glasses present larger non-affine elastic components than the atomic (LJ) glasses [@Leonforte_2005; @Mizuno_2013]. Even under an isotropic bulk deformation, the non-affine $K_\mathrm{NA}$ ($\simeq 80$ for $L=50$ and $\simeq 50$ for $L=3$, at $\varepsilon_\mathrm{bend}\le 1$) is approximately half of the magnitude of the affine $K_\mathrm{A}$ ($\simeq 155$ for $L=50$ and $\simeq 120$ for $L=3$, at $\varepsilon_\mathrm{bend}\le 1$). This result is different from that of the LJ glasses, where a negligible value of $K_\mathrm{NA} \simeq 0.5$ (whereas $K_\mathrm{A} \simeq 60.2$) was obtained [@Mizuno_2013]. Larger non-affine moduli reflect various elastic responses due to the multiple degrees of conformations in polymeric chains. Therefore, the non-affine deformation process must be considered to characterize the elastic property of polymeric systems.

![\[fig4\] [Low-frequency vibrational spectra.]{} We plot the vDOS $g(\omega)$ divided by $\omega^2$, i.e., the reduced vDOS $g(\omega)/\omega^2$, with changing the strength of bending rigidity $\varepsilon_\mathrm{bend}$. The chain length is (a) $L=50$ and (b) $L=3$. The horizontal lines indicate the Debye level $A_\mathrm{D}$. The color of line indicates the value of bending rigidity $\varepsilon_\mathrm{bend}$ according to the color bar. Black lines present value of the LJ glass which is taken from Ref. [@Shimada:2018fp]. ](fig4.pdf){width="48.00000%"}

![\[fig5\] [Debye frequency and Debye level.]{} Plots of the Debye frequency $\omega_\mathrm{D}$ (circles) 