Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Tetsuo Ohmi"'
Publikováno v:
Physical Review B. 99
Superfluid $^{3}\mathrm{He}\text{\ensuremath{-}}B$ possesses three locally stable vortices known as a normal-core vortex $(o$ vortex), an $A$-phase-core vortex $(v$ vortex), and a double-core vortex $(d$ vortex). In this work, we study the effects of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::453e1760f0ae97f6566d59103d574903
https://doi.org/10.1103/physrevb.99.104513
https://doi.org/10.1103/physrevb.99.104513
Fast control of topological vortex formation in Bose-Einstein condensates by counterdiabatic driving
Publikováno v:
Physical Review A. 93(1):1-8
Fast creation of a single vortex in BEC of alkali-metal atoms at a prescribed position and time is still challenging, even though various methods to create single and multiple vortices have been proposed and demonstrated. Topological vortex formation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53b28939c5a72994892974e473360c25
http://juuli.fi/Record/0274525416
http://juuli.fi/Record/0274525416
Publikováno v:
Journal of Low Temperature Physics. 138:699-704
We report behavior of BEC during topological phase imprinting under the influence of a gravitational field. When the gravitational field is perpendicular to the vortex line as in the experiments, the system is no longer axisymmetric and the vortex is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daa0bf171d88742e256c84a1888049dc
https://doi.org/10.1007/s10909-005-2289-9
https://doi.org/10.1007/s10909-005-2289-9
Autor:
Yoshiko Okamoto, Tetsuo Ohmi
Publikováno v:
Journal of Low Temperature Physics. 134:151-156
We calculated the sound attenuation in the U2D2 phase of solid 3He using methods similar to those developed by Khalatnikov et al.1 Anisotropy of the crystal is also taken into consideration and the kinetic equation and the Bogtzmann equation are expa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::462397731a5e214a630ececf624595de
https://doi.org/10.1023/b:jolt.0000012548.68029.ca
https://doi.org/10.1023/b:jolt.0000012548.68029.ca
Autor:
Yuki Kawaguchi, Tetsuo Ohmi
Publikováno v:
Journal of the Physical Society of Japan. 72:1118-1122
According to the adiabatic approximation atoms moving in a magnetic trap keep their magnetic states. We investigate the validity of this approximation for quantum condensates, where a change of field's direction generates effective interactions betwe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22f403f8f0a0982bebdf5cf88a32228f
https://doi.org/10.1143/jpsj.72.1118
https://doi.org/10.1143/jpsj.72.1118
Autor:
Tetsuo Ohmi, Hitoshi Furukawa
Publikováno v:
Journal of the Physical Society of Japan. 72:342-345
We investigate the effect of the domain wall on the thermal conductivity of solid 3 He in U2D2 phase. In our previous work, assuming that the magnetic plane defects are in the single domain crystal, we showed that our model was able to explain the te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fca427387da915214e10689869d28e84
https://doi.org/10.1143/jpsj.72.342
https://doi.org/10.1143/jpsj.72.342
Publikováno v:
Journal of Physics: Condensed Matter. 14:13481-13491
It is shown that a vortex can be continuously created in a Bose–Einstein condensate with hyperfine spin F = 2 in a Ioffe–Pritchard trap by reversing the axial magnetic field adiabatically. It may be speculated that the condensate cannot be confin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de19daf544d8422ad041e6048d995866
https://doi.org/10.1088/0953-8984/14/49/306
https://doi.org/10.1088/0953-8984/14/49/306
Autor:
Hitoshi Furukawa, Tetsuo Ohmi
Publikováno v:
Journal of the Physical Society of Japan. 71:2178-2185
We calculate the thermal conductivity of solid 3 He in U2D2 phase. In this system, magnons are the dominant heat carriers. The experiment by Feng et al. shows that scattering of magnons by some kind of magnetic defects becomes important at low temper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb68611b83ec290426c698341440d049
https://doi.org/10.1143/jpsj.71.2178
https://doi.org/10.1143/jpsj.71.2178
Autor:
Hitoshi Furukawa, Tetsuo Ohmi
Publikováno v:
Journal of Low Temperature Physics. 126:21-26
We calculate the thermal conductivity of solid 3He in U2D2 phase. In this system, magnons are the dominant heat carriers. The experiment by Feng et al. shows that scattering magnon by some kind of magnetic defects becomes important at low temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a2d1a66941eda2d6017e501764af39b
https://doi.org/10.1023/a:1013746329347
https://doi.org/10.1023/a:1013746329347
Publikováno v:
Journal of Low Temperature Physics. 126:127-132
We cooled down the two-dimensional (2-D) spin-polarized atomic hydrogen (H↓) adsorbed on a small surface called cold spot, whose temperature was kept much colder than the rest of the sample cell. The 2-D density of H↓ was controlled by an input f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a20c4bae35a978527f993a338fdf8ca5
https://doi.org/10.1023/a:1013731320686
https://doi.org/10.1023/a:1013731320686