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The study of physical properties of condensed phases of matter, including solids and liquids.

1 vote

Quantity to measure order in crystals

There may be a few options for describing the crystalline order. Personally, I love the one used by Anderson in his book 'Basic Notions of Condensed Matter Physics'. Following him, one writes the atom …
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0 votes

How to get conductivity from Green function $\mathcal{G}(x_1,x_2,\tau)$ of inhomogeneous sys...

There are a few ways to extract transport properties from your single-particle temperature Green's functions. By analytically continuing it to real time $t$, one gets information about how a particle …
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2 votes

Physical meaning of magnetic length

There is a deeper meaning of the magnetic length $l_B$. It is the lattice constant of a two-dimensional (2D) artificial structure. Let's consider a particle moving in 2D plane under a perpendicular un …
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0 votes

Does electron-electron scattering contribute to resistivity?

Previous discussions were all performed at the quantum mechanical level. However, the same question can obviously be asked about classical systems. For example, can the viscosity of liquids (e.g. wate …
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