Vainshtein radius

Inside the Vainshtein radius^[1]

${\displaystyle r_{V}=l_{\text{P}}\left({\frac {m_{\text{P}}^{3}M}{m_{G}^{4}}}\right)^{\frac {1}{5}}}$

with Planck length ${\displaystyle l_{\text{P}}}$ and Planck mass ${\displaystyle m_{\text{P}}}$

the gravitational field around a body of mass ${\displaystyle M}$ is the same in a theory where the graviton mass ${\displaystyle m_{G}}$ is zero and where it's very small because the helicity 0 degree of freedom becomes effective on distance scales ${\displaystyle r\gg r_{V}}$.^[2]

See also

• Massive gravity – Theory of gravity in which the graviton has nonzero mass