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wormholes and supersymmetry
wormholes and supersymmetry

... -:,pproach in which one allows the cyclic mode of () to he imaginary,9,17 on the grounds that the fields in the path integral are ultimately operators on quantum states, and may have real or imaginary eigenvalues depending on the kind of states hetween which one is computing the tunneling amplitude. ...
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... then we achieve (5.2). In short: every solution is translationally equivalent to the primitive solution. In this regard the free fall problem is distinguished from both the free particle problem General solution of ẍ = 0 reads x(t) = a + bt. Take x(t) = Bt to be the primitive solution (B a prescrib ...
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Chapter 1. The Basics of Quantum Mechanics

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First-order strong-field QED processes in a tightly focused laser beam

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Lecture 10 Example: Particle in a box

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Why is there an invariant speed c?
Why is there an invariant speed c?

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Propagator

In quantum mechanics and quantum field theory, the propagator gives the probability amplitude for a particle to travel from one place to another in a given time, or to travel with a certain energy and momentum. In Feynman diagrams, which calculate the rate of collisions in quantum field theory, virtual particles contribute their propagator to the rate of the scattering event described by the diagram. They also can be viewed as the inverse of the wave operator appropriate to the particle, and are therefore often called Green's functions.
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