Running summarizing tools on a new article
Check the paper below, then start its synthesis.
Energy dynamics of a nonequilibrium unitary Fermi gas
Xiangchuan Yan (Chinese Academy of Sciences, Hainan University), Jing Min (Chinese Academy of Sciences, University of Chinese Academy of Sciences), Dali Sun (Chinese Academy of Sciences), Shi-Guo Peng (Chinese Academy of Sciences, Hainan University), Xin Xie (Chinese Academy of Sciences, University of Chinese Academy of Sciences), Xizhi Wu (Chinese Academy of Sciences, University of Chinese Academy of Sciences), Jiqi Li (Yangtze University, Chinese Academy of Sciences), Wenxing Yang (Yangtze University), Kaijun Jiang (Chinese Academy of Sciences, Wuhan Institute of Quantum Technology)
Abstract: We investigate the energy dynamics of a unitary Fermi gas driven away from equilibrium. The energy is injected into the system by periodically modulating the trapping potential of a spherical unitary Fermi gas, and due to the existence of SO(2,1) symmetry, the breathing mode is excited without dissipation. Through the long-lived breathing oscillation, we precisely measure the energy evolution of the nonequilibrium system during the trap modulation. We find the trapping potential and internal energies increase with modulation time and simultaneously oscillate nearly $\textrm{180}^{\textrm{o}}$ out of phase. At large modulation amplitudes, the energy-injection efficiency is strongly reduced due to the trap anharmonicity. Unlike the equilibrium system, the measured energy evolution agrees well with predictions of the dynamic virial theorem. Our work provides valuable insights into the energy injection and redistribution in a non-equilibrium system, paving a way for future investigations of nonequilibrium thermodynamics.