Abstract
The static energy-density correlation function 〈S2(0)S2(x)〉−〈S2〉2 is calculated in the critical region for theS4 Ginzburg-Landau-Wilson model at short distances and for nonzero field. Short distance expansion is used and its structure for more complex vertex functions is given. Goldstone mode singularities present at the magnetization curve are taken into account. The main application is given in the theory of polymer solutions. Here, 〈S2(0)S2(x)〉−〈S2〉2 becomes the Fourier transform of the densitydensity correlation.
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