# Effect of Rashba spin-orbit and Rabi couplings on the excitation spectrum of binary Bose-Einstein condensates

@article{Ravisankar2021EffectOR, title={Effect of Rashba spin-orbit and Rabi couplings on the excitation spectrum of binary Bose-Einstein condensates}, author={R. Ravisankar and H. Fabrelli and Arnaldo Gammal and Paulsamy Muruganandam and Pankaj Kumar Mishra}, journal={Physical Review A}, year={2021} }

We present the collective excitation spectrum analysis of binary Bose-Einstein condensates (BECs) with spin-orbit (SO) and Rabi couplings in a quasi-two-dimensional system. In particular, we investigate the role of SO and Rabi coupling strengths in determining the dynamical stability of the coupled BECs using Bogoliubov-de Gennes (BdG) theory. Using the eigenergy of BdG spectrum, we confirm the existence of phonon, roton, and maxon modes with weak repulsive intraand interspecies contact…

## References

SHOWING 1-10 OF 77 REFERENCES

### Spotlighting phase separation in Rashba spin-orbit coupled Bose–Einstein condensates in two dimensions

- Physics
- 2018

We study the system of spin-orbit (SO) coupled Bose–Einstein condensates (BEC) with Rabi coupling in quasi-two dimensions characterized by unequal Rashba and Dresselhaus couplings. The ground state…

### Properties of Bose gases with the Raman-induced spin–orbit coupling

- Physics
- 2012

In this paper we investigate the properties of Bose gases with Raman-induced spin–orbit (SO) coupling. It is found that the SO coupling can greatly modify the single-particle density of state, and…

### Bright soliton dynamics in spin orbit-Rabi coupled Bose-Einstein condensates

- PhysicsCommun. Nonlinear Sci. Numer. Simul.
- 2017

### Zero-momentum coupling induced transitions of ground states in Rashba spin–orbit coupled Bose–Einstein condensates

- Physics
- 2014

We investigate the transitions of ground states induced by zero momentum (ZM) coupling in pseudospin-1/2 Rashba spin–orbit coupled Bose–Einstein condensates confined in a harmonic trap. In a weak…

### Exotic superfluidity in spin-orbit coupled Bose-Einstein condensates

- Physics
- 2012

We study the superfluidity of a spin-orbit coupled Bose-Einstein condensate (BEC) by computing its Bogoliubov excitations, which are found to have two branches: one is gapless and phonon-like at long…

### Quenching dynamics of the bright solitons and other localized states in spin–orbit coupled Bose–Einstein condensates

- PhysicsJournal of Physics B: Atomic, Molecular and Optical Physics
- 2020

We study the dynamics of binary Bose–Einstein condensates made of ultracold and dilute alkali-metal atoms in a quasi-one-dimensional setting. Numerically solving the two coupled Gross–Pitaevskii…

### Spin-orbit-coupling–induced anharmonic collective modes in a Bose-Einstein condensate

- Physics
- 2018

The collective excitations of a spin-orbit–coupled Bose-Einstein condensate are investigated by using a variational method and numerical simulation. The collective modes are depicted in zero-momentum…

### Matter-wave dark solitons and their excitation spectra in spin-orbit coupled Bose-Einstein condensates

- Physics
- 2013

We present three types of dark solitons in quasi–one-dimensional spin-orbit coupled repulsive Bose-Einstein condensates. Among these families, two are always stable, while the third one is only…

### Bifurcations, stability and mode evolution in segregated quasi-2D condensate mixtures

- Physics
- 2017

We present new features of low energy Bogoliubov quasiparticle excitations of a two-component Bose–Einstein condensate (TBEC) in quasi-2D geometry at zero temperature using Hartree–Fock–Bogoliubov…

### Collective excitation of two-dimensional Bose–Einstein condensate in liquid phase with spin–orbit coupling

- Physics, ChemistryJournal of Physics B: Atomic, Molecular and Optical Physics
- 2020

We have studied the collective excitation of Bose–Einstein condensate of short-range weak interacting atoms with spin–orbit coupling (SOC) in two dimensions in the liquid phase. In our study, we have…