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The special theory of relativity describes the motion and dynamics of objects moving at significant fractions of the speed of light.

1 vote
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Derivation of the transformation law for spinors

I'm reading the book Quantum Field Theory: An Integrated Approach by Eduardo Fradkin, and I got stuck where the transformation law for spinors $$ \psi'(x') = S(\Lambda) \psi(x) $$ is derived. In chapt …
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1 vote
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Relativistic energy density of a fluid in different frames

I have a fluid in a local inertial frame with stress-energy tensor $T^{\mu\nu}$. In another local inertial frame that is moving with velocity $u$ with respect to the first one, it is said that the ene …
SrJaimito's user avatar
  • 601