What if atoms obeyed an inverse-cubed law

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Discussion Overview

The discussion explores the implications of a hypothetical universe governed by an inverse-cubed law, particularly focusing on the stability of electron orbits and the existence of ground states in atomic structures. The conversation touches on theoretical concepts related to physics and dimensionality.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant asserts that atoms would be impossible under an inverse-cube law due to the lack of stable orbits for electrons.
  • Another participant claims that an inverse-cube potential would not allow for a ground state.
  • A different viewpoint suggests that if the universe had four spatial dimensions, atoms could potentially obey an inverse-cube law.
  • One participant reiterates the absence of a ground state in an inverse-cube potential and adds that flux conservation, a property of 1/r² laws, would no longer hold.

Areas of Agreement / Disagreement

Participants express differing views on the implications of an inverse-cube law, particularly regarding the existence of ground states and the stability of atomic structures. There is no consensus on the overall feasibility of atoms in such a universe.

Contextual Notes

The discussion highlights limitations related to the assumptions about dimensionality and the specific properties of inverse-cube laws versus inverse-square laws, which remain unresolved.

bobsmith76
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atoms would be impossible in a universe ruled by an inverse-cube law because there would be no stable orbits for electrons.

The above sentence comes from Rees' book Just Six Numbers. I don't get it. Why would an inverse-cube law affect the stability of electron orbits?
 
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Because for an inverse-cube potential, there is no ground state!
 
they will obey inverse cube law if universe had 4 space dimensions
 
Bill_K said:
Because for an inverse-cube potential, there is no ground state!

Not to mention flux is no longer conserved. That's a special property of 1/r^2 laws that we often take for granted.
 

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