In a numerical model of a two-species quantum droplet, a long-range Pöschl-Teller interaction suppresses phonons, creates a roton, and opens a zero-momentum gap that grows with interaction range and strength.
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Collective Excitation of Quantum Droplet with Different Ranges of the Interaction of P\"oschl-Teller Potential
In a numerical model of a two-species quantum droplet, a long-range Pöschl-Teller interaction suppresses phonons, creates a roton, and opens a zero-momentum gap that grows with interaction range and strength.