It is well-known that, due to permanent creation and annihilation of virtual particles, a physical vacuum is not empty space. As a usual continuous media, the physical vacuum possesses the ability of charge screening, which makes the effective charge being a function of the length (or momentum) scale.
It is well-known that, due to permanent creation and annihilation of virtual particles, a physical vacuum is not empty space. As a usual continuous media, the physical vacuum possesses the ability of charge screening, which makes the effective charge being a function of the length (or momentum) scale.
Source: Wikipedia "Quantum triviality" · CC BY-SA 4.0
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