The phrase "new equilibrium" means a new state of balance or stability. It suggests that a change has occurred to bring things back into balance after being disrupted. Full definition
Third, whatever new equilibrium might develop five generations from now, in the meantime there would be blood. (firstthings.com)
We simply keep them constant to see how each model adjusts to its own new equilibrium. (climateprediction.net)
Clay content and initial organic matter content are the main factors in the determination of new equilibrium levels of carbon and nitrogen in the soil. (usask.ca)