According to Harold White, a quantum vacuum plasma thruster-powered spacecraft weighing 90 (tonnes) would be able to reach Proxima Centauri in ~ 29.9 years at 4 newtons per quantum vacuum fluctuations of empty space as a "propellant".
According to Harold White, a quantum vacuum plasma thruster-powered spacecraft weighing 90 (tonnes) would be able to reach Proxima Centauri in ~ 29.9 years at 4 newtons per kilowatt. The research team claims the "Q-thruster" utilizes the quantum vacuum fluctuations of empty space as a "propellant".