bf P}^4_{\mathbb C} qui ne sont pas stablement rationnelles, plus pr\'ecis\'ement dont le groupe de Chow de degr\'e z\'ero n'est pas universellement \'egal \`a Z\mathbb Z. --- There are (many) smooth quartic hypersurfaces in PC4{\bf P}^4_{\mathbb C} which are not stably rational. More precisely, their degree zero Chow group is not universally equal to Z\mathbb Z. The proof uses a variation of a specialisation method due to C. Voisin.

Keywords

Cite

@article{arxiv.1402.4153,
  title  = {Hypersurfaces quartiques de dimension 3 : non rationalit\'e stable},
  author = {Jean-Louis Colliot-Thélène and Alena Pirutka},
  journal= {arXiv preprint arXiv:1402.4153},
  year   = {2015}
}

Comments

in French. More applications of the method are given : quartic threefolds defined over the algebraic closure of the rationals, cubic threefolds over a p-adic field. Final version, to appear in Annales Sc. Ec. Norm. Sup

R2 v1 2026-06-22T03:10:05.761Z