Short-range expansion for the quantum many-body problem
Abstrak
In this work we derive a systematic short-range expansion of the many-body wave function. At leading order, the wave function is factorized to a zero-energy $s$-wave correlated pair and spectator particles, while terms that include energy derivatives and larger orbital angular momentum two-body functions appear at subleading orders. The validity of the expansion is tested for the two-body case, as well as the many-body case, where infinite neutron matter is considered. An accurate and consistent description of both coordinate-space two-body densities and the one-body momentum distribution is obtained. These results show the possibility to utilize such an expansion for describing different observables in strongly-interacting many-body systems, including nuclear, atomic and condensed-matter systems. This work also enables a systematic description of large momentum transfer reactions in nuclear systems sensitive to short-range correlations, provides a link between such experiments and low-energy nuclear physics, and motivates measurement of new observables in these experiments.
Topik & Kata Kunci
Penulis (3)
R. Weiss
D. Lonardoni
S. Gandolfi
Akses Cepat
- Tahun Terbit
- 2023
- Bahasa
- en
- Sumber Database
- Semantic Scholar
- DOI
- 10.1016/j.physletb.2024.138974
- Akses
- Open Access ✓