Dynamics of entanglement and Bell non-locality for two stochastic qubits with dipole-dipole interaction

We have studied the analytical dynamics of Bell non-locality as measured by the CHSH inequality and entanglement as measured by concurrence for two noisy qubits that have the dipole-dipole interaction. The non-local entanglement created by the dipole-dipole interaction is found to be protected from sudden death for certain initial states.