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Abstract: We consider the nonlinear elliptic problem where and with . It is known that as , the number of nonequivalent solutions of the above problem goes to ∞ when , . Here we prove the same phenomenon for any by finding -symmetric clustering bump solutions which concentrate near the set for large . [Copyright &y& Elsevier]

Abstract: We study standing waves for nonlinear Schrödinger equations with the gauge field. Some existence results of standing waves are established by applying variational methods to the functional which is obtained by representing the gauge field in terms of complex scalar field ϕ. We also show that there exists no standing wave for certain range of parameters by establishing a new inequality of Sobolev type. [Copyright &y& Elsevier]

Abstract: This paper is concerned with the qualitative property of the ground state solutions for the Hénon equation. By studying a limiting equation on the upper half space , we investigate the asymptotic energy and the asymptotic profile of the ground states for the Hénon equation. The limiting problem is related to a weighted Sobolev type inequality which we establish in this paper. [Copyright &y& Elsevier]