# A Can Fluctuation-Dissipation Theorem Apply to Magnetic Forces

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1. Jul 21, 2016

### Spin Operator

Let's say I have multiple spin systems (atoms in a protein) in a solution of water and the spin systems are all producing a magnetic field $$\mathrm{B_{loc}}$$ that affects nearby spin systems.
Will the fluctuation-dispersion theorem apply to the force generated by a spin's magnetic field $$Force_{B_{local}}$$? I know it applies to the force R generated by collisions between the spins and water using the Langeval equation but what about the force between spins?

2. Jul 26, 2016

### Greg Bernhardt

Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?