<p>We present a comprehensive numerical and analytical study of information-theoretic measures–specifically, the Shannon entropy in position (<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10825_2025_2422_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="20" /> </InlineMediaObject> <EquationSource Format="TEX">\(S_x\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>S</mi> <mi>x</mi> </msub> </math></EquationSource> </InlineEquation>) and momentum (<InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10825_2025_2422_Article_IEq2.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="25" /> </InlineMediaObject> <EquationSource Format="TEX">\(S_{p_x}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>S</mi> <msub> <mi>p</mi> <mi>x</mi> </msub> </msub> </math></EquationSource> </InlineEquation>) spaces, for a non-relativistic fermion subject to a <i>q</i>-deformed Pöschl–Teller-like hyperbolic potential, including comparisons with the <i>q</i>-deformed Morse potential. By systematically varying the deformation parameter <i>q</i>, the inverse length scale <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10825_2025_2422_Article_IEq3.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="14" /> </InlineMediaObject> <EquationSource Format="TEX">\(\alpha\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>α</mi> </math></EquationSource> </InlineEquation>, and the potential depth <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10825_2025_2422_Article_IEq4.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="17" /> </InlineMediaObject> <EquationSource Format="TEX">\(V_0\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>V</mi> <mn>0</mn> </msub> </math></EquationSource> </InlineEquation>, we investigate their combined influence on spatial localization, uncertainty, and the global and local information content of the quantum states. Our results show that <i>q</i> induces a controllable trade-off between <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10825_2025_2422_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="20" /> </InlineMediaObject> <EquationSource Format="TEX">\(S_x\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>S</mi> <mi>x</mi> </msub> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10825_2025_2422_Article_IEq2.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="25" /> </InlineMediaObject> <EquationSource Format="TEX">\(S_{p_x}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>S</mi> <msub> <mi>p</mi> <mi>x</mi> </msub> </msub> </math></EquationSource> </InlineEquation>, while preserving their sum; <InlineEquation ID="IEq7"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10825_2025_2422_Article_IEq3.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="14" /> </InlineMediaObject> <EquationSource Format="TEX">\(\alpha\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>α</mi> </math></EquationSource> </InlineEquation> predominantly enhances total uncertainty, signaling increased delocalization; and <InlineEquation ID="IEq8"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10825_2025_2422_Article_IEq4.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="17" /> </InlineMediaObject> <EquationSource Format="TEX">\(V_0\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>V</mi> <mn>0</mn> </msub> </math></EquationSource> </InlineEquation> favors spatial localization at the cost of momentum spread. All configurations obey the Bialynicki-Birula–Mycielski (BBM) inequality, confirming the robustness of the approach. These findings underscore the deep connection between potential geometry and quantum information measures, with prospective implications for deformed quantum systems, relativistic extensions, and Lorentz symmetry-violating frameworks.</p>

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Quantum information measurements of the exact solution of the Schrödinger equation for a q-deformed Morse potential

  • Allan R. P. Moreira,
  • Abdelmalek Bouzenada,
  • Faizuddin Ahmed

摘要

We present a comprehensive numerical and analytical study of information-theoretic measures–specifically, the Shannon entropy in position ( \(S_x\) S x ) and momentum ( \(S_{p_x}\) S p x ) spaces, for a non-relativistic fermion subject to a q-deformed Pöschl–Teller-like hyperbolic potential, including comparisons with the q-deformed Morse potential. By systematically varying the deformation parameter q, the inverse length scale \(\alpha\) α , and the potential depth \(V_0\) V 0 , we investigate their combined influence on spatial localization, uncertainty, and the global and local information content of the quantum states. Our results show that q induces a controllable trade-off between \(S_x\) S x and \(S_{p_x}\) S p x , while preserving their sum; \(\alpha\) α predominantly enhances total uncertainty, signaling increased delocalization; and \(V_0\) V 0 favors spatial localization at the cost of momentum spread. All configurations obey the Bialynicki-Birula–Mycielski (BBM) inequality, confirming the robustness of the approach. These findings underscore the deep connection between potential geometry and quantum information measures, with prospective implications for deformed quantum systems, relativistic extensions, and Lorentz symmetry-violating frameworks.