Trying to understand how far I can go with my representation of the vacuum (spontaneous random polarization forces -see my webpage- (srpf) acting on the space time, alias geometric structure), I consider: 1°) each point immerged in it as if it was a system with two possible states: a stabile one (state 2) with energy 0 and a set of instable (state 1) one with energy 0 too (because we stay in vacuum); 2°) that a “couplage” exists between these two states because of the energetic perturbation due to the srpf i.e. W where Delta t = (1/T) is the duration of the perturbation, and try to apply a way of thinking made by Lamb and Retherford giving the probability to find this system (each point in vacuum) in a given state depending of the energy W21. Each instable state is associated to an energy given by a complex number: E’1 = - i. (h/4pi). T (i² + 1 = 0) And the « couplage » gives two new possible values. So that the answer depends of the sign of W - (h/8pi). T. But not only, it depends of the relation of uncertainty of Heisenberg: W. Delta t > (h/4pi) That is here: W > (h/4pi). T > (h/8pi). T Leading to the case: W - (h/8pi). T > 0 And we get two different values with the same imaginary part (= same duration) and the same real part but once with a positive and once with a negative energy. E’1 = ± [|W|² - (h/8pi)². (T)²] ^1/2 - i. (h/4pi). T Question 01: Is this way of thinking correctly describing the birth (creation) of a real particle with its associated real anti-particle in vacuum? Or of a virtual particle with its associated virtual anti-particle in vacuum? Question 02: If yes (it describes a creation) which kind of particles (photon, graviton,…) Question 03: What is the actual official opinion about this question? I mean can we really observe such spontaneous creation in vacuum during nuclear collisions and reactions? Thanks for illuminating my obscurity.