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S. Approche-de and . Puisque, (q) : h Irî"*"1r'1e>ç(-ik.r)dr, ce terme a déjà été calculé dans I'autre approche. Ainsi, on peut l'écrire : w "' (q) : -ffi f^r r*

. Partie-non-locale-dans-le-calcul-de-ftra, on a besoin de deux types d'intégrales : I 2(a6(t' )) : Io* r2 J2(lc' r7 Jr(kr) exp l-at(t' )r2l d,r (8.8) re(q, Io* raJr(lc'r1J2(/cr)exp l-ar(l')r2f ar, ainsi que de quelques formules utiles : (B.e) (B.10)

J. Fae, ry-f x2)cos(ar)o*, p.14

H. Puisquede and . Au-xe, L'expression F"o(k,ù : E'irrn+ 1)p4(cos Ui çtt;*?) -LWi@) r2(k,r)r2(kr)rzd,r t:O O devient : F'o(k, q) : + pWf0)rs(o;(0)) + h+s(0)To(CIc(0))l -lAt(2) I o(a, )) * h+s(2)To(q (2) )ll +fr cos(dl É nAtrlrl(ao(r)) + h+s(L)rr(ac(1))l -lA"(z)r'(at(2)) + A;+s(2)Tr(ac(2))ll

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. Rdollotentials-*-'cre, iininuir:ng.the.ur;r.c to i,nrr.rCç.:he atoiric crrre içtE,tes emd t.!le .ri;tonf5 n'lt1'1*'!il';.rcr4:l;:tjie fcr biud,-ng .&trç,ra. , t's:.eGe n+te;,:li.rls were then scteened.. using a liueai: c'o'e'lrqv i:ri':1fr;'-*i:'ii . methoc uda lo,->rLiireL,l .urrectir+ G(ç) In this work, wc study tbe strt'ctulqr à1dri:ùeirEilr].ir; n:rrnical proper',i.es.r,f ljqnrd-metels b3' u^esrs of iutegral eqrntiou {Jrcory. ai';r'v