Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fate of a multiple-band Fermi liquid that is coupled with critical
  $\phi^4$ bosons   Multiple-band nature of electronic energy bands leads to novel physical
effects in solids. In this paper, we clarify physical properties of a Fermi
system with a pair of electron and hole Fermi surfaces (FSs), whose coupling is
mediated by a critical U(1) boson field. By using a one-loop renormalization
group analysis, we show that when the boson field undergoes a quantum phase
transition with broken U(1) symmetry, the multiple-band Fermi system shows a
non-Fermi liquid (non-FL) behaviour in its thermodynamic and magnetic
properties. At a quantum critical point (QCP), Fermi velocities of the two FSs
are renormalized into a same critical velocity as a boson velocity, and the
fermion's density of states (DOS) shows a pseudo-gap behaviour with a
logarithmic energy dependence at the QCP.

1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn