%0 Journal Article %T Pulling back torsion line bundles to ideal classes %A Jean Gillibert %A Aaron Levin %J Mathematics %D 2011 %I arXiv %X We prove results concerning the specialisation of torsion line bundles on a variety $V$ defined over $\mathbb{Q}$ to ideal classes of number fields. This gives a new general technique for constructing and counting number fields with large class group. %U http://arxiv.org/abs/1109.3723v2