2020/03/27 by Pavel A. Andreev, Andreev, Pavel A., K. V. Antipin +3
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High-Energy Particle Collisions Research #Optical properties and cooling technologies in crystalline materials #Quantum Gases (cond-mat.quant-gas)
paper · pdf · doi:10.48550/arxiv.2003.12547
openalex publication_date 2020/03/27 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
Repulsive Bose-Einstein condensate, where the short-range interaction is\nincluded up to the third order by the interaction radius, demonstrates\nexistence of a bright soliton in a narrow interval of parameters. This soliton\nis studied here for the boson-fermion mixture, where spin-1/2 fermions are\nconsider in the regime of full spin polarization. Influence of fermions via the\nboson-fermion interaction is considered up to the third order by the\ninteraction radius. Fermions themselves are considered by hydrodynamic model\nincluding the pressure evolution equation. Interaction between fermions is\nconsidered. The first order by the interaction radius gives zero contribution\nin the Euler equation and the pressure evolution equation, but the third order\nby the interaction radius provides nonzero contributions in both equations.\nRepulsive (attractive) boson-fermion interaction leads to the bright (dark)\nfermionic soliton.\n