<p>We consider a quasilinear Choquard problem <Equation ID="Equ58"> <EquationSource Format="TEX">\(\begin{aligned} \left\{ \begin{aligned}&amp;-\text {div}(\beta (|\nabla u|^2)\nabla u)+(\lambda +V(x))u=(I_\theta *|u|^p)|u|^{p-2}u\ &amp;\text {in}\ \mathbb {R}^{N\ge 3},\\&amp;u(x)\rightarrow 0,\ &amp;|x|\rightarrow +\infty \end{aligned} \right. \end{aligned}\)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <mrow> <mtable> <mtr> <mtd columnalign="right"> <mfenced open="{"> <mrow> <mtable> <mtr> <mtd /> <mtd columnalign="left"> <mrow> <mo>-</mo> <msup> <mrow> <mtext>div</mtext> <mo stretchy="false">(</mo> <mi>β</mi> <mo stretchy="false">(</mo> <mo stretchy="false">|</mo> <mi mathvariant="normal">∇</mi> <mi>u</mi> <mo stretchy="false">|</mo> </mrow> <mn>2</mn> </msup> <mrow> <mo stretchy="false">)</mo> <mi mathvariant="normal">∇</mi> <mi>u</mi> <mo stretchy="false">)</mo> <mo>+</mo> <mrow> <mo stretchy="false">(</mo> <mi>λ</mi> <mo>+</mo> <mi>V</mi> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> <mo stretchy="false">)</mo> </mrow> <mi>u</mi> <mo>=</mo> <mo stretchy="false">(</mo> </mrow> <msub> <mi>I</mi> <mi>θ</mi> </msub> <msup> <mrow> <mrow /> <mo>∗</mo> <mo stretchy="false">|</mo> <mi>u</mi> <mo stretchy="false">|</mo> </mrow> <mi>p</mi> </msup> <msup> <mrow> <mo stretchy="false">)</mo> <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> <mspace width="4pt" /> </mrow> </mtd> <mtd columnalign="right"> <mrow> <mtext>in</mtext> <mspace width="4pt" /> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mrow> <mi>N</mi> <mo>≥</mo> <mn>3</mn> </mrow> </msup> <mo>,</mo> </mrow> </mtd> </mtr> <mtr> <mtd columnalign="right"> <mrow /> </mtd> <mtd columnalign="left"> <mrow> <mi>u</mi> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> <mo stretchy="false">→</mo> <mn>0</mn> <mo>,</mo> <mspace width="4pt" /> </mrow> </mtd> <mtd columnalign="right"> <mrow> <mo stretchy="false">|</mo> <mi>x</mi> <mo stretchy="false">|</mo> <mo stretchy="false">→</mo> <mo>+</mo> <mi>∞</mi> </mrow> </mtd> </mtr> </mtable> </mrow> </mfenced> </mtd> </mtr> </mtable> </mrow> </math></EquationSource> </Equation>with the prescribed mass <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\int _{\mathbb {R}^N}|u|^2\text {d}x=a^2\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mo>∫</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>N</mi> </msup> </msub> <msup> <mrow> <mo stretchy="false">|</mo> <mi>u</mi> <mo stretchy="false">|</mo> </mrow> <mn>2</mn> </msup> <mtext>d</mtext> <mi>x</mi> <mo>=</mo> <msup> <mi>a</mi> <mn>2</mn> </msup> </mrow> </math></EquationSource> </InlineEquation> for a fixed <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(a&gt;0\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>a</mi> <mo>&gt;</mo> <mn>0</mn> </mrow> </math></EquationSource> </InlineEquation>, where <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\lambda \in \mathbb {R}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>λ</mi> <mo>∈</mo> <mi mathvariant="double-struck">R</mi> </mrow> </math></EquationSource> </InlineEquation> is a Lagrange multiplier and <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(I_\theta \)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>I</mi> <mi>θ</mi> </msub> </math></EquationSource> </InlineEquation> is the Riesz potential of <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\theta \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>θ</mi> </math></EquationSource> </InlineEquation>-th order with <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(\theta \in (0,N)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>θ</mi> <mo>∈</mo> <mo stretchy="false">(</mo> <mn>0</mn> <mo>,</mo> <mi>N</mi> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation>. We first prove the existence of normalized ground state solutions to this problem with the mass subcritical case and <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(V(x)\equiv 0\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>V</mi> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> <mo>≡</mo> <mn>0</mn> </mrow> </math></EquationSource> </InlineEquation> by imposing some suitable conditions on <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(\beta (\cdot )\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>β</mi> <mo stretchy="false">(</mo> <mo>·</mo> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation>. We next attain the existence of radially normalized ground state solutions to this problem with the mass supercritical case and <InlineEquation ID="IEq9"> <EquationSource Format="TEX">\(V(x)\le 0\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>V</mi> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> <mo>≤</mo> <mn>0</mn> </mrow> </math></EquationSource> </InlineEquation> by means of mountain pass theorem. Finally, we show the nonexistence of its normalized solutions with the mass critical case.</p>

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Existence and nonexistence of normalized solutions to a class of quasilinear Choquard problems

  • Rui Sun,
  • Shenzhou Zheng

摘要

We consider a quasilinear Choquard problem \(\begin{aligned} \left\{ \begin{aligned}&-\text {div}(\beta (|\nabla u|^2)\nabla u)+(\lambda +V(x))u=(I_\theta *|u|^p)|u|^{p-2}u\ &\text {in}\ \mathbb {R}^{N\ge 3},\\&u(x)\rightarrow 0,\ &|x|\rightarrow +\infty \end{aligned} \right. \end{aligned}\) - div ( β ( | u | 2 ) u ) + ( λ + V ( x ) ) u = ( I θ | u | p ) | u | p - 2 u in R N 3 , u ( x ) 0 , | x | + with the prescribed mass \(\int _{\mathbb {R}^N}|u|^2\text {d}x=a^2\) R N | u | 2 d x = a 2 for a fixed \(a>0\) a > 0 , where \(\lambda \in \mathbb {R}\) λ R is a Lagrange multiplier and \(I_\theta \) I θ is the Riesz potential of \(\theta \) θ -th order with \(\theta \in (0,N)\) θ ( 0 , N ) . We first prove the existence of normalized ground state solutions to this problem with the mass subcritical case and \(V(x)\equiv 0\) V ( x ) 0 by imposing some suitable conditions on \(\beta (\cdot )\) β ( · ) . We next attain the existence of radially normalized ground state solutions to this problem with the mass supercritical case and \(V(x)\le 0\) V ( x ) 0 by means of mountain pass theorem. Finally, we show the nonexistence of its normalized solutions with the mass critical case.