RT Journal Article T1 Inverse amplitude method and Adler zeros A1 Gómez Nicola, Ángel A1 Peláez Sagredo, José Ramón A1 Rios, G. AB The inverse amplitude method is a powerful unitarization technique to enlarge the energy applicability region of effective Lagrangians. It has been widely used to describe resonances in hadronic physics, combined with chiral perturbation theory, as well as in the strongly interacting symmetry breaking sector. In this work we show how it can be slightly modified to also account for the subthreshold region, incorporating correctly the Adler zeros required by chiral symmetry and eliminating spurious poles. These improvements produce negligible effects on the physical region. PB Amer Physical Soc SN 1550-7998 YR 2008 FD 2008-03 LK https://hdl.handle.net/20.500.14352/51385 UL https://hdl.handle.net/20.500.14352/51385 LA eng NO ©2 008 The American Physical Society.Research was partially funded by Banco Santander/Complutense Contract No. PR27/05-13955- SCH and Spanish Contract No. FPA2007-29115-E, No. FPA2005-02327, No. FPA2004-02602, and No. UCM-CAM 910309. J. R. Peláez’s research is partly funded by Spanish Contract No. BFM2003-00856, and is part of the EU integrated infrastructure initiative HadronPhysics project, under Contract No. RII3-CT-2004-506078. NO Banco Santander / Complutense NO Spanish Contract NO HadronPhysics project NO UCM-CAM DS Docta Complutense RD 11 may 2025