Supplemental Material for “Itinerant ferromagnetism in 1D two-component Fermi gases”

Yuzhu Jiang, D.V. Kurlov, Xi-Wen Guan, 3 F. Schreck, and G.V. Shlyapnikov 2, 4, 5 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands Department of Theoretical Physics, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia LPTMS, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay, France Russian Quantum Center, Novaya Street 100, Skolkovo, Moscow Region 143025, Russia