The paper argues that quenched g_A ≈ 1 in nuclei and the pseudo-conformal sound speed v_s^2/c^2 ≈ 1/3 in compact stars are parallel signals of one emergent hidden scale symmetry.
"Pseudo-Conformal" Sound Speed in the Core of Compact Stars
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abstract
We present the argument that "pseudo-conformal" symmetry permeates from low density near nuclear matter to high density in the core of massive neutron stars. As a support of this argument, we describe how the quenched $g_A\approx 1$ in nuclei and the sound speed $v_s^2/c^2\approx 1/3$ in compact stars are controlled by emerging scale invariance in nuclear interactions. In our description, quasi-baryons could "masquerade" de-confined quarks in the interior of compact stars.
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From Nuclear Matter with Quenched $g_A$ to Compact-Star Matter with a Signal for Emergent Hidden Scale Symmetry
The paper argues that quenched g_A ≈ 1 in nuclei and the pseudo-conformal sound speed v_s^2/c^2 ≈ 1/3 in compact stars are parallel signals of one emergent hidden scale symmetry.