2 citations · 3 across the 4 of their papers we have counts for
6 papers
The Symbiosis of Vainshtein and Chameleon Screening
Sergi Sirera, Tessa Baker, Clare Burrage +2
We present the first study of coexisting Vainshtein and Chameleon screening in cosmic structures. Screening hides fifth forces locally, keeping modified gravity viable. Realistic d…
Rolling Galileons: Evolving Braiding Strength for Viable Dark Energy
James Hallam, Krishna Naidoo, Sergi Sirera +1
Motivated by growing observational indications that dark energy may be dynamical, we introduce Rolling Galileon gravity: a minimal shift-symmetry-breaking extension of the cubic Ga…
Constraints on Horndeski gravity with phantom crossing
Krishna Naidoo, James Hallam, Tessa Baker +1
Gravity models in which the dark energy equation of state crosses , also known as the phantom divide, have received extensive interest due to recent analyses favouring this b…
Bimodular Gravity: Vacuum Evolution with a Frame-Dependent Phantom Crossing
James Hallam, João Magueijo
Unimodular gravity recasts the cosmological constant as an integration constant, fixed by a constraint on the volume element rather than chosen in the action. We ask what becomes o…
First experimental results and optimization study of the portable neutron-gamma imager GN-Vision
Jorge Lerendegui-Marco, James Hallam, Gastón Cisterna +9
GN-Vision is a compact, dual-modality imaging device designed to simultaneously localize the spatial origin of -ray and slow neutron sources, with potential applications in nucl…
Imaging neutrons with a position-sensitive monolithic CLYC detector
J. Lerendegui-Marco, G. Cisterna, J. Hallam +9
In this work, we have developed and characterized a position-sensitive CLYC detector that acts as the neutron imaging layer and -ray Compton scatterer of the novel dual \g-ray a…