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Collective excitations and universal coarsening dynamics of a spin-orbit-coupled spin-1 Bose-Einstein condensate
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We study the collective excitation spectrum of a Raman-induced spin-orbit-coupled spin-1 Bose-Einstein condensate confined in a quasi-one-dimensional harmonic trap while varying either the Raman coupling or quadratic Zeeman term by using the Bogoliubov approach. A few low-lying modes, which can be used to delineate the phase boundaries, are identified by exciting them with suitable perturbations. We also investigate the coarsening dynamics of a homogeneous quasi-two-dimensional spin-orbit-coupled spin-1 condensate by quenching from the zero-momentum into the plane wave phase through a sudden change in Raman coupling strength. We demonstrate that the correlation function of the order parameter displays dynamic scaling during the late-time dynamics, allowing us to determine the dynamic critical exponent.
Forward citations
Cited by 2 Pith papers
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Thermal amplification and melting of phases in spin-orbit-coupled spin-1 Bose-Einstein condensates
Finite-temperature Hartree-Fock-Bogoliubov calculations show that thermal fluctuations melt the supersolid stripe phase of a homogeneous spin-orbit-coupled spin-1 BEC, while quantum fluctuations enlarge it.
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Excitations of a supersolid annular stripe phase in a spin-orbital-angular-momentum-coupled spin-1 Bose-Einstein condensate
In an SOAM-coupled spin-1 condensate with 4 angular momentum transfer, the zero-to-annular-stripe transition is preceded by the softening of a symmetric double roton mode at lq = ±4.
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