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What is U(1) and SU(2) local gauge symmetry?
Can you explain to me what U(1) and SU(2) local gauge symmetry is?
Sure, U(1) and SU(2) are local gauge symmetries in physics. U(1) is related to electromagnetism and SU(2) is related to the weak nuclear force. They both involve the notion of gauge invariance, which means that the underlying physics should not be affected by certain transformations called gauge transformations.