# How to include disorder in the numerical computation?

1. May 9, 2007

### PRB147

For example, in tight binding model, the site energy is random
I want to have 100 disorder realizations, then I have the following
two questions:

1. Do different realization needs different seed in the random number generation subroutine?

2. When all realizations are completed, the result should be the simple average? (i.e., $$\frac{\sum_{n=1}^{100} P_n}{100}$$.
)

Last edited: May 9, 2007
2. May 9, 2007

### ZapperZ

Staff Emeritus
Whenever one needs to include some "random" processes in a particular calculation or modeling, one tends to use some form of Monte Carlo algorithm. Not sure if this is applicable to you, but it is used a lot in different areas of physics.

Zz.

3. May 11, 2007

### PRB147

Thanks you, Zz, you are right.