In QED there is a problem the problem can only be put right in a process called renormalization. This is a mathematical problem the calculations for each coupling on a Feynman diagram are infinite. These infinities can only be canceled out by renormalization.
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From each photon electron coupling EMR will radiates out in a light sphere of quantized spherical wave fronts. Each wave front will be quantized at the level of the Planck Constant.
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The mathematical infinities of QED represent the infinity of our expanding Universe in space and time.
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When these wave fronts come in contact with electrons on the surface of other atom the wave function will collapse into a new quantum particle. In the form of a photon that will have its own position in time and space.
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There is then a quantum leap of energy creating a new wave function of future possibilities. This is a continuous process within our universe that Einstein called stimulated emissions that creates a chain reaction of photon electron couplings. Put very simply the light emitted by an atom now is going to be absorbed by other atoms later on and this is the fundamental process that creates the time continuum or arrow of time.
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The centre of each expanding light sphere represents a new moment in time. The larger the light sphere the greater the probability of any future event. This means that all the possible events in the Universe can be analysable into separate quantum events of which everything is a compound.
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