RT Journal Article T1 Entropy maximization in the free expansion process A1 Fernández Pineda, Cristóbal A1 Velasco Maíllo, Santiago AB The entropy maximum principle is applied to obtain the final equilibrium state in the free expansion of a perfect gas. This provides an example where the entropy of an isolated system at equilibrium has an absolute maximum which is not a local maximum. PB IOP Publishing Ltd. SN 0143-0807 YR 2005 FD 2005-07 LK https://hdl.handle.net/20.500.14352/50886 UL https://hdl.handle.net/20.500.14352/50886 LA eng NO © 2005 IOP Publishing Ltd. SV thanks financial support by Comisión Interministerial de Ciencia y Tecnología (CICYT)of Spain under grants BFM 2002-01225 FEDER and BFM 2003-07106 FEDER, and by Junta de CyL-FSE of Spain under grants SA080/04 and SA092/04. NO Comisión Interministerial de Ciencia y Tecnología (CICYT) of Spain NO Junta de CyL-FSE of Spain DS Docta Complutense RD 6 abr 2025