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# Author Archives: growescience

## Nonrelativistic field theory – Fock space to position space

Nonrelativistic field theory – Fock space to position space Advertisements

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## Principle of least action – where does it come from?

Principle of least action – where does it come from?

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## Amateur astrophotos

I’ve posted a few photos of objects in the night sky that I’ve taken with my home telescope, from my back yard. The photos aren’t Hubble quality, of course, but considering that I live in a moderately light-polluted area, they’re … Continue reading

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## Nonrelativistic field theory – number, creation and annihilation operators

Nonrelativistic field theory – number, creation and annihilation operators

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## Nonrelativistic field theory – Fourier expansion

Nonrelativistic field theory – Fourier expansion

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## Nonrelativistic field theory – SchrÃ¶dinger equation

Nonrelativistic field theory – SchrÃ¶dinger equation

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## Klein-Gordon equation with scalar 1/r potential

Klein-Gordon equation with scalar 1/r potential

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