<p>Point canonical transformation has been used to find out new exactly solvable potentials in the position-dependent mass framework. We solve 1-D Schrödinger equation in this framework by considering two different fairly generic position-dependent masses <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2024_5854_Article_IEq1.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="126" /> </InlineMediaObject> <EquationSource Format="TEX">\((i) M(x)=\lambda g'(x)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mrow> <mo stretchy="false">(</mo> <mi>i</mi> <mo stretchy="false">)</mo> </mrow> <mi>M</mi> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> <mo>=</mo> <mi>λ</mi> <msup> <mi>g</mi> <mo>′</mo> </msup> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2024_5854_Article_IEq2.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="151" /> </InlineMediaObject> <EquationSource Format="TEX">\((ii) M(x) = c \left( {g'(x)} \right) ^\nu \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mrow> <mo stretchy="false">(</mo> <mi>i</mi> <mi>i</mi> <mo stretchy="false">)</mo> </mrow> <mi>M</mi> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> <mo>=</mo> <mi>c</mi> <msup> <mfenced close=")" open="("> <mrow> <msup> <mi>g</mi> <mo>′</mo> </msup> <mrow> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </mfenced> <mi>ν</mi> </msup> </mrow> </math></EquationSource> </InlineEquation>, <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2024_5854_Article_IEq3.gif" Format="GIF" Height="26" Rendition="HTML" Resolution="72" Type="Linedraw" Width="68" /> </InlineMediaObject> <EquationSource Format="TEX">\(\nu =\frac{2\eta }{2\eta +1},\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>ν</mi> <mo>=</mo> <mfrac> <mrow> <mn>2</mn> <mi>η</mi> </mrow> <mrow> <mn>2</mn> <mi>η</mi> <mo>+</mo> <mn>1</mn> </mrow> </mfrac> <mo>,</mo> </mrow> </math></EquationSource> </InlineEquation> with <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2024_5854_Article_IEq4.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="97" /> </InlineMediaObject> <EquationSource Format="TEX">\(\eta = 0,1,2\cdots \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>η</mi> <mo>=</mo> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo>,</mo> <mn>2</mn> <mo>⋯</mo> </mrow> </math></EquationSource> </InlineEquation>. In the first case, we find new exactly solvable potentials that depend on an integer parameter <i>m</i>, and the corresponding solutions are written in terms of <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2024_5854_Article_IEq5.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="27" /> </InlineMediaObject> <EquationSource Format="TEX">\(X_m\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>X</mi> <mi>m</mi> </msub> </math></EquationSource> </InlineEquation>-Laguerre polynomials. In the latter case, we obtain a new one parameter <InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2024_5854_Article_IEq6.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="23" /> </InlineMediaObject> <EquationSource Format="TEX">\((\nu )\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo stretchy="false">(</mo> <mi>ν</mi> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> family of isochronous solvable potentials whose bound states are written in terms of <InlineEquation ID="IEq7"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10773_2024_5854_Article_IEq7.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="27" /> </InlineMediaObject> <EquationSource Format="TEX">\(X_m\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>X</mi> <mi>m</mi> </msub> </math></EquationSource> </InlineEquation>-Laguerre polynomials. Further, we show that the new potentials are shape invariant by using the supersymmetric approach in the framework of position-dependent mass.</p>

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Solving New Potentials in Terms of Exceptional Orthogonal Polynomials and Their Supersymmetric Partners

  • Satish Yadav,
  • Rahul Ghosh,
  • Bhabani Prasad Mandal

摘要

Point canonical transformation has been used to find out new exactly solvable potentials in the position-dependent mass framework. We solve 1-D Schrödinger equation in this framework by considering two different fairly generic position-dependent masses \((i) M(x)=\lambda g'(x)\) ( i ) M ( x ) = λ g ( x ) and \((ii) M(x) = c \left( {g'(x)} \right) ^\nu \) ( i i ) M ( x ) = c g ( x ) ν , \(\nu =\frac{2\eta }{2\eta +1},\) ν = 2 η 2 η + 1 , with \(\eta = 0,1,2\cdots \) η = 0 , 1 , 2 . In the first case, we find new exactly solvable potentials that depend on an integer parameter m, and the corresponding solutions are written in terms of \(X_m\) X m -Laguerre polynomials. In the latter case, we obtain a new one parameter \((\nu )\) ( ν ) family of isochronous solvable potentials whose bound states are written in terms of \(X_m\) X m -Laguerre polynomials. Further, we show that the new potentials are shape invariant by using the supersymmetric approach in the framework of position-dependent mass.