9 papers · 1 filter
Darkly Charged ALPs
Nicolás M. Arenaza, Enrique Fernández-MartÃnez, Belén Gavela +4
The established ALP effective Lagrangian describes the interaction of scalars with approximate shift-symmetry which carry no Standard Model (SM) charges with SM fields. It im…
Tunneling and tidal stripping in multifield ultralight dark matter halos
Benjamin V. Lehmann, Jackie Lodman, Thomas Steingasser
Tidal stripping is a key feature of the evolution of dark matter (DM) halos, and has major implications for the population of low-mass galaxies. In the case of ultralight DM, tidal…
Gauge hierarchy and metastability from Higgs-driven crunching
Sean Benevedes, Ameen Ismail, Thomas Steingasser
We present a new solution to the Higgs hierarchy problem based on dynamical vacuum selection in a landscape scanning the Higgs mass. In patches where the Higgs mass parameter takes…
A new connection between WIMP dark matter and the hierarchy problem
Maximilian Detering, Thomas Steingasser, Tevong You
This work proposes a direct link between the hierarchy problem and Weakly Interacting Massive Particles (WIMPs): we suggest that the small mass of the Higgs boson arises from being…
Precision Unitarity Calculations in Inflationary Models
Thomas Steingasser, Mark P. Hertzberg, David I. Kaiser
We revisit perturbative unitarity in scalar field inflation with a nonminimal coupling, with Higgs inflation serving as the most prominent example. Although such models are phenome…
Higgs Criticality and the Metastability Bound: a target for future colliders
Maximilian Detering, Victor Enguita, Belen Gavela +2
New physics at the TeV scale or lower may destabilise the electroweak vacuum. How low could the vacuum instability scale be? This fundamental question may be tied to a deeper under…