  We consider the impact of Generalized Uncertainty Principle (GUP) effects on
the Dymnikova regular black hole. The minimum length scale introduced by the
GUP modifies the energy density associated with the gravitational source,
referred to as the Dymnikova vacuum, based on its analogy with the
gravitational counterpart of the Schwinger effect. We present an approximated
analytical solution (together with exact numerical results for comparison) that
encompasses a wide range of black hole sizes, spanning from microscopic
(Planckian and sub-Planckian) to macroscopic scales, whose properties crucially
depend on the ratio between the de Sitter core radius and the GUP scale. The
emergence of a wormhole inside de Sitter core in the innermost region of the
object is one of the most relevant features of this family of solutions. Our
findings demonstrate that these solutions remain singularity free, confirming
the robustness of the Dymnikova regular black hole under GUP corrections.
Regarding energy conditions, we find that the violation of the strong, weak,
and null energy conditions which is characteristic of the pure Dymnikova case
does not occur at Planckian scales in the GUP corrected solution. This contrast
suggests a departure from conventional expectations and highlights the
influence of quantum corrections and the GUP in modifying the energy conditions
near the Planck scale.
