Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Tylutki, Marek"'
We investigate the stability of persistent currents in superfluid fermionic gases confined to a ring geometry. Our studies, conducted at zero temperature using time-dependent density functional theory, cover interaction regimes from strong (unitary F
Externí odkaz:
http://arxiv.org/abs/2406.10088
Publikováno v:
Phys. Rev. A 110, 033303 (2024)
We study the Josephson junction made of a one-dimensional ultradilute quantum liquid in a double-well potential. We analyze the dynamics as a function of the interaction strength and compare the results to the standard bosonic Josephson junction. It
Externí odkaz:
http://arxiv.org/abs/2406.05292
Autor:
Wlazłowski, Gabriel, Xhani, Klejdja, Tylutki, Marek, Proukakis, Nikolaos P., Magierski, Piotr
Publikováno v:
Phys. Rev. Lett. 130, 023003 (2023)
We characterize numerically the dominant dynamical regimes in a superfluid ultracold fermionic Josephson junction. Beyond the coherent Josephson plasma regime, we discuss the onset and physical mechanism of dissipation due to the superflow exceeding
Externí odkaz:
http://arxiv.org/abs/2207.06059
Autor:
Tylutki, Marek, Wlazłowski, Gabriel
Publikováno v:
Phys. Rev. A 103, 051302 (2021)
Reconnecting vortices in a superfluid allow for the energy transfer between different length scales and its subsequent dissipation. The present picture assumes that the dynamics of a reconnection is driven mostly by the phase of the order parameter,
Externí odkaz:
http://arxiv.org/abs/2010.15631
Publikováno v:
Phys. Rev. A 101, 051601(R) (2020)
We calculate the excitation spectrum of a one-dimensional self-bound quantum droplet in a two-component bosonic mixture described by the Gross-Pitaevskii equation (GPE) with cubic and quadratic nonlinearities. The cubic term originates from the mean-
Externí odkaz:
http://arxiv.org/abs/2003.05803
Autor:
Weinberg, Phillip, Tylutki, Marek, Rönkkö, Jami M., Westerholm, Jan, Åström, Jan A., Manninen, Pekka, Törmä, Päivi, Sandvik, Anders W.
Publikováno v:
Phys. Rev. Lett. 124, 090502 (2020)
We discuss quantum annealing of the two-dimensional transverse-field Ising model on a D-Wave device, encoded on $L \times L$ lattices with $L \le 32$. Analyzing the residual energy and deviation from maximal magnetization in the final classical state
Externí odkaz:
http://arxiv.org/abs/1909.13660
Autor:
Tylutki, Marek, Törmä, Päivi
Publikováno v:
Phys. Rev. B 98, 094513 (2018)
We obtain a phase diagram of the spin imbalanced Hubbard model on the Lieb lattice, which is known to feature a flat band in its single-particle spectrum. Using the BCS mean-field theory for multiband systems, we find a variety of superfluid phases w
Externí odkaz:
http://arxiv.org/abs/1806.06964
Autor:
Huhtinen, Kukka-Emilia, Tylutki, Marek, Kumar, Pramod, Vanhala, Tuomas I., Peotta, Sebastiano, Törmä, Päivi
Publikováno v:
Phys. Rev. B 97, 214503 (2018)
We study the attractive Hubbard model with spin imbalance on two lattices featuring a flat band: the Lieb and kagome lattices. We present mean-field phase diagrams featuring exotic superfluid phases, similar to the Fulde-Ferrell-Larkin-Ovchinnikov (F
Externí odkaz:
http://arxiv.org/abs/1802.00274
Publikováno v:
Phys. Rev. A 96, 063603 (2017)
We study the ground state and excitations of a one-dimensional trapped polarized Fermi gas interacting with a single impurity. First, we study the tunnelling dynamics of the impurity through a potential barrier, such as one effectively created by a d
Externí odkaz:
http://arxiv.org/abs/1706.09466
Publikováno v:
Phys. Rev. A 95, 033614 (2017)
We study magnetic solitons, solitary waves of spin polarization (i.e., magnetization), in binary Bose-Einstein condensates in the presence of Rabi coupling. We show that the system exhibits two types of magnetic solitons, called $2\pi$ and $0\pi$ sol
Externí odkaz:
http://arxiv.org/abs/1609.08499