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13 February 2025

  • 15:4315:43, 13 February 2025 diff hist +65,877 N Casimir effect Technical: All quantum fields have spin. Quantum fields with spin >= 1 also have polarization tensors. spin 1/2 particles have spin but no polarization, for example. See: Peskin and Shroeder QFT ; sections on QED/Induced representations of little group. current
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