Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum criticality of the sub-ohmic spin-boson model   We revisit the critical behavior of the sub-ohmic spin-boson model. Analysis
of both the leading and subleading terms in the temperature dependence of the
inverse static local spin susceptibility at the quantum critical point,
calculated using a numerical renormalization-group method, provides evidence
that the quantum critical point is interacting in cases where the
quantum-to-classical mapping would predict mean-field behavior. The subleading
term is shown to be consistent with an w/T scaling of the local dynamical
susceptibility, as is the leading term. The frequency and temperature
dependences of the local spin susceptibility in the strong-coupling
(delocalized) regime are also presented. We attribute the violation of the
quantum-to-classical mapping to a Berry-phase term in a continuum path-integral
representation of the model. This effect connects the behavior discussed here
with its counterparts in models with continuous spin symmetry.

1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con