Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Soft Hubbard gaps in disordered itinerant models with short-range
  interaction   We study the Anderson-Hubbard model in the Hartree-Fock approximation and the
exact diagonalization under the coexistence of short-range interaction and
diagonal disorder. We show that there exist unconventional soft gaps, where the
single-particle (SP) density of states (DOS) $A$ follows a scaling in energy
$E$ as $A(E)\propto \exp[-(-\gamma\log |E-E_F|)^d]$ irrespective of electron
filling and long-range order. Here, $d$ is the spatial dimension, $E_F$ the
Fermi energy and $\gamma$ a non-universal constant. We propose a multi-valley
energy landscape as their origin. Possible experiments to verify the present
theory are proposed.

1
The categories of this paper are: cs
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an