Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalized dynamical equation and low energy nucleon dynamics   Low energy nucleon dynamics is investigated by using the generalized
dynamical equation derived in [J. Phys. A v.32, 5657 (1999)]. This equation
extends quantum dynamics to describe the time evolution in the case of
nonlocal-in-time interactions. We show that the use of the generalized
dynamical equation, which allows one to take into account that effective
actions in quantum field theory, arising after integrating out certain degrees
of freedom, are generally nonlocal, provides a new way to formulate the
effective theory of nuclear forces. In this way we construct the most general
possible operator describing the short-range part of the NN interaction in the
1S0 channel. In particular, this operator can be incorporated into the chiral
potential model. This is shown to provide an extension of the standard chiral
approach. Being equivalent to the chiral potential model for some values of the
constants characterizing the short-range of the NN interaction this approach
allows the solutions that cannot be reproduced by any potential model. In this
way we find that for certain values of the constants inconsistent with
potentials models the effect of the short-range forces on the half off-shell 2N
T-matrix with high off-shell momenta grows in magnitude rapidly as the kinetic
energy of outgoing protons decreases at laboratory energies below 15 MeV. We
show that this effect may be the origin of the existing discrepancy between the
theory and experiment in describing the proton-proton bremsstrahlung.

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The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
16
The categories of this paper are: stat