The class is *libLSS/physics/bias/double_power_law.hpp*, class is *LibLSS::bias::DoubleBrokenPowerLaw*.

This class implements the double power law bias model. Its corresponding mathematical model is {$$ N_g = \bar{n} \frac{\rho_m^\alpha}{1 + (\rho_m/\rho_0)^{\alpha-\beta}}, $$} with {$\rho_m = 1+\delta_m$}, {$\bar{n}$} a normalization constant, {$\alpha$} the power law scaling, {$\beta$} the second power law scaling, {$\rho_0$} the threshold between the two power law.