Are Space and Time Quantized?

The construction of accelerated fields differs from ordinary quantum field theory and provides a mathematically consistent way to quantize spacetime. In this approach, space and time are quantized in the way quantities like energy and momentum are quantized in ordinary quantum field theories.

Are space and time bound together?

Spacetime: ... Although time remains physically distinct from space, time and the three dimensional space coordinates are so intimately bound together in their properties that it only makes sense to describe them jointly as a four dimensional continuum.

Is Universe quantized?

But even though there's very good evidence that all of the fundamental entities in the Universe are quantum at some level, that doesn't mean that everything is both discrete and quantized. ... We can treat every quantum of energy as discrete, but whether we can do the same for space and/or time itself is unknown.