RT Journal Article T1 Liquid polymorphism of simple fluids within a van der Waals theory A1 Fernández Tejero, Carlos A1 Baus, Marc AB We show how a van der Waals theory of simple fluids with an interaction potential whose range has a nonmonotonic density dependence can lead to a liquid-liquid transition in close analogy to recent observations and simulations. PB American Physical Society SN 1063-651X YR 1998 FD 1998-04 LK https://hdl.handle.net/20.500.14352/58872 UL https://hdl.handle.net/20.500.14352/58872 LA eng NO © 1998 The American Physical Society. M.B. acknowledges financial support from the Fonds National de la Recherche Scientifique (Belgium) and C.F.T. that from the Dirección General de Investigación Científica y Técnica (Spain), Grant No. PB94-0265. NO Fonds National de la Recherche Scientifique (Belgium) NO Dirección General de Investigación Científica y Técnica (Spain) DS Docta Complutense RD 22 abr 2025