Template:Math/EQ ZTFG01

	$P_{\mathrm{d}\mathrm{e}\mathrm{g}}=A_{\mathrm{F}}F(\chi )$
where:  $F(\chi )\equiv \chi (2{\chi }^2-3)({\chi }^2+1{)}^{1/2}+3{\sinh }^{-1}\chi$
and:	$\chi \equiv (\rho /B_{\mathrm{F}}{)}^{1/3}$