Lecture4.Lagrangians.and.Fields

Lecture4.Lagrangians.and.Fields - Standard...

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andard Model Requires Standard Model Requires Treatment of Particles as Fields Hamiltonian, H=E, not Lorentz invariant. QM not a relativistic theory. grangian , sed article hysics Lagrangian, T V, used in particle physics. Creation and annihilation must be described. Relativistic Quantum Field theory!
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Energy is not an invariant: consider four vector momentum
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omentum transformation 4 momentum transformation
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= v p mv
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4 vector dot product: =0123 p p μ μ=0,1,2,3 μ ovariant components Covariant components
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Motivation for Lagrangians and the Law of Least Action
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The Euler
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This note was uploaded on 08/25/2011 for the course PHYSICS 357 taught by Professor Hale,b during the Spring '08 term at Missouri S&T.

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Lecture4.Lagrangians.and.Fields - Standard...

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