RT Journal Article T1 Bell inequalities from multilinear contractions A1 Wolf, Michael A1 Pérez García, David A1 Salles, Alejo A1 Cavalcanti, Daniel A1 Acín, Antonio AB We provide a framework for Bell inequalities which is based on multilinear contractions. The derivation of the inequalities allows for an intuitive geometric depiction and their violation within quantum mechanics can be seen as a direct consequence of non-vanishing commutators. The approach is motivated by generalizing recent work on non-linear inequalities which was based on the moduli of complex numbers, quaternions and octonions. We extend results on Peres’ conjecture about the validity of Bell inequalities for quantum states with positive partial transposes. Moreover, we show the possibility of obtaining unbounded quantum violations albeit we also prove that quantum mechanics can only violate the derived inequalities if three or more parties are involved. PB Rinton Press SN 1533-7146 YR 2010 FD 2010 LK https://hdl.handle.net/20.500.14352/41899 UL https://hdl.handle.net/20.500.14352/41899 LA eng NO Unión Europea. FP7 NO QUANTOP NO e Danish Research Council (FNU) DS Docta Complutense RD 21 abr 2025