Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Karpiuk, Tomasz"'
We study a mixture of a repulsive dipolar condensate and a degenerate Fermi gas in a quasi-one-dimensional geometry. We demonstrate that the presence of fermions, which attract bosons, drastically changes the behavior of the dipolar condensate. For s
Externí odkaz:
http://arxiv.org/abs/2401.05890
We present a theoretical analysis of phase separations between two repulsively interacting components in an ultracold fermionic gas, occurring at the dimensional crossover in a harmonic trap with varying aspect ratios. A tailored kinetic energy funct
Externí odkaz:
http://arxiv.org/abs/2311.05963
We investigate electromagnetic and gravitational radiation generated during a process of the tidal stripping of a white dwarf star circulating a black hole. We model a white dwarf star by a Bose-Fermi droplet at zero temperature and use the quantum h
Externí odkaz:
http://arxiv.org/abs/2208.11525
Publikováno v:
Physical Review A 105, 023315 (2022)
We develop a model of a binary fermionic mixture, consisting of large number of atoms, applicable at nonzero temperatures, in the normal phase. We use this approach to study dynamics of degenerate Fermi systems under various perturbations. For exampl
Externí odkaz:
http://arxiv.org/abs/2108.11134
Autor:
Trappe, Martin-Isbjörn, Grochowski, Piotr T., Hue, Jun Hao, Karpiuk, Tomasz, Rzążewski, Kazimierz
Publikováno v:
New J. Phys. 23, 103042 (2021)
We predict the phase separations of two-dimensional Fermi gases with repulsive contact-type interactions between two spin components. Using density-potential functional theory with systematic semiclassical approximations, we address the long-standing
Externí odkaz:
http://arxiv.org/abs/2106.01068
Publikováno v:
New J Phys. 22, 103025 (2020)
We study the properties of the Bose-Fermi mixture from the perspective of reaching a state of a self-bound quantum droplet. The variational analysis shows that the system exhibits bistability. For weak repulsion between bosons, one of the equilibrium
Externí odkaz:
http://arxiv.org/abs/2004.07008
Publikováno v:
Phys. Rev. Lett. 125, 103401 (2020)
By analyzing breathing mode of a Bose-Einstein condensate repulsively interacting with a polarized fermionic cloud, we further the understanding of a Bose-Fermi mixture recently realized by Lous et al. [\textit{Phys. Rev. Lett.} \textbf{120}, 243403]
Externí odkaz:
http://arxiv.org/abs/1911.10582
Publikováno v:
Phys. Rev. A 101, 013618 (2020)
We study spin-dipole oscillations of a binary fermionic mixture at nonzero temperatures. We apply the atomic-orbital method combined with the Monte Carlo technique based sampling to probe finite temperatures. Our results agree quantitatively with rec
Externí odkaz:
http://arxiv.org/abs/1908.08367
Publikováno v:
SciPost Phys. 8, 066 (2020)
We calculate frequencies of collective oscillations of two-component Fermi gas that is kept on the repulsive branch of its energy spectrum. Not only is a paramagnetic phase explored, but also a ferromagnetically separated one. Both in-, and out-of-ph
Externí odkaz:
http://arxiv.org/abs/1908.07771
Publikováno v:
Scientific Reports, (2021) 11:2286
We study the final stages of the evolution of a binary system consisted of a black hole and a white dwarf star. We implement the quantum hydrodynamic equations and carry out numerical simulations. As a model of a white dwarf star, we consider a zero
Externí odkaz:
http://arxiv.org/abs/1907.12419