Figure 6.

Density difference $\Delta \rho$ as a function of temperature asymmetry $\chi$ in log–log scale. Fits of $\Delta \rho =A{(\chi -{\chi }^{*})}^{{\beta }^{\prime }}$ are shown when (i) (orange) all three parameters A, ${\chi }^{*}$ and ${\beta }^{\prime }$ are fitted (values $0.143{\sigma }^{-3}$, $0.36$ and $0.47$, respectively), (ii) only A and ${\chi }^{*}$ are fitted ($0.140{\sigma }^{-3}$, $0.32$), while ${\beta }^{\prime }$ is set to $1/2$ (black) and (iii) only A and ${\beta }^{\prime }$ are fitted ($0.149{\sigma }^{-3}$, $0.43$) while ${\chi }^{*}$ is set to $0.43$ (red). Note that the x-axis $\chi -{\chi }^{*}$ includes ${\chi }^{*}$, which is different for the different fits, and, therefore, the data points look like three different sets. Inset: Difference in volume fraction of the hot particles $\Delta {\varphi }_h$ as a function of the temperature asymmetry $\chi$. Different curves correspond to different fitting procedures: (i) all three parameters are fitted $A=0.97{\sigma }^{-3}$, ${\chi }^{*}=0.69$, ${\beta }^{\prime }=0.07$ (orange), (ii) ${\chi }^{*}$ was set to $0.43$, but the curve does not exhibit a power law behavior (red). Similarly, the $\Delta {\varphi }_h$ data are not consistent with a power law with exponent $0.5$ (not shown).