Spin-charge separation in two-component Bose-gases

Abstract

We show that one of the key characteristics of interacting one-dimensional electronic quantum systems, the separation of spin and charge, can be observed in a two-component system of bosonic ultracold atoms even close to a competing phase separation regime. To this purpose we determine the real-time evolution of a single particle excitation and the single-particle spectral function using density-matrix renormalization group techniques. Due to efficient bosonic cooling and good tunability this setup exhibits very good conditions for observing this strong correlation effect. In anticipation of experimental realizations we calculate the velocities for spin and charge perturbations for a wide range of parameters.

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• A unified ab-initio approach to the correlated quantum dynamics of ultracold fermionic and bosonic mixtures
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• Entanglement growth and simulation efficiency in one-dimensional quantum lattice systems
• Andreev-Bashkin effect in superfluid cold gases mixture
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• Motion of a distinguishable impurity in the Bose gas: Arrested expansion without a lattice and impurity snaking
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• Real-time spin-charge separation in one-dimensional Fermi gases from generalized hydrodynamics
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• Dynamical simulations of charged soliton transport in conjugated polymers with the inclusion of electron-electron interactions
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• Stability of low-dimensional multicomponent Bose gases
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• Confinement: a real-time visualization
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• Dynamical Structure Factor and Spin-Density Separation for a Weakly-Interacting Two-Component Bose Gas
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• Coupled-cluster theory for trapped bosonic mixtures
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• Spinons and Holons with Polarized Photons in a Nonlinear Waveguide
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• Probing $p$-wave effects in spin-density separation of Bose mixtures with the dynamic structure factor
• Sine-Gordon model coupled with a free scalar field emergent in the low-energy phase dynamics of a mixture of pseudospin-1/2 Bose gases with interspecies spin exchange
• Generation of spin currents by a temperature gradient in a two-terminal device