By means of low-energy cross-section measurements on ${\mathrm{He}}^{3}$ - ${\mathrm{He}}^{3}$ , we derive an interatomic potential which has a minimum 3.4% deeper than that of ${\mathrm{He}}^{4}$ - ${\mathrm{He}}^{4}$ . We demonstrate that the difference in the potentials is significant. The atomic-mass polarization effect is proposed as a possible explanation for the different potentials.By means of low-energy cross-section measurements on ${\mathrm{He}}^{3}$-${\mathrm{He}}^{3}$, we derive an interatomic potential which has a minimum 3.4% deeper than that of ${\mathrm{He}}^{4}$-${\mathrm{He}}^{4}$. We demonstrate that the difference in the potentials is significant. The atomic-mass polarization effect is proposed as a possible explanation for the different potentials.

Physical Review LettersAug 28, 197237 citations

The low energy neutron scattering lengths of He3 and T and their relation to the four-body problem

H. Rauch

Springer eBooksApr 6, 20082 citations

Ultra-low energy elastic scattering in a system of three He atoms

Vladimir Roudnev

arXiv:physics/0206058Chemical Physics LettersJan 1, 200342 citations

Thermodynamics of a Fermi Liquid beyond the Low-Energy Limit

Andrey V. Chubukov, Dmitrii L. Maslov, Suhas Gangadharaiah +1 more

We consider the nonanalytic temperature dependences of the specific heat coefficient, C(T)/T, and spin susceptibility, chi(s)(T), of 2D interacting fermions beyond the weak-coupling limit. We demonstrate within the Luttinger-Ward formalism that the leading temperature dependences of C(T)/T and chi(s)(T) are linear in T, and are described by the Fermi liquid theory. We show that these temperature dependences are universally determined by the states near the Fermi level and, for a generic interaction, are expressed via the spin and charge components of the exact backscattering amplitude of quasiparticles. We compare our theory to recent experiments on monolayers of He3.We consider the nonanalytic temperature dependences of the specific heat coefficient, C(T)/T, and spin susceptibility, chi(s)(T), of 2D interacting fermions beyond the weak-coupling limit. We demonstrate within the Luttinger-Ward formalism that the leading temperature dependences of C(T)/T and chi(s)(T) are linear in T, and are described by the Fermi liquid theory. We show that these temperature dependences are universally determined by the states near the Fermi level and, for a generic interaction, are expressed via the spin and charge components of the exact backscattering amplitude of quasiparticles. We compare our theory to recent experiments on monolayers of He3.

arXiv:cond-mat/0502542Physical Review LettersJul 8, 200536 citations

Low-Energy Universality in Three-Body Models

A. Delfino, T. Frederico, Lauro Tomio

Few-Body SystemsJun 29, 200026 citations

By means of low-energy cross-section measurements on

{\mathrm{He}}^{3}

{\mathrm{He}}^{3}

, we derive an interatomic potential which has a minimum 3.4% deeper than that of

{\mathrm{He}}^{4}

{\mathrm{He}}^{4}

. We demonstrate that the difference in the potentials is significant. The atomic-mass polarization effect is proposed as a possible explanation for the different potentials.