clarification to discussion of former work on SOS algorithms

1 files changed, 2 insertions, 1 deletions

diff --git a/monte-carlo.tex b/monte-carlo.tex
index 57f3859..4b9ba61 100644
--- a/monte-carlo.tex
+++ b/monte-carlo.tex
@@ -434,8 +434,9 @@ $s_i\cdot j=-i-j$. The elements of order two are reflections $s_i$, whose
 action on $\Z$ is transitive. The coupling can be any function of the absolute
 difference $|i-j|$.  Because random choice of reflection will almost always
 result in energy changes so large that the whole system is flipped, it is
-better to select random reflections about integers close to the average state
+better to select random reflections about integers or half-integers close to the average state
 of the system.  A variant of the algorithm has been applied without a field
+whose success relies both on this and on using nonzero $q$
 \cite{evertz_stochastic_1991}.
 
 \section{Performance}