Abstract
The ariational approach is adopted to describe mass- and spin-density fluctuations in po- Y larized 1 iquid He. The ground state is approximated by a suitable Jastrow-Slater wave function which incorporates the effects of spatial correlations. The newly developed Fermi-hypernetted chain theory is employed to analyse the associated theoretical particle - and spin-dependent structure functions, spin-fl ip functions, momentum distribution and one-body density matrix. Numerical results on these quantities are presented for liquid 3~e in the unpolarized and completely polarized state, The effect of polarization on the structure- and radial distribution function is studied in detail, A preli'mf- nary numerical estimate is presented for the magnetic equatl'on of state,
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