QED vacuum

QED vacuum is the vacuum explained by quantum electrodynamics. In this theory, a vacuum is not fully empty. Instead, it is the lowest-energy state of the electromagnetic field.

It is used to understand high-energy physics, atomic physics, and light behaviour and matter at small scales.

 Effects 

 Quantum 
Due of quantum effects, pairs of particles and antiparticles can briefly appear and disappear, which is known as virtual particles. These cannot be directly observed, but its effects can be measured.

 Physical 
It affects how light and the behaviour of charged particles. For example, it can slightly change the motion of electrons and the way light travels in very strong electromagnetic fields. 

 References 

Category:Physics
Category:Electromagnetism