<p>The 1st 2 arguments must be * * so as to span all LAMMPS atom types.
The first three C arguments map LAMMPS atom types 1,2,3 to the C
element in the AIREBO file. The final H argument maps LAMMPS atom
type 4 to the H element in the SW file. If a mapping value is
specified as NULL, the mapping is not performed. This can be used
when a <em>airebo</em> potential is used as part of the <em>hybrid</em> pair style.
The NULL values are placeholders for atom types that will be used with
other potentials.</p>
<p>The parameters/coefficients for the AIREBO potentials are listed in
the CH.airebo file to agree with the original <a class="reference internal" href="#stuart"><span class="std std-ref">(Stuart)</span></a>
paper. Thus the parameters are specific to this potential and the way
it was fit, so modifying the file should be done cautiously.</p>
<p>Similarly the parameters/coefficients for the AIREBO-M potentials are
listed in the CH.airebo-m file to agree with the <a class="reference internal" href="#oconnor"><span class="std std-ref">(O’Connor)</span></a>
paper. Thus the parameters are specific to this potential and the way
it was fit, so modifying the file should be done cautiously. The
AIREBO-M Morse potentials were parameterized using a cutoff of
3.0 (sigma). Modifying this cutoff may impact simulation accuracy.</p>
<p>This pair style tallies a breakdown of the total AIREBO potential
energy into sub-categories, which can be accessed via the <a class="reference internal" href="compute_pair.html"><span class="doc">compute pair</span></a> command as a vector of values of length 3.
The 3 values correspond to the following sub-categories:</p>
<ol class="arabic simple">
<li><em>E_REBO</em> = REBO energy</li>
<li><em>E_LJ</em> = Lennard-Jones energy</li>
<li><em>E_TORSION</em> = Torsion energy</li>
</ol>
<p>To print these quantities to the log file (with descriptive column
headings) the following commands could be included in an input script:</p>
<p>Styles with a <em>gpu</em>, <em>intel</em>, <em>kk</em>, <em>omp</em>, or <em>opt</em> suffix are
functionally the same as the corresponding style without the suffix.
They have been optimized to run faster, depending on your available
hardware, as discussed in <a class="reference internal" href="Section_accelerate.html"><span class="doc">Section 5</span></a>
of the manual. The accelerated styles take the same arguments and
should produce the same results, except for round-off and precision
issues.</p>
<p>These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
USER-OMP and OPT packages, respectively. They are only enabled if
LAMMPS was built with those packages. See the <a class="reference internal" href="Section_start.html#start-3"><span class="std std-ref">Making LAMMPS</span></a> section for more info.</p>
<p>You can specify the accelerated styles explicitly in your input script
by including their suffix, or you can use the <a class="reference internal" href="Section_start.html#start-7"><span class="std std-ref">-suffix command-line switch</span></a> when you invoke LAMMPS, or you can
use the <a class="reference internal" href="suffix.html"><span class="doc">suffix</span></a> command in your input script.</p>
<p>See <a class="reference internal" href="Section_accelerate.html"><span class="doc">Section 5</span></a> of the manual for
more instructions on how to use the accelerated styles effectively.</p>
<p>These pair styles do not support the <a class="reference internal" href="pair_modify.html"><span class="doc">pair_modify</span></a>
mix, shift, table, and tail options.</p>
<p>These pair styles do not write their information to <a class="reference internal" href="restart.html"><span class="doc">binary restart files</span></a>, since it is stored in potential files. Thus, you
need to re-specify the pair_style and pair_coeff commands in an input
script that reads a restart file.</p>
<p>These pair styles can only be used via the <em>pair</em> keyword of the
<a class="reference internal" href="run_style.html"><span class="doc">run_style respa</span></a> command. They do not support the
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