Is nuclear matter a solid or liquid?

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Discussion Overview

The discussion centers on the nature of nuclear matter, specifically whether it behaves more like a solid or a liquid. Participants explore concepts related to shear strength, the characteristics of nuclear matter in contexts such as neutron stars, and the theoretical frameworks that describe these states of matter.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether nuclear matter possesses shear strength or behaves like an ideal gas, suggesting it may resemble a fermi gas based on elementary calculations.
  • Another participant seeks clarification on the definition of nuclear matter, noting that ordinary matter consists of atoms with nuclei and electrons.
  • A third participant defines nuclear matter in the context of neutron stars, indicating it is a state where free electrons are absent and raises the question of whether current theories predict shear strength or liken it to a fermi gas.
  • One participant asserts that neutron stars are extremely solid and implies that they would exhibit a significant shear strength, referencing an external source for further discussion.

Areas of Agreement / Disagreement

Participants express differing views on the properties of nuclear matter, particularly regarding its shear strength and whether it behaves more like a solid or a fermi gas. The discussion remains unresolved with multiple competing perspectives presented.

Contextual Notes

There are limitations in the discussion regarding the definitions of nuclear matter and the assumptions underlying the theoretical frameworks being referenced. The relationship between nuclear matter and its shear strength is not fully established, and the implications of neutron star characteristics are not universally agreed upon.

Paul Colby
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Managed to get through a Ph.D. in nuclear physics without covering nuclear matter calculations (or I just don't recall it). My question is does nuclear matter have any shear strength, or is it like an ideal gas? What little I see of elementary calculations it's like a fermi gas so one would expect no shear stresses to speak of.
 
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What are you calling nuclear matter? All ordinary matter consists of atoms with nuclei and electrons.
 
Okay, nuclear matter is a thing people study like for neutron stars and such where there are no free electrons. In ancient time (before quarks were more of a certainty) it's an ##A = \infty## where, ##A## is the atomic number nucleus, held together by a repulsive nuclear force and gravity. My question is does the current nuclear matter theory predict such stuff have a shear strength or is it more like a fermi gas?
 

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