A Challenge to the Standard Cosmological Model
ArXiv 2206.05624 (2022)
Integer conformal dimensions for type IIa flux vacua
Physical Review D American Physical Society 105:10 (2022) 106029
Abstract:We give a concise argument that supersymmetric anti–de Sitter type IIA DeWolfe-Giryavets-Kachru-Taylor flux vacua on general Calabi-Yau’s have, interpreted holographically, integer conformal dimensions for low-lying scalar primaries in the dual conformal field theory. These integers are independent of any compactification details, such as the background fluxes or triple intersection numbers of the compact manifold. For the Kähler moduli and dilaton, there is one operator with Δ=10 and h1,1− operators with Δ=6, whereas the corresponding axions have Δ=11 and Δ=5. For the complex structure moduli, the h2,1 saxions have Δ=2, and the axions Δ=3. We give a tentative discussion of the origin of these integers and effects that would modify these results.
Searches for Connections between Dark Matter and High-Energy Neutrinos with IceCube
ArXiv 2205.1295 (2022)
Integer solutions to the anomaly equations for a class of chiral gauge theories
We find all the integer charge solutions to the equations for the cancellation of local gauge anomalies in a class of gauge theories which extend the Standard Model (SM) by a gauge group of the form G×U(1), where G is an arbitrary semisimple compact Lie group. The SM fermions are assumed to be neutral under G×U(1) gauge interactions, while the new fermions transform in non-trivial representations of both the new and the SM gauge groups. Our analysis is valid also when the latter is embedded in an arbitrary semisimple compact Lie group. Theories with this structure have been recently studied as models of composite axions based on accidental symmetries and can provide a field theory resolution to the axion quality problem. We apply our results to cases of phenomenological interest and prove the existence of charge assignments with Peccei-Quinn symmetry protected up to dimension 18.
PanScales parton showers for hadron collisions: formulation and fixed-order studies
ArXiv 2205.02237 (2022)