Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Concise Method for Kinetic Energy Quantisation   We present a straightforward method for obtaining exact classical and quantum
molecular Hamiltonians in terms of arbitrary coordinates. As compared to other
approaches the resulting expression are rather compact, the physical meaning of
each quantity is quite transparent, and in some cases the calculation effort
will be greatly reduced. We also investigate systems with constrains to find
the suggested method to be applicable in contrast to most conventional
approaches to kinetic energy operators which cannot directly be applied to
constrained systems. Two examples are discussed in detail, the monohydrated
hydroxide anion and the protonated ammonia dimer.

21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
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The categories of this paper are: eess
34
The categories of this paper are: chem-ph