Frontiers of Physics

, 13:136702 | Cite as

Polarons in alkaline-earth-like atoms with multiple background Fermi surfaces

  • Jin-Ge Chen
  • Yue-Ran Shi
  • Xiang ZhangEmail author
  • Wei ZhangEmail author
Research Article


We study the impurity problem in a Fermi gas of 173Yb atoms near an orbital Feshbach resonance (OFR), where a single moving particle in the 3P0 state interacts with two background Fermi seas of particles in different nuclear states of the ground 1S0 manifold. By employing wave function ansatz to molecule and polaron states, we investigate various properties of the molecule, the attractive polaron, and the repulsive polaron states. In comparison to the case where only one Fermi sea is populated, we find that the presence of an additional Fermi sea acts as an energy shift between the two channels of the OFR. In addition, quantum fluctuations near the Fermi level can also induce sizable effects to various properties of the attractive and repulsive polarons.


Fermi gas alkaline-earth atoms orbital Feshbach resonance polaron 



This work was supported by the National Natural Science Foundation of China (Grant Nos. 11434011, 11522436, 11704408, and 11774425), and the Research Funds of Renmin University of China (Grant No. 16XNLQ03). X. Z. acknowledges support from the National Postdoctoral Program for Innovative Talents (Grant No. BX201601908) and the China Postdoctoral Science Foundation (Grant No. 2017M620991).


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Copyright information

© Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of PhysicsRenmin University of ChinaBeijingChina
  2. 2.Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano DevicesRenmin University of ChinaBeijingChina

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