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All Publications

  • Phantom energy in the nonlinear response of a quantum many-body scar state. Science (New York, N.Y.) Yang, K., Zhang, Y., Li, K. Y., Lin, K. Y., Gopalakrishnan, S., Rigol, M., Lev, B. L. 2024: eadk8978

    Abstract

    Quantum many-body scars are notable as nonthermal, low-entanglement states that exist at high energies. Here, we use attractively interacting dysprosium gases to create scar states that are stable enough to be driven into a strongly nonlinear regime while retaining their character. We measure how the kinetic and total energies evolve after quenching the confining potential. Although the bare interactions are attractive, the atoms behave as if they repel each other: Their kinetic energy paradoxically decreases as the gas is compressed. The missing "phantom" energy is quantified by benchmarking our experimental results against generalized hydrodynamics calculations. We present evidence that the missing kinetic energy is carried by undetected, very high-momentum atoms.

    View details for DOI 10.1126/science.adk8978

    View details for PubMedID 39146435

  • Rapidity and momentum distributions of one-dimensional dipolar quantum gases PHYSICAL REVIEW A Li, K., Zhang, Y., Yang, K., Lin, K., Gopalakrishnan, S., Rigol, M., Lev, B. L. 2023; 107 (6)

    View details for DOI 10.1103/PhysRevA.107.L061302

    View details for Web of Science ID 001012147400004