<s>
Path	B-Algorithm
integral	I-Algorithm
molecular	I-Algorithm
dynamics	I-Algorithm
(	O
PIMD	B-Algorithm
)	O
is	O
a	O
method	O
of	O
incorporating	O
quantum	O
mechanics	O
into	O
molecular	O
dynamics	O
simulations	O
using	O
Feynman	O
path	O
integrals	O
.	O
</s>
<s>
In	O
PIMD	B-Algorithm
,	O
one	O
uses	O
the	O
Born	O
–	O
Oppenheimer	O
approximation	O
to	O
separate	O
the	O
wavefunction	O
into	O
a	O
nuclear	O
part	O
and	O
an	O
electronic	O
part	O
.	O
</s>
<s>
There	O
are	O
now	O
a	O
number	O
of	O
commonly	O
used	O
condensed	O
matter	O
computer	O
simulation	O
techniques	O
that	O
make	O
use	O
of	O
the	O
path	O
integral	O
formulation	O
including	O
Centroid	B-Algorithm
Molecular	I-Algorithm
Dynamics	I-Algorithm
(	O
CMD	O
)	O
,	O
Ring	B-Algorithm
Polymer	I-Algorithm
Molecular	I-Algorithm
Dynamics	I-Algorithm
(	O
RPMD	O
)	O
,	O
and	O
the	O
Feynman-Kleinert	O
Quasi-Classical	O
Wigner	O
(	O
FK-QCW	O
)	O
method	O
.	O
</s>
<s>
The	O
same	O
techniques	O
are	O
also	O
used	O
in	O
path	B-Algorithm
integral	I-Algorithm
Monte	I-Algorithm
Carlo	I-Algorithm
(	O
PIMC	B-Algorithm
)	O
.	O
</s>
