Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Momentum-resolved spectroscopy of a Fermi liquid   We consider a recent momentum-resolved radio-frequency spectroscopy
experiment, in which Fermi liquid properties of a strongly interacting atomic
Fermi gas were studied. Here we show that by extending the Brueckner-Goldstone
model, we can formulate a theory that goes beyond basic mean-field theories and
that can be used for studying spectroscopies of dilute atomic gases in the
strongly interacting regime. The model hosts well-defined quasiparticles and
works across a wide range of temperatures and interaction strengths. The theory
provides excellent qualitative agreement with the experiment. Comparing the
predictions of the present theory with the mean-field Bardeen-Cooper-Schrieffer
theory yields insights into the role of pair correlations, Tan's contact, and
the Hartree mean-field energy shift.

23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom