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19922026
Showing 2017 · hep-phShow all

5 papers · 2 filters

hep-ph2017★ 17 cited

Plasma-based wakefield accelerators as sources of axion-like particles

David A. Burton, Adam Noble

We estimate the average flux density of minimally-coupled axion-like particles generated by a laser-driven plasma wakefield propagating along a constant strong magnetic field. Our…

hep-ph2017★ 39 cited

Clockwork Higgs portal model for freeze-in dark matter

Jinsu Kim, John McDonald

The clockwork mechanism can explain interactions which are dimensionally very weak without the need for very large mass scales. We present a model in which the clockwork mechanism…

hep-ph2017★ 155 cited

Ultra slow-roll inflation demystified

Konstantinos Dimopoulos

Ultra-slow-roll (USR) inflation is a new mode of inflation which corresponds to the occasions when the inflaton field must traverse an extremely flat part of the scalar potential,…

hep-ph2017★ 22 cited

Loop inflection-point inflation

Konstantinos Dimopoulos, Charlotte Owen, Antonio Racioppi

A novel inflection-point inflation model is analysed. The model considers a massless scalar field, whose self-coupling's running is stabilised by a non-renormalisable operator. The…

hep-ph2017★ 3 cited

Thermal Inflation with a Thermal Waterfall Scalar Field Coupled to a Light Spectator Scalar Field

Konstantinos Dimopoulos, David H. Lyth, Arron Rumsey

A new model of thermal inflation is introduced, in which the mass of the thermal waterfall field is dependent on a light spectator scalar field. Using the formalism, the "end…