Matter induced charge symmetry violating NN potential
  We construct density dependent Class $III$ charge symmetry violating (CSV) potential due to mixing of $\rho$-$\omega$ meson with off-shell corrections. Here in addition to the usual vacuum contribution, the matter induced mixing of $\rho$-$\omega$ is also included. It is observed that the contribution of density dependent CSV potential is comparable to that of the vacuum contribution. 
Subhrajyoti Biswas, Pradip Roy, Abhee K. Dutt-Mazumder