2 papers
cond-mat.quant-gas2026
Benchmarking the fermionic quasi-1D many-body problem
Ekaterina Gradova, Fr{é}d{é}ric Chevy
We investigate the validity of effective one-dimensional models for quasi-1D fermionic systems by benchmarking a coupled-channel approach against the exact low-energy theory derive…
cond-mat.quant-gas2025
Downfolding a quantum many-body system: the quasi-1D Fermi polaron
Lovro Anto Barišić, Giuliano Orso, Frédéric Chevy +1
We investigate the properties of an impurity immersed in an ensemble of spin-polarized fermions confined in a tight quantum wire. We use a non-perturbative variational approach tha…