# Questions tagged [spin-models]

A mathematical model used in physics primarily to explain magnetism.

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### What is the signal of a spin wave?

From what I understand, for example in the Ising model, we can probe the correlation function via neutron scattering, and the correlation function gives the magnetic susceptibility for the system. Is ...
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### The notion of "stable mean-field state" of a spin liquid

I have some issues understanding X-G. Wen's notion of stable mean-field states of spin liquids. I understand that the slave-boson mean-field theory is reliable when fluctuations on top of it are weak (...
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### Ground state of the Heisenberg XXX model with a coupling?

I have a one-dimensional Heisenberg chain with a Magnetic field with $N$ sites with $J>0$ \mathcal{H} = -J \sum_{i = 1}^{N-1} \vec{S_i}\cdot \vec{S_{i+1}}- \sum_{i = 1}^N \vec{H}\...
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### Higher-spin ising model optimization problem

Ising model is used as an Ising machine for solving the combinatorial optimization problems. The spin of the Ising machine for this application is normally 1/2. But I wonder if there is any ...
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### Lattice symmetry operations in strongly spin-orbit coupled systems

I think this is a FAQ when we are studying the rotation operations of lattice spin systems, but I can't find much references. Background Considering a Hamiltonian defined on a triangular lattice: \...
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### Integrable many-body system and complete set of conserved charges

In an integrable quantum system (say XXZ model), where there is an extensive number of conserved charges, does the set of local conserved charges obtained from expanding the log of the transfer matrix ...
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### $p$-state Potts Model and symmetry [closed]
Consider a lattice spin system where the spin variable is the $i$th site can have $p$ values, 0, 1, . . . , p − 1, and the nearest-neighbor Hamiltonian describes the system This is called a $p$-state ...