- #1

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- TL;DR Summary
- In the computation of the dynamic exponents from the

cubic expansion, I'm asking clarifications and a clear explanation about the interaction term and what are the symmetries in the monomials

I'm reading the https://www.phys.uniroma1.it/fisica/sites/default/files/DOTT_FISICA/MENU/03DOTTORANDI/TesiFin26/Urbani.pdf at paragrph 4.6.2

They write a right hand side:

< f(n

and they want to use a symmetry, for example they assume that <n

It looks like c = d and b = f at first sight, but which is the correct symmetry really? I can't find an explanation in the previous pages: any idea? Thanks

*"The interaction term"*.They write a right hand side:

< f(n

_{a},n_{b}) f(n_{c},n_{d}) f(n_{e},n_{f}) >and they want to use a symmetry, for example they assume that <n

_{a}^{3}n_{d}n_{f}^{2}> is equal to <n_{a}^{3}n_{b}^{2}n_{c}>It looks like c = d and b = f at first sight, but which is the correct symmetry really? I can't find an explanation in the previous pages: any idea? Thanks