IMHO, you don't need that. If you will accept that our Universe is «digital» in nature (i.e. you cannot have 1/2 of black hole or 1/2 of star, of 1/2 atom, etc.

IMHO, you don't need that. If you will accept that our Universe is «digital» in nature (i.e. you cannot have 1/2 of black hole or 1/2 of star, of 1/2 atom, etc.), then you will see that each photon can be represented by large _integer_ number. This means that photon will lose 2*1/2 of it smallest digit at each revolution at average. Exceeding energy will make vacuum «hot». It's all.