Probing the Universe's Topology through a Quantum System?

Fuente: arXiv
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Main Authors: Paraskevas, Evangelos Achilleas, Perivolaropoulos, Leandros
Format: Preprint
Published: 2025
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author Paraskevas, Evangelos Achilleas
Perivolaropoulos, Leandros
author_facet Paraskevas, Evangelos Achilleas
Perivolaropoulos, Leandros
contents The global topology of the Universe could, in principle, affect quantum systems through boundary condition constraints. We investigate this connection by analyzing how compact, flat, cosmologically inspired topologies, specifically the $3-$Torus ($E_1$) and half turn space ($E_2$), influence the energy eigenvalues of a quantum particle in the bound state of a 3D Dirac delta potential. Using rigorous renormalization techniques, we derive the equations satisfied by the energy eigenvalues in each topology and develop a systematic method to compute spectral shifts. Our results reveal that each topology induces characteristic deviations in the energy spectrum. In the large$-L$ limit ($L >> g_R$), to leading order, the energy eigenvalues for both the $E_1$ and $E_2$ spaces can be written in the unified form $E\simeq -\frac{\hbar^2}{2mg_R^2}(1 + C_Γ\,\frac{2g_R}{L}\,e^{-L/g_R})$, where the topology dependent coefficient is $C_Γ= 6$ for the $E_1$ space and $C_Γ= 4$ for the $E_2$ space, $g_R$ is the characteristic length scale of the quantum system, and $L$ is the side physical length of the fundamental cubic region. Using the three dimensional Dirac potential as a toy model, we show that at the current cosmic epoch ($a=1$), these topological effects are exponentially suppressed, rendering direct observation infeasible. However, such effects may become measurable in the early Universe, when the physical size of the particle horizon is comparable to the characteristic scale of the quantum system. While immediate experimental verification remains impractical, our work offers theoretical insight into how global cosmic topology might manifest in quantum bound states and may inform future studies of early Universe quantum phenomena.
format Preprint
id arxiv_https___arxiv_org_abs_2505_08603
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Probing the Universe's Topology through a Quantum System?
Paraskevas, Evangelos Achilleas
Perivolaropoulos, Leandros
Quantum Physics
General Relativity and Quantum Cosmology
Mathematical Physics
The global topology of the Universe could, in principle, affect quantum systems through boundary condition constraints. We investigate this connection by analyzing how compact, flat, cosmologically inspired topologies, specifically the $3-$Torus ($E_1$) and half turn space ($E_2$), influence the energy eigenvalues of a quantum particle in the bound state of a 3D Dirac delta potential. Using rigorous renormalization techniques, we derive the equations satisfied by the energy eigenvalues in each topology and develop a systematic method to compute spectral shifts. Our results reveal that each topology induces characteristic deviations in the energy spectrum. In the large$-L$ limit ($L >> g_R$), to leading order, the energy eigenvalues for both the $E_1$ and $E_2$ spaces can be written in the unified form $E\simeq -\frac{\hbar^2}{2mg_R^2}(1 + C_Γ\,\frac{2g_R}{L}\,e^{-L/g_R})$, where the topology dependent coefficient is $C_Γ= 6$ for the $E_1$ space and $C_Γ= 4$ for the $E_2$ space, $g_R$ is the characteristic length scale of the quantum system, and $L$ is the side physical length of the fundamental cubic region. Using the three dimensional Dirac potential as a toy model, we show that at the current cosmic epoch ($a=1$), these topological effects are exponentially suppressed, rendering direct observation infeasible. However, such effects may become measurable in the early Universe, when the physical size of the particle horizon is comparable to the characteristic scale of the quantum system. While immediate experimental verification remains impractical, our work offers theoretical insight into how global cosmic topology might manifest in quantum bound states and may inform future studies of early Universe quantum phenomena.
title Probing the Universe's Topology through a Quantum System?
topic Quantum Physics
General Relativity and Quantum Cosmology
Mathematical Physics
url https://arxiv.org/abs/2505.08603