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arXiv · 2502.08339

Thermal behavior of Bose-Einstein condensates of polar molecules

Juan Sánchez-Baena·Gerard Pascual·Raúl Bombín·Ferran Mazzanti·Jordi Boronat
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Abstract

We use the finite-temperature extended Gross-Pitaevskii equation (TeGPE) to study a condensate of dipolar NaCs molecules under the conditions of the very recent, breakthrough experiment [Bigagli et.al., Nature 631, 289 (2024)]. We report the condensate fraction of the system, and its density profile after a time-of flight expansion for the coldest experimental case, finding excellent agreement with the experimental measurements. We also report the peak density of the ground state and establish a comparison with the experimental estimates. Our results, derived from the TeGPE formalism, successfully describe the Bose-Einstein condensation of polar molecules at finite temperature.

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Juan Sánchez-Baena, Gerard Pascual, Raúl Bombín, Ferran Mazzanti, Jordi Boronat. 2025-02-12. Thermal behavior of Bose-Einstein condensates of polar molecules. https://doi.org/10.1103/9sbg-6qqw

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