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Lower bounds on the radius of analyticity for a system of nonlinear quadratic interactions of the Schrödinger-type equations

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Author(s):
Figueira, Renata O. ; Nogueira, Marcelo ; Panthee, Mahendra
Total Authors: 3
Document type: Journal article
Source: ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK; v. 75, n. 4, p. 14-pg., 2024-08-01.
Abstract

In this paper, we study the Cauchy problem for a system of nonlinear Schrodinger equations with quadratic interactions and initial data belonging to a class of analytic Gevrey functions. Here, we present a local well-posedness result in the analytic Gevrey class G(sigma,s )x G(sigma,s )by proving some bilinear estimates in Bourgain's space with exponential weight. Furthermore, we prove that the obtained solution can be extended to any time T>0, as long as the radius of the spatialanalyticity sigma is bounded below by cT(-2), if 0 < a < 1/2, or cT(-4),if a>1/2. (AU)

FAPESP's process: 23/06416-6 - Nonlinear phenomena and dispersion
Grantee:Mahendra Prasad Panthee
Support Opportunities: Regular Research Grants
FAPESP's process: 21/04999-9 - Evolution of the radius of analyticity for dispersive equations and systems involving them
Grantee:Renata de Oliveira Figueira
Support Opportunities: Scholarships in Brazil - Post-Doctoral