https://doi.org/10.1140/epjc/s10052-021-08838-x
Regular Article – Theoretical Physics
Phase separation and exotic vortex phases in a two-species holographic superfluid
1
Center for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou University, 225009, Yangzhou, China
2
School of Science, Kunming University of Science and Technology, 650500, Kunming, China
3
Center for Gravitational Physics, Department of Space Science and International Research Institute for Multidisciplinary Science, Beihang University, 100191, Beijing, China
Received:
18
April
2020
Accepted:
3
January
2021
Published online:
13
January
2021
At finite temperature, the stable equilibrium states of coupled two-component Bose Einstein condensations (BECs) with the same conformal mass in both non-rotating and rotating condition can be obtained by studying its real dynamics via holography. The equilibrium state is the state where the free energy reaches the minimum and does not change any more. In the case of no rotation, the spatial phase separated states of the two components become more stable than the miscible condensates state when the direct repulsive inter-component coupling constant 
. Under rotation, the quantum fluid reveals four equilibrium structures of vortex states by varying the 
from the miscible region to the phase separated region. Among the four structures, the vortex sheet solution is the most exotic one that appears in the phase separated region.
Wei-Can Yang and Chuan-Yin Xia contributed equally to this work.
© The Author(s) 2021
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