Planck scale
Noun
Meaning
English Wikipedia has an article on:Planck scaleWikipedia
Planck scale (uncountable)
(physics) The scale at which quantum-mechanical effects become significant to depicting spacetime & other gravitational phenomena, typically defined as being on the order of one Planck length (~10 m).
Examples
If physical reality is totally finite, then the Copenhagen interpretation might be an approximation to an information processing system below the Planck scale.
The novel particles predicted by GUT models are expected to have masses around the GUT scale —just a few orders of magnitude below the Planck scale —and so will be well beyond the reach of any foreseen particle collider experiments.
Loop quantum gravity makes precise predictions about the geometry of spacetime at the Planck scale.
However, Van den Broeck concludes that the energy densities required are still unachievable, as are the small size (a few orders of magnitude above the Planck scale ) of the spacetime structures needed.
If Lorentz symmetry can cease to be a fundamental symmetry at Planck scale or at some other fundamental scale, it is conceivable that particles with a critical speed different from the speed of light be the ultimate constituents of matter.
It follows, then, that spacetime has an elementary quantum granular structure at the Planck scale, which cuts off the ultraviolet infinities of quantum field theory.