154 citations · 364 across the 8 of their papers we have counts for
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Testing Chameleons Using Neutron Interferometry
Robert Poltis
Chameleons are a well motivated scalar field that might explain the observed late time accelerated expansion of the universe. Chameleons possess the interesting property that their…
The blackness of the cosmic microwave background spectrum as a probe of the distance-duality relation
George F. R. Ellis, Robert Poltis, Jean-Philippe Uzan +1
A violation of the reciprocity relation, which induces a violation of the distance duality relation, reflects itself in a change in the normalisation of the cosmic microwave spectr…
Are priors responsible for cosmology favoring additional neutrino species?
Alma X. Gonzalez-Morales, Robert Poltis, Blake D. Sherwin +1
It has been suggested that both recent cosmological data and the results of flavor oscillation experiments (MiniBooNE and LSND) lend support to the existence of low-mass sterile ne…
Can primordial magnetic fields seeded by electroweak strings cause an alignment of quasar axes on cosmological scales?
Robert Poltis, Dejan Stojkovic
The decay of non-topological electroweak strings formed during the electroweak phase transition in the early universe may leave an observable imprint in the universe today. Such st…