The name is absent

the partition function can be written just in the terms of the fields as

Zc(ns,n_p, V, T) = Z₀ ʃ Dw₊ j Dw_ exp(-H[w₊, w_]),      (8.32)

where the effective Hamiltonian

H[w₊,wJ] = У dr[(p₀∕χps)^i-ip₀w₊∖ - n_p∖nQ_p[iw₊ - w_] - n_slnQ_s[zw₊ + w_].

(8.33)

Z₀ represents the partition function of an ideal gas of ng solvent and np polymer
molecules in volume V, Qp is the normalized single-chain partition function of a
polymer molecule in the complex external field [iw₊ — w_], given by eq. 8.20, and
Qs is the normalized partition function of a single solvent molecule in the complex
external field [zw₊ + w_], given by

Qs[iw₊+w~] = У drexp(-[zw₊(r) + w_(r)]).          (8.34)

Thus, the particle-field transformation is complete. The average segment density of
the polymer is given as, {p_p(r))_w+,w-, where

ʌ / r. _n δ In Q_p[iw₊ -w_]

_№(r;[.w_t-W-|) = ^_F              .           (8∙35)

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