<s>
CONQUEST	B-Application
is	O
a	O
linear	O
scaling	O
,	O
or	O
O(N )	O
,	O
density	O
functional	O
theory	O
(	O
DFT	O
)	O
electronic	O
structure	O
open-source	O
code	O
.	O
</s>
<s>
Tests	O
on	O
the	O
UK	O
's	O
national	O
supercomputer	O
HECToR	B-Device
in	O
2009	O
demonstrated	O
the	O
capability	O
of	O
the	O
code	O
to	O
perform	O
ground-state	O
calculations	O
on	O
systems	O
of	O
over	O
1,000,000	O
atoms	O
.	O
</s>
<s>
Instead	O
of	O
solving	O
for	O
the	O
Kohn-Sham	O
eigenstates	O
as	O
normal	O
DFT	O
codes	O
do	O
,	O
CONQUEST	B-Application
solves	O
for	O
the	O
one	O
particle	O
density	O
matrix	O
,	O
.	O
</s>
<s>
CONQUEST	B-Application
is	O
jointly	O
developed	O
at	O
the	O
Department	O
of	O
Physics	O
and	O
Astronomy	O
and	O
London	O
Centre	O
for	O
Nanotechnology	O
,	O
University	O
College	O
London	O
in	O
the	O
UK	O
and	O
at	O
the	O
Computational	O
Materials	O
Science	O
Centre	O
,	O
National	O
Institute	O
for	O
Materials	O
Science	O
,	O
Tsukuba	O
,	O
Japan	O
.	O
</s>
