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Remarks on nuclear matter: How an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>ω</mml:mi><mml:mn>0</mml:mn></mml:msub></mml:math> condensate can spike the speed of sound, and a model of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>3</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> baryons
I make two comments about nuclear matter. First, I consider the effects of a coupling between the $O(4)$ chiral field, $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\phi}}$, and the ${\ensuremath{\omega}}_{\ensuremath{\mu}}$ meson, $\ensuremath{\sim}+{\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\phi}}}^{2}{\ensuremath{\omega}}_{\ensuremath{\mu}}^{2}$; for any net baryon density, a condensate for ${\ensuremath{\omega}}_{0}$ is unavoidably generated. I assume that with increasing density, a decrease of the chiral condensate …