30 years in: Quo vadis generalized uncertainty principle?

Understand

According to a number of arguments in quantum gravity, both model-dependent and model-independent, Heisenberg's uncertainty principle is modified when approaching the Planck scale.

• This deformation is attributed to the existence of a minimal length.
• The ensuing models have found entry into the literature under the term Generalized Uncertainty Principle (GUP).
• In this work, we discuss several conceptual shortcomings of the underlying framework and critically review recent developments in the field.