<p>For <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(N\ge 3\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>N</mi> <mo>≥</mo> <mn>3</mn> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(2&lt;p&lt;N\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>2</mn> <mo>&lt;</mo> <mi>p</mi> <mo>&lt;</mo> <mi>N</mi> </mrow> </math></EquationSource> </InlineEquation>, we find normalised solutions to the equation <Equation ID="Equ58"> <EquationSource Format="TEX">\(\begin{aligned} -\Delta _p u+(1+V(x))|u|^{p-2}u+\lambda u&amp;=|u|^{q-2}u\qquad \text {in }\,\, {\mathbb {R}}^{N}\\ \Vert u\Vert _2&amp;=\rho \end{aligned}\)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <mrow> <mtable> <mtr> <mtd columnalign="right"> <mrow> <mo>-</mo> <msub> <mi mathvariant="normal">Δ</mi> <mi>p</mi> </msub> <mi>u</mi> <mo>+</mo> <mrow> <mo stretchy="false">(</mo> <mn>1</mn> <mo>+</mo> <mi>V</mi> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">)</mo> </mrow> <msup> <mrow> <mo stretchy="false">|</mo> <mi>u</mi> <mo stretchy="false">|</mo> </mrow> <mrow> <mi>p</mi> <mo>-</mo> <mn>2</mn> </mrow> </msup> <mi>u</mi> <mo>+</mo> <mi>λ</mi> <mi>u</mi> </mrow> </mtd> <mtd columnalign="left"> <mrow> <mo>=</mo> <msup> <mrow> <mo stretchy="false">|</mo> <mi>u</mi> <mo stretchy="false">|</mo> </mrow> <mrow> <mi>q</mi> <mo>-</mo> <mn>2</mn> </mrow> </msup> <mi>u</mi> <mspace width="2em" /> <mi mathvariant="normal">in</mi> <mspace width="0.166667em" /> <mspace width="0.166667em" /> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi mathvariant="normal">N</mi> </msup> </mrow> </mtd> </mtr> <mtr> <mtd columnalign="right"> <msub> <mrow> <mrow /> <mo stretchy="false">‖</mo> <mi>u</mi> <mo stretchy="false">‖</mo> </mrow> <mn>2</mn> </msub> </mtd> <mtd columnalign="left"> <mrow> <mo>=</mo> <mi>ρ</mi> </mrow> </mtd> </mtr> </mtable> </mrow> </math></EquationSource> </Equation>in the mass supercritical and Sobolev subcritical case, that is <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(q\in \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>q</mi> <mo>∈</mo> </mrow> </math></EquationSource> </InlineEquation> <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\((p\frac{N+2}{N},\frac{Np}{N-p})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo stretchy="false">(</mo> <mi>p</mi> <mfrac> <mrow> <mi>N</mi> <mo>+</mo> <mn>2</mn> </mrow> <mi>N</mi> </mfrac> <mo>,</mo> <mfrac> <mrow> <mi mathvariant="italic">Np</mi> </mrow> <mrow> <mi>N</mi> <mo>-</mo> <mi>p</mi> </mrow> </mfrac> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation>, at least if <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(\rho &gt;0\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>ρ</mi> <mo>&gt;</mo> <mn>0</mn> </mrow> </math></EquationSource> </InlineEquation> is small enough. The function <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(V\in L^{N/p}({\mathbb {R}}^{N})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>V</mi> <mo>∈</mo> <msup> <mi>L</mi> <mrow> <mi>N</mi> <mo stretchy="false">/</mo> <mi>p</mi> </mrow> </msup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>, which plays the role of potential, is assumed to be non-positive and vanishing at infinity. Moreover, we will prove the compactness of the embedding of the space of radial functions <InlineEquation ID="IEq9"> <EquationSource Format="TEX">\(W^{1,p}_{rad}({\mathbb {R}}^{N})\subset L^q({\mathbb {R}}^{N})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mi>W</mi> <mrow> <mi mathvariant="italic">rad</mi> </mrow> <mrow> <mn>1</mn> <mo>,</mo> <mi>p</mi> </mrow> </msubsup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> <mo>⊂</mo> <msup> <mi>L</mi> <mi>q</mi> </msup> <mrow> <mo stretchy="false">(</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> for <InlineEquation ID="IEq10"> <EquationSource Format="TEX">\(p\in (1,N)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>p</mi> <mo>∈</mo> <mo stretchy="false">(</mo> <mn>1</mn> <mo>,</mo> <mi>N</mi> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq11"> <EquationSource Format="TEX">\(q\in (p\frac{N+2}{N},\frac{Np}{N-p})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>q</mi> <mo>∈</mo> <mo stretchy="false">(</mo> <mi>p</mi> <mfrac> <mrow> <mi>N</mi> <mo>+</mo> <mn>2</mn> </mrow> <mi>N</mi> </mfrac> <mo>,</mo> <mfrac> <mrow> <mi mathvariant="italic">Np</mi> </mrow> <mrow> <mi>N</mi> <mo>-</mo> <mi>p</mi> </mrow> </mfrac> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation>.</p>

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Normalised solutions for p-Laplacian equations with \(L^p\)-supercritical growth

  • Raj Narayan Dhara,
  • Matteo Rizzi

摘要

For \(N\ge 3\) N 3 and \(2<p<N\) 2 < p < N , we find normalised solutions to the equation \(\begin{aligned} -\Delta _p u+(1+V(x))|u|^{p-2}u+\lambda u&=|u|^{q-2}u\qquad \text {in }\,\, {\mathbb {R}}^{N}\\ \Vert u\Vert _2&=\rho \end{aligned}\) - Δ p u + ( 1 + V ( x ) ) | u | p - 2 u + λ u = | u | q - 2 u in R N u 2 = ρ in the mass supercritical and Sobolev subcritical case, that is \(q\in \) q \((p\frac{N+2}{N},\frac{Np}{N-p})\) ( p N + 2 N , Np N - p ) , at least if \(\rho >0\) ρ > 0 is small enough. The function \(V\in L^{N/p}({\mathbb {R}}^{N})\) V L N / p ( R N ) , which plays the role of potential, is assumed to be non-positive and vanishing at infinity. Moreover, we will prove the compactness of the embedding of the space of radial functions \(W^{1,p}_{rad}({\mathbb {R}}^{N})\subset L^q({\mathbb {R}}^{N})\) W rad 1 , p ( R N ) L q ( R N ) for \(p\in (1,N)\) p ( 1 , N ) and \(q\in (p\frac{N+2}{N},\frac{Np}{N-p})\) q ( p N + 2 N , Np N - p ) .