53 citations · 84 across the 5 of their papers we have counts for
5 papers
High-fidelity pseudopotentials for the contact interaction
P. O. Bugnion, P. López Ríos, R. J. Needs +1
The contact interaction is often used in modeling ultracold atomic gases, although it leads to pathological behavior arising from the divergence of the many-body wavefunction when…
High-fidelity contact pseudopotentials and p-wave superconductivity
Pascal O. Bugnion, Richard J. Needs, Gareth J. Conduit
We develop ultratransferable pseudopotentials for the contact interaction that are 100 times more accurate than contemporary approximations. The pseudopotential offers scattering p…
Inhomogeneous state of few-fermion superfluids
P. O. Bugnion, J. A. Lofthouse, G. J. Conduit
The few-fermion atomic gas is an ideal setting to explore inhomogeneous superfluid pairing analogous to the Larkin-Ovchinnikov state. Two up and one down-spin atom is the minimal c…
Exploring exchange mechanisms with a cold atom gas
P. O. Bugnion, G. J. Conduit
Fermionic atoms trapped in a double well potential are an ideal setting to study fundamental exchange mechanisms. We use exact diagonalization and complementary analytic calculatio…
Ferromagnetic spin correlations in a few-fermion system
P. O. Bugnion, G. J. Conduit
We study the spin correlations of a few fermions in a quasi one-dimensional trap. Exact diagonalization calculations demonstrate that repulsive interactions between the two species…