Quantum Gravity should be tested! | with Giovanni Amelino-Camelia

Why is there a so large gap, in terms of order of magnitudes, between what we know of the physical world and the realm of quantum gravity? In fact, such a gap is so wide to prevent any direct probe of phenomena related with the quantum nature of gravity. How can we learn more about possible new physics beyond our current knowledge? Is there anything between us and quantum gravity or we just need to jump over this desert? Giovanni Amelino-Camelia invites us to question our approach to physics, advocating for a phenomenological approach towards quantum gravity.

Giovanni Amelino-Camelia is an Italian theoretical physicist. He works in quantum gravity phenomenology and have given important contributions to the development and study of modified relativistic symmetries. He is a proposer of Doubly Special Relativity, a relativistic theory rendering the Planck length an observer-independent length. Presently, he is a Professor of physics at the University of Naples "Federico II", Italy.

[vanikaghajanyan]

28:28 To quantum expression for the gravitational potential: "Containing all information about the gravitational field." (Einstein), you can come according to the classics (G), SR ©, and De Broglie's hypothesis (h), - without GR and QM:
a. Kepler's third law: Gm=(r^3)w^2.
b. The researcher will notice that electrodynamics has achieved great success, compared with mechanics, thanks to the introduction of the concept of current, and will write down Kepler's law as follows: I(G)= mw=v^3/G, where I(G) is the gravitational current: I(G)=[g•sec^-1]. By the way, Maxwell's realization of the displacement current effect is the culmination of all (mechanics+electrodynamics) classical physics.
c. The researcher will get acquainted with the semi-classical Bohr theory, where the quantization rule of the angular momentum: the moment modulus in a stationary orbit is determined by the formula mvr=nħ (n=1, 2, 3, ..). As well as with the de Broglie hypothesis: a free particle should be compared with a plane monochromatic wave, and the wave parameters are frequency and length waves are associated with mechanical characteristics - momentum and energy: k=p/ħ=w/c. And, based on Kepler's law, will write down Newton's law as follows: F=mg=m|a|= v^4/G=(ħ/c)w^2.
d. The researcher will remember Einstein's time dilation and the equivalence principle [see Pauli, RT, "Simple consequences of the equivalence principle", where v^2=(rw)^2=-2Ф(centrifugal)~-2Ф(G)], and finally writes the quantum expression for the Newtonian gravitational potential as follows: Ф(G)=(-1/2)[Għ/c]^½(w) = (can be tested experimentally in the laboratory at the moment).
One of the important regularities that the formula reveals is the quantization of not only the orbit, but also the wave itself (obviously, the problem of particle/wave dualism disappears at the same time): πr=nλ=(n+n')2r(pl), that is, λ=(1+n'/n)λ(pl), where n' (=0, 1, 2, 3…) is the orbit number, n (=0, 1, 2, 3…) is the number of particles (quanta).
In other words, mc^2=ħw; where m (=M/n'=2∆m/n) is the quantum of the complete and mass defect of the system: moreover, the parameter mλ covers the entire spectrum of particles.
P.S. Details are here; "GR was QG":

[Curleyguitars]

I wonder what Giovanni thinks about the complexity work being promoted by Susskind?