Composite fermionization of one-dimensional Bose-Bose mixtures
作者： Sascha Zöllner , Hans-Dieter Meyer , Peter Schmelcher
DOI: 10.1103/PHYSREVA.78.013629
关键词: Coupling strength 、 Crossover 、 Symmetry (physics) 、 Condensed matter physics 、 Physics 、 Chemical physics 、 Harmonic (mathematics) 、 Atom 、 Composite number
摘要: We study the ground states of one-dimensional Bose-Bose mixtures under harmonic confinement. As we vary interspecies coupling strength up to limit infinite repulsion, observe a generalized, composite-fermionization crossover. The initially coexisting phases demix as whole for weak intraspecies interactions, whereas atoms localize individually strong repulsion. By symmetry, two components end with strongly overlapping profiles, albeit sensitive symmetry-breaking perturbations. Different pathways emerge if have different atom numbers, or masses and/or trap frequencies.
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128.84.21.199参考文章(44)
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