Freeze-in dark matter produced by kaons in low-reheating cosmologies requires larger couplings at lower reheating temperatures, directly linking the relic density to observable rates in rare kaon decay experiments.
Q-Balls and Baryogenesis in the MSSM
5 Pith papers cite this work, alongside 494 external citations. Polarity classification is still indexing.
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abstract
We show that Q-balls naturally exist in the Minimal Supersymmetric Standard Model (MSSM) with soft SUSY breaking terms of the minimal N=1 SUGRA type. These are associated with the F- and D-flat directions of the scalar potential once radiative corrections are taken into account. We consider two distinct cases, corresponding to the "H_u L" (slepton) direction with L-balls and the "udd" and "uude" (squark) directions with B-balls. The L-ball always has a small charge, typically of the order of 1000, whilst the B-ball can have an arbitrarily large charge, which, when created cosmologically by the collapse of an unstable Affleck-Dine condensate, is likely to be greater that 10^14. The B-balls typically decay at temperatures less than that of the electroweak phase transition, leading to a novel version of Affleck-Dine baryogenesis, in which the B asymmetry comes from Q-ball decay rather than condensate decay. This mechanism can work even in the presence of additional L violating interactions or B-L conservation, which would rule out conventional Affleck-Dine baryogenesis.
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Hartree quantum fluctuations in 3+1D simulations of the Friedberg-Lee-Sirlin model produce a regime where fluctuations carry significant Noether charge, periodic charge exchange occurs, and some classically stable Q-balls become unstable.
In an unstable Q-ball hairy black hole, the early growth of the weakly responding scalar component is dominated by a second-order QNM rather than its linear response.
Model for cosmological formation of superheavy Q-balls from a broken scale invariance potential that may explain dark matter or early structure formation.
Lecture notes providing a generic introduction to reheating after inflation, covering its theoretical, phenomenological, and observational aspects.
citing papers explorer
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Kaon Portal to Freeze-in Dark Matter
Freeze-in dark matter produced by kaons in low-reheating cosmologies requires larger couplings at lower reheating temperatures, directly linking the relic density to observable rates in rare kaon decay experiments.
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Quantum-Corrected Q-balls in the Friedberg-Lee-Sirlin Model
Hartree quantum fluctuations in 3+1D simulations of the Friedberg-Lee-Sirlin model produce a regime where fluctuations carry significant Noether charge, periodic charge exchange occurs, and some classically stable Q-balls become unstable.
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Early-Time Nonlinear Growth in an Unstable Q-Ball Hairy Black Hole
In an unstable Q-ball hairy black hole, the early growth of the weakly responding scalar component is dominated by a second-order QNM rather than its linear response.
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Superheavy Q-Balls and Cosmology
Model for cosmological formation of superheavy Q-balls from a broken scale invariance potential that may explain dark matter or early structure formation.
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Lectures on Reheating after Inflation
Lecture notes providing a generic introduction to reheating after inflation, covering its theoretical, phenomenological, and observational aspects.