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Questions tagged [domain-walls]

The term "Domain wall" has different definitions in different fields. It can be used in Magnetism, Optics or String theory. E.g., in Magnetism it Corresponds to the boundary dividing the regions of homogeneous magnetic polarization.

When to use the tag

Use the tag when asking about phenonmem fitting either definition.

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What are domain walls?

Could someone example the basics of domain walls (string theory) and what their properties are? I've looked around but I can't find much.
blademan9999
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What is the probability in classical field theory?

I am studying domain walls. In Vilenkin's book on topological defects (p. 382) a classical field $\phi(z)$ forms a domain wall, while the field $\chi(x,y,z,t)$ of a particle interacts (scatters) with it. He (without explanation) gives a reflection…
F L
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Domain walls in theories of axions

I'm stuck in figuring out why some theories of axions predict the existence of domain walls. Axions are NG bosons associated with the chiral $U(1)_{PQ}$ symmetry, which was spontaneously broken at some energy scale $f_a$. Incidentally, cosmic…
tak
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Why isn't an in plane (IP) inverter affected during current driven SOT domain wall motion in spintronics?

I am learning about spintronics and started with the NOT gate (the inverter). The gate is represented by an in plane (IP) region in between two anti-parallel out of plane (OOP) regions, the setup lays on a heavy metal. As far as I understand (please…
Mich Vaughan
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Axion domain wall number and heavy quarks

The domain wall number of a UV complete theory of axion is related to the number of PQ-charged heavy quarks that run in the loop. In the case of KSVZ model, $N_{\rm DW}=1$ while in DFSZ, $N_{\rm DW}>1$. On the other hand, domain walls are…
PhysicsStudy
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Derivation in a Landau-Lifshitz ferromagnetism paper

I was reading the following paper by Landau and Lifshitz on ferromagnetism: https://www.sciencedirect.com/science/article/abs/pii/B9780080363646500089 In the paper, the following expression is used for the density of the energy of the system…
Andreas Christophilopoulos
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