2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/107758The Cauchy problem for a modified Zakharov system is proven to be locally well-posed for rough data in two and three space dimensions. In the three dimensional case the problem is globally well-posed for data with small energy. Under this assumption there also exists a global classical solution for sufficiently smooth data.30 pages. Final version to appear in Hokkaido Mathematical JournalAnalysis of PDEs35Q55; 35L70text