Quick Navigation

Overview Topics Abstract Importance Paper Tools References Reactions Discussion Publication Related

Topics

Quantum Chemistry

Polarons and dressed molecules near narrow Feshbach resonances

arXiv
Authors: P. Massignan

Year

2011

Paper ID

29375

Status

Preprint

Abstract Read

~2 min

Abstract Words

122

Citations

N/A

Abstract

The properties of impurities immersed in a large Fermi sea are naturally described in terms of dressed quasiparticles: attractive and repulsive polarons, and dressed molecules. Motivated by recent experiments on narrow Feshbach resonances, we analyze here how the quasiparticle properties are affected by a non-zero resonance range. We find two interesting analytic results. For large range, the ground state energy close to resonance is shown to become perturbative in the inverse range. In the limit of broad resonance instead, we provide a new Tan's relation linking the impurity ground state energy Edownarrow to the number of atoms in its dressing cloud ΔN. As a corollary, at unitarity one finds ΔN=-Edownarrow/εF, with εF the Fermi energy of the bath.

Why This Paper Matters

  • This paper contributes to the Quantum Chemistry research area in the Quantum Articles archive.
  • It adds a 2011 reference point for readers tracking recent quantum research.
  • The properties of impurities immersed in a large Fermi sea are naturally described in terms of dressed quasiparticles: attractive and repulsive polarons, and dressed molecules.

Paper Tools

Become a member to use research tools

Sign in to open papers, visit source links, share, cite, compare, copy DOI links, request category corrections, and build your reading list.

Become a member Sign in
Show Paper arXiv Publisher Share Cite This Paper Copy URL Compare Copy DOI Add to Reading List Category Correction Request

References & Citation Signals

[1] DOI https://doi.org/arXiv:1112.1029 [2] arXiv https://arxiv.org/abs/1112.1029 [3] Publisher https://arxiv.org/abs/1112.1029

Local Citation Graph (Related-Paper Links)

Current Paper #29375 #78837 TLS loss in superconducting res... #78797 Local polarization control of o... #78792 Demonstration of subspace-searc...

External citation index: OpenAlex citation signal

Community Reactions

Quick sentiment from readers on this paper.

Score: 0
Likes: 0 Dislikes: 0

Sign in to react to this paper.

Discussion & Reviews (Moderated)

Average Rating: 0.0 / 5 (0 ratings)

No written reviews yet.