Fractional double-phase patterns: concentration and multiplicity of solutions

By Vincenzo Ambrosio, Vicentiu D. Rădulescu. 2020

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Abstract We consider the following class of fractional problems with unbalanced growth: { ( − Δ ) p s u + ( − Δ ) q s u + V ( e x ) ( | u | p − 2 u + | u | q − 2 u ) = f ( u ) in  R N , u ∈ W s , p ( R N ) ∩ W s , q ( R N ) , u > 0 in  R N , where e > 0 is a small parameter, s ∈ ( 0 , 1 ) , 2 ≤ p q N s , ( − Δ ) t s (with t ∈ { p , q } ) is the fractional t-Laplacian operator, V : R N → R is a continuous potential satisfying local conditions, and f : R → R is a continuous nonlinearity with subcritical growth. Applying suitable variational and topological arguments, we obtain multiple positive solutions for e > 0 sufficiently small as well as related concentration properties, in relationship with the set where the potential V attains its minimum.

Subfields: Applied Mathematics, Computational Theory and Mathematics

View Paper: https://www.semanticscholar.org/paper/caeb68a9b6d84cf5db3fd41d964aad090fc0d4f6

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