Author Archives: growescience

Decay of a single particle

Decay of a single particle

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Phase space and the S matrix

Phase space and the S matrix

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Crossing symmetry

Crossing symmetry

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Analytic continuation

Analytic continuation

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Spontaneous emission rates for hydrogen – general solution

Spontaneous emission rates for hydrogen – general solution

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Forbidden transitions in the harmonic oscillator and hydrogen

Forbidden transitions in the harmonic oscillator and hydrogen

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Magnetic resonance

Magnetic resonance

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Time-dependent perturbation theory for a multi-level system

Time-dependent perturbation theory for a multi-level system

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Selection rules in spontaneous emission – transition between spherically symmetric states not allowed

Selection rules in spontaneous emission – transition between spherically symmetric states not allowed

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Selection rules for spontaneous emission of radiation

Selection rules for spontaneous emission of radiation

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