what does it means exactly?
take the d-dimensional ising model as an example
suppose d>d_c
does it mean that the critical temperature is correctly captured by the mean field theory?
or does it just mean that the critical indices are correctly captured by the mean field theory?
take the d-dimensional ising model as an example
suppose d>d_c
does it mean that the critical temperature is correctly captured by the mean field theory?
or does it just mean that the critical indices are correctly captured by the mean field theory?