Neutron stars not sustained by degeneracy force?

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SUMMARY

Neutron stars are not solely sustained by neutron degeneracy forces, as claimed by a professor from Hong Kong University. Instead, they are also influenced by residual strong nuclear forces, specifically the exchange of pions. While mainstream understanding suggests that neutron degeneracy pressure is the primary stabilizing factor, the discussion reveals that both nuclear forces and degeneracy pressure play critical roles in maintaining the structure of neutron stars. The immense pressure within neutron stars disassembles atomic nuclei but does not dismantle neutrons, allowing them to remain stable.

PREREQUISITES
  • Understanding of neutron degeneracy pressure
  • Familiarity with strong nuclear forces and their mechanisms
  • Knowledge of particle physics, specifically quarks and pions
  • Basic concepts of stellar evolution and neutron star formation
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  • Research the role of neutron degeneracy pressure in stellar stability
  • Explore the mechanics of strong nuclear forces and their implications in astrophysics
  • Study the process of neutron star formation and the conditions leading to their creation
  • Investigate the interactions between quarks and pions in particle physics
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Astronomers, astrophysicists, and students of particle physics who are interested in the stability and formation of neutron stars.

dalcde
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I have just attended a talk, where the speaker (a professor in Hong Kong University) claims that neutron stars don't collapse due to "nuclear forces". He further explains that those nuclear forces are residual strong forces (i.e. exchange of pions). However, the mainstream saying (according to Wikipedia) I've heard is that they are sustained by neutron degeneracy forces. Which is correct? And if it is indeed sustained by nuclear force, how does it work since as far as I know, nuclear forces are attractive.
 
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Both are correct. The nuclear strong force only applies to atomic nuclei. It is what binds protons to neutrons and quarks to quarks. The pressure in a neutron star is great enough to disassemble atomic nuclei, and protons but, not enough to dismantle neutrons.
 

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