154 citations · 364 across the 8 of their papers we have counts for
8 papers
Inflationary Constraints on the Van der Waals Equation of State
G. Vardiashvili, E. Halstead, R. Poltis +2
In spite of the strong observational evidence suggesting a period of rapid expansion in the early universe, the identity of the inflaton field that drove this expansion remains elu…
Dark Sectors and New, Light, Weakly-Coupled Particles
R. Essig, J. A. Jaros, W. Wester +86
Dark sectors, consisting of new, light, weakly-coupled particles that do not interact with the known strong, weak, or electromagnetic forces, are a particularly compelling possibil…
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…
Gravity Waves Seeded by Turbulence and Magnetic Fields From a First Order Phase Transition With Non-Renormalizable Electroweak Vacua
Robert Poltis
It is widely believed that the standard model is a low energy effective theory which may have higher dimensional non-renormalizable operators. The existence of these new operators…
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…
Dark energy, the electroweak vacua and collider phenomenology
Eric Greenwood, Evan Halstead, Robert Poltis +1
Higher dimensional non-renormalizable operators may modify the Standard Model Higgs potential in many interesting ways. Here, we consider the appearance of a second vacuum which ma…