Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Affleck-Dine Leptogenesis with Varying Peccei-Quinn Scale   The Affleck-Dine leptogenesis scenario along the LHu flat direction is
reconsidered. It is known that successful Affleck-Dine leptogenesis requires
that the lightest neutrino mass is extremely small. This situation can be
significantly relaxed if the neutrino mass in the early universe is different
from the present one. We consider a supersymmetric
Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) type model, which provides a solution
to the strong CP problem and generates a SUSY mu-term and right-handed neutrino
masses. If the PQ scale during lepton number generation is much larger than the
present value, leptogenesis is very efficient so that enough baryon number can
be generated without introducing a hierarchically small neutrino mass. The
final baryon asymmetry is related to the mu-term, and hence linked to the level
of electroweak fine-tuning. We also show the PQ breaking scalar dynamics that
keeps a large PQ breaking scale during inflation and lepton number generation.
The mu-term generating superpotential plays an important role for preserving
the lepton asymmetry during saxion oscillation. In this scenario, the axion
isocurvature perturbation is naturally suppressed.

18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con