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What is the signal of a spin wave?

There are many thorough references on this topic. Theoretical Tools for Spin Models in Magnetic Systems - Pires Fundamentals of Magnonics- Rezende Statistical Mechanics of Magnetic Excitations - ...
catalogue_number's user avatar
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Troubles with Haldane Shastry Spin Chain

I'm not sure if this is still relevant to you, but I've been reading this paper recently. I'll just paste my derivation from my note. Please remind me if there's any error. \begin{align} &\...
fdsfsd sd's user avatar
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Mapping a 1D quantum Ising chain to a 2-dimensional classical Ising system

YoungLee has already posted an answer, which is the one I have accepted. However, I want to make some considerations as to why my argument breaks. As I wrote in my original post and as YoungLee points ...
Mr. Feynman's user avatar
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1 vote
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Mapping a 1D quantum Ising chain to a 2-dimensional classical Ising system

I got just stuck at the same point, so here my thoughts on it: $ \langle m ' | e^{\alpha \sigma^x} | m \rangle = \cosh\alpha \delta_{m m'} + \sinh \alpha (1-\delta_{m m'})$ and we claim this to be ...
YoungLee's user avatar
1 vote

Phase transitions in the XXZ model

For the second question, what should be the case is the moment you get to $T>0$, the "quantum-classical correspondence" with $d+1$ dimension breaks down, and it becomes simply like a $d$ ...
Jun_Gitef17's user avatar
1 vote
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Relative Sign In XXZ Chain

The two expressions can be shown to be equivalent using a canonical transformation that implements a spin rotation by $\pi$ about the spin $z$ axis on every other site. Explicitly, this transformation ...
Anyon's user avatar
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