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We present a variational calculation of the energy of an impurity immersed a double Fermi sea of non-interacting Fermions. We show that in the strong-coupling regime, the system undergoes a… Click to show full abstract
We present a variational calculation of the energy of an impurity immersed a double Fermi sea of non-interacting Fermions. We show that in the strong-coupling regime, the system undergoes a first order transition between polaronic and trimer states. Our result suggests that the smooth crossover predicted in previous literature for a superfluid background is the consequence of Cooper pairing and is absent in a normal system.
Keywords:
double fermi;
fermi sea;
impurity immersed;
immersed double
Journal Title: Physical Review A
Year Published: 2020
Link to full text (if available)
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Journal Title: Physical Review A
Year Published: 2020
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!