Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Simula T"'
The theory of topological quantum computation is underpinned by two important classes of models. One is based on non-abelian Chern-Simons theory, which yields the so-called $\rm{SU}(2)_k$ anyon models that often appear in the context of electrically
Externí odkaz:
http://arxiv.org/abs/2403.06451
Publikováno v:
Phys. Rev. A 96 033623 (2017)
We study computationally the collision dynamics of vortices in a two-dimensional spin-2 Bose-Einstein condensate. In contrast to Abelian vortex pairs, which annihilate or pass through each other, we observe non-Abelian vortex pairs to undergo rungihi
Externí odkaz:
http://arxiv.org/abs/1705.10919
Publikováno v:
Phys. Rev. Lett. 113, 165303 (2014)
We propose a robust imaging technique that makes it possible to distinguish vortices from antivortices in quasi-two-dimensional Bose--Einstein condensates from a single image of the density of the atoms. Tilting the planar condensate prior to standar
Externí odkaz:
http://arxiv.org/abs/1405.4352
Publikováno v:
Phys. Rev. A 88, 043626 (2013)
We propose a nonlinear atom-optics experiment to create diffraction catastrophes threaded by quantized vortex skeletons in Bose-Einstein condensed matter waves. We show how atom-optical aberrations induced in trapped Bose-Einstein condensates evolve
Externí odkaz:
http://arxiv.org/abs/1305.6413
Publikováno v:
J. Phys. Soc. Jpn. 80, 013001 (2011)
We have computed phase diagrams for rotating spin-1 Bose-Einstein condensates with long-range magnetic dipole-dipole interactions. Spin textures including vortex sheets, staggered half-quantum- and skyrmion vortex lattices and higher order topologica
Externí odkaz:
http://arxiv.org/abs/1007.3551
Autor:
Simula, T. P., Machida, K.
Publikováno v:
Phys. Rev. A 82, 063627 (2010)
We have calculated the low-lying elementary excitations of three-dimensional few-vortex arrays in trapped Bose-Einstein condensates. The number of different Kelvin-Tkachenko vortex wave branches matches the number of vortices in the condensate. The l
Externí odkaz:
http://arxiv.org/abs/1007.3548
Publikováno v:
Phys. Rev. A 81, 063623 (2010)
We have solved numerically the ground states of a Bose-Einstein condensate in the presence of dipolar interparticle forces using a semiclassical approach. Our motivation is to model, in particular, the spontaneous spin textures emerging in quantum ga
Externí odkaz:
http://arxiv.org/abs/1007.2027
We propose methods to create fractional vortices in the cyclic state of an F = 2 spinor Bose-Einstein condensate by manipulating its internal spin structure using pulsed microwave and laser fields. The stability of such vortices is studied as a funct
Externí odkaz:
http://arxiv.org/abs/0910.2775
Publikováno v:
Phys. Rev. A 78, 053604 (2008)
We have theoretically studied vortex waves of Bose-Einstein condensates in elongated harmonic traps. Our focus is on the axisymmetric varicose waves and helical Kelvin waves of singly quantized vortex lines. Growth and decay dynamics of both types of
Externí odkaz:
http://arxiv.org/abs/0809.0993
Publikováno v:
Phys. Rev. A 79, 033626 (2009)
We simulate a trapped quasi-two-dimensional Bose gas using a classical field method. To interpret our results we identify the uniform Berezinskii-Kosterlitz-Thouless (BKT) temperature $T_{BKT}$ as where the system phase space density satisfies a crit
Externí odkaz:
http://arxiv.org/abs/0804.0286