Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
CPU time as a function of basis size for three primary steps in BE(5) calculations of the six polyacene chains in Figure 5. Times for the determination of both {λA} and μ are reported per BE iteration (ERI transform needs to be performed only once). Dashed lines are exponential fit, with the scalings indicated to the side.
