# repulsive classical gravity

17 Jan 2024Could one make classical gravity repulsive on large scales by this particular change \(\mathcal{L} = (\nabla\Phi)^2/2+4\pi G\rho\Phi - m^2\Phi^2/2\), giving rise to the modified Poisson equation, \((\Delta+m^2)\Phi = 4\pi G\rho,\) and how would that modification differ from introducing a cosmological constant? What would be the interpretation of \(m\) in the Lagrange-density?