In addition to reducing to the Maxwell–Boltzmann distribution in the limit of high T and low density, Bose–Einstein statistics also reduces to Rayleigh–Jeans law distribution for low energy states with ε ε i − − μ μ ≪ ≪ k B T , namely n ¯ ¯ i = g i e ( ε ε i − − μ μ ) / k B T − − 1 ≈ ≈ g i ( ε ε i − − μ μ ) / k B T = g i k B T ε ε i − − μ μ .