High-momentum oscillating tails of strongly interacting 1D gases in a box

Abstract

We study the momentum distribution of strongly interacting one-dimensional mixtures of particles at zero temperature in a box potential. We find that the magnitude of the $1/k^4$ tail of the momentum distribution is not only due to short-distance correlations, but also to the presence of the rigid walls, breaking the Tan's relation relating this quantity to the adiabatic derivative of the energy with respect to the inverse of the interaction strength. The additional contribution is a finite-size effect that includes a $k$-independent and an oscillating part. This latter, surprisingly, encodes information on long-range spin correlations.

6 pages, 2 figures and supplemental materials

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Cited by in corpus (4)

• Symmetry oscillations in strongly interacting one-dimensional mixtures
• Thermal fading of the $1/k^4$-tail of the momentum distribution induced by the hole anomaly
• Dynamical probing of high-order spin coherence in one-dimensional mixtures
• Symmetry oscillations sensitivity to SU(2)-symmetry breaking in quantum mixtures