Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diversity of coherences and origin of electronic transitions of
  supermolecular nanoring   Quantum coherence is highly involved in photochemical functioning of complex
molecular systems. Co-existence and intermixing of electronic and/or
vibrational coherences, while never unambiguously identified experimentally,
has been proposed to be responsible for this phenomenon. Analysis of
multidimensional spectra of a synthetic belt-shaped molecular six-porphyrin
nanoring with an inner template clearly shows a great diversity of separable
electronic, vibrational and mixed coherences and their cooperation shaping the
optical response. The results yield clear assignment of electronic and vibronic
states, estimation of excitation transfer rates, and decoherence times.
Theoretical considerations prove that the complexity of excitation dynamics and
spectral features of the nanoring excitation spectrum is due to combined effect
of cyclic symmetry, small geometrical deformations, and vibronic coupling.

21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ