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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

On linearly coupled systems of Schrödinger equations with critical growth

Melo Júnior, José Carlos de Albuquerque 24 February 2017 (has links)
Submitted by ANA KARLA PEREIRA RODRIGUES (anakarla_@hotmail.com) on 2017-08-25T13:08:29Z No. of bitstreams: 1 arquivototal.pdf: 1324370 bytes, checksum: 6a689c99393e6b9a2a7f27c49ef07a8d (MD5) / Made available in DSpace on 2017-08-25T13:08:29Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1324370 bytes, checksum: 6a689c99393e6b9a2a7f27c49ef07a8d (MD5) Previous issue date: 2017-02-24 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / In thisworkwestudytheexistenceofgroundstatesforthefollowingclassofcoupled systems involvingnonlinearSchrödingerequations 8<: 􀀀 u + V1(x)u = f1(x; u) + (x)v;x 2 RN; 􀀀 v + V2(x)v = f2(x; v) + (x)u; x 2 RN; where thepotentials V1 : RN ! R, V2 : RN ! R are nonnegativeandrelatedwith the couplingterm : RN ! R by j (x)j < pV1(x)V2(x), forsome 0 < < 1. In the case N = 2, thenonlinearities f1 e f2 havecriticalexponentialgrowthinthesense of Trudinger-Moserinequality.Inthecase N 3, thenonlinearitiesarepolynomials with subcriticalandcriticalexponentintheSobolevsense.Westudyalsothefollowing class ofnonlocalcoupledsystems 8<: (􀀀 )1=2u + V1(x)u = f1(u) + (x)v;x 2 R; (􀀀 )1=2v + V2(x)v = f2(v) + (x)u; x 2 R; where (􀀀 )1=2 denotes thesquarerootoftheLaplacianoperatorandthenonlinearities havecriticalexponentialgrowth.Ourapproachisvariationalandbasedon minimization techniqueovertheNeharimanifold / Neste trabalhoestudamosaexistênciadegroundstatesparaaseguinteclassede sistemas acopladosenvolvendoequaçõesdeSchrödingernão-lineares 8<: 􀀀 u + V1(x)u = f1(x; u) + (x)v;x 2 RN; 􀀀 v + V2(x)v = f2(x; v) + (x)u; x 2 RN; onde ospotenciais V1 : RN ! R, V2 : RN ! R são não-negativoseestãorelacionados com otermodeacomplamento : RN ! R por j (x)j < pV1(x)V2(x), paraalgum 0 < < 1. Nocaso N = 2, asnão-linearidades f1 e f2 possuemcrescimentocrítico exponencialnosentidodadesigualdadedeTrudinger-Moser.Nocaso N 3, asnão- linearidades sãopolinômioscomexpoentesubcríticoecríticonosentidodeSobolev. Estudamos aindaaseguinteclassedesistemasacopladosnão-locais 8<: (􀀀 )1=2u + V1(x)u = f1(u) + (x)v;x 2 R; (􀀀 )1=2v + V2(x)v = f2(v) + (x)u; x 2 R; onde (􀀀 )1=2 denota ooperadorraízquadradadolaplacianoeasnão-linearidades possuemcrescimentocríticoexponencial.Nossaabordagemévariacionalebaseadana técnica deminimizaçãosobreavariedadedeNehari.

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