<p>According to Verlinde’s conjecture(s), the gravitational interaction is just an emergent phenomenon of spatial variation of the entropy, generating the <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(r^{-2}\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mi>r</mi> <mrow> <mo>-</mo> <mn>2</mn> </mrow> </msup> </math></EquationSource> </InlineEquation> Newtonian force regardless of the distance scales. In this paper, the underlying arguments of such radial departure from distance scale are discussed in the framework of Boltzmann-Gibbs statistics for a gas composed of <i>N</i> quartic quantum anharmonic oscillators and exploiting an optimization procedure proposed by Burrows, Cohen, and Feldmann (BCF). The study in the framework of Boltzmann-Gibbs statistics is essential because it gives us a result that remains valid even at long-range interaction distances, contrary to what is said in the literature. We use the BCF optimization procedure to find low <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\((\alpha ^*_\textrm{low})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo stretchy="false">(</mo> <msubsup> <mi>α</mi> <mtext>low</mtext> <mo>∗</mo> </msubsup> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> and high <InlineEquation ID="IEq9"> <EquationSource Format="TEX">\((\alpha ^*_\textrm{high})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo stretchy="false">(</mo> <msubsup> <mi>α</mi> <mtext>high</mtext> <mo>∗</mo> </msubsup> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> frequencies, the extremized partition function <InlineEquation ID="IEq10"> <EquationSource Format="TEX">\(Z_{\alpha ^{*}}(\beta )\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi>Z</mi> <msup> <mi>α</mi> <mrow> <mrow /> <mo>∗</mo> </mrow> </msup> </msub> <mrow> <mo stretchy="false">(</mo> <mi>β</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>, the time evolution operator <InlineEquation ID="IEq11"> <EquationSource Format="TEX">\(\mathcal {U}_{\alpha ^*}(t,0)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi mathvariant="script">U</mi> <msup> <mi>α</mi> <mo>∗</mo> </msup> </msub> <mrow> <mo stretchy="false">(</mo> <mi>t</mi> <mo>,</mo> <mn>0</mn> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation>, and the density matrix <InlineEquation ID="IEq12"> <EquationSource Format="TEX">\(\rho _{n,\alpha ^*}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>ρ</mi> <mrow> <mi>n</mi> <mo>,</mo> <msup> <mi>α</mi> <mo>∗</mo> </msup> </mrow> </msub> </math></EquationSource> </InlineEquation> of the gas in a region where perturbation theory breaks down and it is no longer valid. After that, the expression of the ”original” partition function <InlineEquation ID="IEq13"> <EquationSource Format="TEX">\(Z_\alpha (\beta )\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi>Z</mi> <mi>α</mi> </msub> <mrow> <mo stretchy="false">(</mo> <mi>β</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> for such gas is obtained for both low and high frequencies. We prove that in the classical limit, <InlineEquation ID="IEq14"> <EquationSource Format="TEX">\(T \rightarrow +\infty \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>T</mi> <mo stretchy="false">→</mo> <mo>+</mo> <mi>∞</mi> </mrow> </math></EquationSource> </InlineEquation>, the attempt fails, and one needs to modify the first conjecture to obtain the <InlineEquation ID="IEq15"> <EquationSource Format="TEX">\(r^{-2}\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mi>r</mi> <mrow> <mo>-</mo> <mn>2</mn> </mrow> </msup> </math></EquationSource> </InlineEquation> Newtonian force. In contrast, at the highest distances, <InlineEquation ID="IEq16"> <EquationSource Format="TEX">\(r\gg 1\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>r</mi> <mo>≫</mo> <mn>1</mn> </mrow> </math></EquationSource> </InlineEquation>, the second conjecture remains as it was postulated, but the gravity departs from its classical nature and exhibits <InlineEquation ID="IEq17"> <EquationSource Format="TEX">\(r^{-1}\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mi>r</mi> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </msup> </math></EquationSource> </InlineEquation> MONDian force.</p>

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Newtonian \(r^{-2}\) and MONDian \(r^{-1}\) Dependence of Verlinde’s Conjectures for Quartic Quantum Anharmonic Oscillators: Statistical Treatment

  • Sid-Ahmed Yahiaoui,
  • Othmane Cherroud

摘要

According to Verlinde’s conjecture(s), the gravitational interaction is just an emergent phenomenon of spatial variation of the entropy, generating the \(r^{-2}\) r - 2 Newtonian force regardless of the distance scales. In this paper, the underlying arguments of such radial departure from distance scale are discussed in the framework of Boltzmann-Gibbs statistics for a gas composed of N quartic quantum anharmonic oscillators and exploiting an optimization procedure proposed by Burrows, Cohen, and Feldmann (BCF). The study in the framework of Boltzmann-Gibbs statistics is essential because it gives us a result that remains valid even at long-range interaction distances, contrary to what is said in the literature. We use the BCF optimization procedure to find low \((\alpha ^*_\textrm{low})\) ( α low ) and high \((\alpha ^*_\textrm{high})\) ( α high ) frequencies, the extremized partition function \(Z_{\alpha ^{*}}(\beta )\) Z α ( β ) , the time evolution operator \(\mathcal {U}_{\alpha ^*}(t,0)\) U α ( t , 0 ) , and the density matrix \(\rho _{n,\alpha ^*}\) ρ n , α of the gas in a region where perturbation theory breaks down and it is no longer valid. After that, the expression of the ”original” partition function \(Z_\alpha (\beta )\) Z α ( β ) for such gas is obtained for both low and high frequencies. We prove that in the classical limit, \(T \rightarrow +\infty \) T + , the attempt fails, and one needs to modify the first conjecture to obtain the \(r^{-2}\) r - 2 Newtonian force. In contrast, at the highest distances, \(r\gg 1\) r 1 , the second conjecture remains as it was postulated, but the gravity departs from its classical nature and exhibits \(r^{-1}\) r - 1 MONDian force.