Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strongly correlated materials from a numerical renormalization group
  perspective: How the Fermi-liquid state of Sr$_2$RuO$_4$ emerges   The crossover from fluctuating atomic constituents to a collective state as
one lowers temperature or energy is at the heart of the dynamical mean-field
theory description of the solid state. We demonstrate that the numerical
renormalization group is a viable tool to monitor this crossover in a
real-materials setting. The renormalization group flow from high to arbitrarily
small energy scales clearly reveals the emergence of the Fermi-liquid state of
Sr$_2$RuO$_4$. We find a two-stage screening process, where orbital
fluctuations are screened at much higher energies than spin fluctuations, and
Fermi-liquid behavior, concomitant with spin coherence, below a temperature of
25 K. By computing real-frequency correlation functions, we directly observe
this spin--orbital scale separation and show that the van Hove singularity
drives strong orbital differentiation. We extract quasiparticle interaction
parameters from the low-energy spectrum and find an effective attraction in the
spin-triplet sector.

35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat