for O(1) Phi^{4} spin model 
Spins with one components: S=x local field : h_{local}=h Energy=h.x+x^{2}+ landa.(x^{2}1)^{2} P(x)=e^{Energy/T}.dx =e^{h.xx2 landa.(x21)2}.dx 
The Fast Linear Algorithm (FLA) uses the rejection method with a function consisting of n steps (see the figure and article for more details) 
1.  To use the Fast Linear Algorithm you must have :  


2.  AND you must have the tables in the file "O1_Phi4.res". Two choices: . You can choose to download the file O1_Phi4.res already done or make one with create_O1_Phi4.out (.exe for windows), run it, and follow the instructions.  


