TY - JOUR
T1 - Magnetic solitons in Rabi-coupled Bose-Einstein condensates
AU - Qu, Chunlei
AU - Tylutki, Marek
AU - Stringari, Sandro
AU - Pitaevskii, Lev P.
N1 - Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/3/14
Y1 - 2017/3/14
N2 - 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 2π and 0π solitons, characterized by a different behavior of the relative phase between the two spin components. 2π solitons exhibit a 2π jump of the relative phase, independent of their velocity, the static domain wall explored by Son and Stephanov being an example of such 2π solitons with vanishing velocity and magnetization. 0π solitons instead do not exhibit any asymptotic jump in the relative phase. Systematic results are provided for both types of solitons in uniform matter. Numerical calculations in the presence of a one-dimensional harmonic trap reveal that a 2π soliton evolves in time into a 0π soliton, and vice versa, oscillating around the center of the trap. Results for the effective mass, the Landau critical velocity, and the role of the transverse confinement are also discussed.
AB - 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 2π and 0π solitons, characterized by a different behavior of the relative phase between the two spin components. 2π solitons exhibit a 2π jump of the relative phase, independent of their velocity, the static domain wall explored by Son and Stephanov being an example of such 2π solitons with vanishing velocity and magnetization. 0π solitons instead do not exhibit any asymptotic jump in the relative phase. Systematic results are provided for both types of solitons in uniform matter. Numerical calculations in the presence of a one-dimensional harmonic trap reveal that a 2π soliton evolves in time into a 0π soliton, and vice versa, oscillating around the center of the trap. Results for the effective mass, the Landau critical velocity, and the role of the transverse confinement are also discussed.
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U2 - 10.1103/PhysRevA.95.033614
DO - 10.1103/PhysRevA.95.033614
M3 - Article
AN - SCOPUS:85015441435
SN - 2469-9926
VL - 95
JO - Physical Review A
JF - Physical Review A
IS - 3
M1 - 033614
ER -