A simplified view on fields of modern physics theories, Italian translation. Please note that from historical point of view, this diagram is very simplified. In fact, when quantum mechanics was originally formulated, it was applied to models whose correspondence limit was non-relativistic. Many attempts were made to merge quantum mechanics with special relativity with a covariant equation such as the <a href="https://en.wikipedia.org/wiki/Dirac_equation" class="extiw" title="w:Dirac equation">Dirac equation</a>. In ower days, the relativistic quantum mechanics is now abandoned in favour of the quantum theory of fields.
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