Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Baryon Asymmetry, Supersymmetry and Gravitational Anomalies   We discuss two independent issues about the baryon asymmetry of the universe.
First, assuming that it is generated by an unspecified source at high
temperatures, we study the effects of non-perturbative $SU(2)_W$ dynamics above
the electroweak scale, in the context of supersymmetric models. We find that
there is a substantial difference with the nonsupersymmetric case with the net
effect of relaxing previous bounds on B and L violating interactions. In
particular supersymmetry allows neutrino masses as large as 10 eV (preferred by
solar neutrino and COBE data and measurable at future neutrino oscillation
experiments). Second, we argue that the existence of a mixed lepton
number-gravitational anomaly in the standard model will induce B-L violating
interactions. These transitions would be catalized by Einstein-Yang-Mills
instantons or sphalerons and could create a primordial B-L asymmetry at Planck
temperatures or lower. Gravity (and the anomaly structure of the standard
model) could then be the ultimate source of the baryon asymmetry. We analyze
the viability of the presently known gravitational instantons and sphalerons to
realize this scenario. (Talk presented by FQ at the Texas/Pascos Conference,
Berkeley Dec.1992.)

24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom