Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-boson dynamics: A unified approach from weak to strong coupling   We present a novel approximation scheme to describe the influence of a
harmonic bath on the dynamics of a two-level particle over almost the whole
regime of temperatures and coupling to the environment, for a wide class of
bath spectral densities. Starting from the exact path-integral solution for the
two-level system density matrix, effective intra-blip correlations are fully
included, while inter-blip and blip-sojourn interactions are considered up to
first order. In the proper regimes, an excellent agreement with conventional
perturbative approaches and ab-initio path-integral results is found.

33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex