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5 papers · 1 filter
Constraints on Gravitino Decay and the Scale of Inflation using CMB spectral distortions
Emanuela Dimastrogiovanni, Lawrence M. Krauss, Jens Chluba
If local supersymmetry is the correct extension of the standard model of particle physics, then following Inflation the early universe would have been populated by gravitinos produ…
A General Analysis of Direct Dark Matter Detection: From Microphysics to Observational Signatures
James B. Dent, Lawrence M. Krauss, Jayden L. Newstead +1
Beginning with a set of simplified models for spin-0, spin-$\half$, and spin-1 dark matter candidates using completely general Lorentz invariant and renormalizable Lagrangians, we…
Metastability of the False Vacuum in a Higgs-Seesaw Model of Dark Energy
Lawrence M. Krauss, Andrew J. Long
In a recently proposed Higgs-Seesaw model the observed scale of dark energy results from a metastable false vacuum energy associated with mixing of the standard model Higgs particl…
Gravitino Leptogenesis
Lawrence M. Krauss, Andrew J. Long, Subir Sabharwal
We explore here a new mechanism by which the out of equilibrium decay of heavy gravitinos, followed by possible R-parity violating decays in the Minimal Supersymmetric Standard Mod…
A Higgs--Saw Mechanism as a Source for Dark Energy
Lawrence M. Krauss, James B. Dent
Motivated by the see-saw mechanism for neutrinos which naturally generates small neutrino masses, we explore how a small GUT-scale mixing between the Standard Model Higgs and an ot…