Interaction for the trapped fermi gas from a unitary transformation of the exact two-body spectrum
Artikel i vetenskaplig tidskrift, 2013

We study systems of few two-component fermions interacting in a Harmonic Oscillator trap. The fermion-fermion interaction is generated in a finite basis with a unitary transformation of the exact two-body spectrum given by the Busch formula. The few-body Schrodinger equation is solved with the formalism of the No-Core Shell Model. We present results for a system of three fermions interacting at unitarity as well as for finite values of the S-wave scattering length a(2) and effective range r(2). Unitary systems with four and five fermions are also considered. We show that the many-body energies obtained in this approach are in excellent agreement with exact solutions for the three-body problem, and results obtained by other methods in the other cases.

LARGE SCATTERING LENGTH

IMPENETRABLE BOSONS

SHELL-MODEL

3-BOSON SYSTEM

SHORT-RANGE INTERACTIONS

EFFECTIVE-FIELD THEORY

C-12

FORCES

3-BODY PROBLEM

Författare

Jimmy Rotureau

Chalmers, Teknisk fysik, Subatomär fysik

European Physical Journal D

1434-6060 (ISSN)

Vol. 67 7

Ämneskategorier

Fysik

Atom- och molekylfysik och optik

DOI

10.1140/epjd/e2013-40156-8