Quantization of Black Holes
  We show that black holes can be quantized in an intuitive and elegant way
with results in agreement with conventional knowledge of black holes by using
Bohr's idea of quantizing the motion of an electron inside the atom in quantum
mechanics. We find that properties of black holes can be also derived from an
Ansatz of quantized entropy $\Delta S=4\pi k {\Delta R / \lambdabar}$, which
was suggested in a previous work to unify the black hole entropy formula and
Verlinde's conjecture to explain gravity as an entropic force. Such an Ansatz
also explains gravity as an entropic force from quantum effect. This suggests a
way to unify gravity with quantum theory. Several interesting and surprising
results of black holes are given from which we predict the existence of
primordial black holes ranging from Planck scale both in size and energy to big
ones in size but with low energy behaviors.
