# How to explain imaginary kinematic viscosity of a vacuum?

According to the connection between the Schrödinger equation and the Navier-Stokes vacuum has the imaginary kinematic viscosity $$\frac{ih}{2m}$$. How to explain it? For the formation of the viscosity of the vacuum environment is needed, how to describe its properties?

• Evgeniy, why are you posting short questions on this site then immediately answering them yourself? – Chappo Jan 7 at 7:26
• This is a very important question about the properties of a vacuum and everything bypasses it. – Evgeniy Yakubovskiy Jan 7 at 7:33
• This has been considered many times before, eg. physics.stackexchange.com/q/281145 – Ryan Thorngren Jan 7 at 9:19