Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Theory of Self-Resonance After Inflation, Part 2: Quantum Mechanics
  and Particle-Antiparticle Asymmetry   We further develop a theory of self-resonance after inflation in a large
class of models involving multiple scalar fields. We concentrate on inflaton
potentials that carry an internal symmetry, but also analyze weak breaking of
this symmetry. This is the second part of a two part series of papers. Here in
Part 2 we develop an understanding of the resonance structure from the
underlying many particle quantum mechanics. We begin by a small amplitude
analysis, which obtains the central resonant wave numbers, and relate it to
perturbative processes. We show that the dominant resonance structure is
determined by (i) the nonrelativistic scattering of many quantum particles and
(ii) the application of Bose-Einstein statistics to the adiabatic and
isocurvature modes, as introduced in Part 1 [1]. Other resonance structure is
understood in terms of annihilations and decays. We setup Bunch-Davies vacuum
initial conditions during inflation and track the evolution of modes including
Hubble expansion. In the case of a complex inflaton carrying an internal U(1)
symmetry, we show that when the isocurvature instability is active, the
inflaton fragments into separate regions of \phi-particles and
anti-\phi-particles. We then introduce a weak breaking of the U(1) symmetry;
this can lead to baryogenesis, as shown by some of us recently [2,3]. Then
using our results, we compute corrections to the particle-antiparticle
asymmetry from this preheating era.

3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn