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Results tagged with condensed-matter
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user 48802
The study of physical properties of condensed phases of matter, including solids and liquids.
15
votes
1
answer
2k
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What is the meaning of the diamagnetic current in linear response theory?
When we consider the response of a quantum lattice model with Hamiltonian $H=H_{kin}+H_{int}$ to an applied vector potential $\mathbf{A}(\mathbf{r},t)$ we obtain the current operator $\mathbf{j}(\math …
- 534
0
votes
Real materials described by the fermionic Hubbard model?
The model has sort of a revival due to realistic applications of density functional theory + dynamical mean-field theory (https://www.cond-mat.de/events/correl14/manuscripts/). In particular multi-orb …
- 534
0
votes
Difference Between Ruderman-Kittel-Kasuya-Yosida (RKKY) Interaction and Kondo Effect
This paper should be interesting for you: https://arxiv.org/pdf/0902.0225.pdf, see Figs. 3 and 4.
For a single impurity in a non-interacting bath the spatial dependence of the spin correlation functi …
- 534
0
votes
Momentum distribution Fermi liquid and spectral representation
The spectral representation is very general, while the Fermi liquid at T=0 is just one specific ground state. If we want to learn anything from the spectral representation about the Fermi liquid we wo …
- 534
10
votes
Accepted
Numerical analytic continuation for Green's function
There exists a variety of options for this task but let me stress first that this is an extremely complicated and difficult issue that is still subject of current research because analytical continuat …
- 534