In short, no. There's no science to support the idea of the "zero tau" pods described in these novels. They're described as a device that stops the flow of time for objects (including humans) placed inside them and that's not possible according to our current understanding of the universe.
Out-of-universe, the name "zero-tau" is probably a nod to the 1970 sci fi novel by Poul Anderson "Tau Zero". The name of that novel is itself derived from a fictional variation of the mathematical concept of tau. In the novel tau is described as the "time contraction factor" which is related to the speed of light and the relative velocity of an object. The story in the novel revolves around a spaceship that travels ever closer to the speed of light, and hence closer to "tau zero" - time passes normally for the crew on board but the relative passage of time externally keeps increasing.
In Hamilton's universe "zero-tau" is used as an expression of "zero time", i.e. zero time passes for a person placed inside a "zero tau" unit, relative to an observer outside the unit. For this to be true in our known universe the person inside the unit would have to travelling at the speed of light relative to a person outside the unit.