251 citations · 1.9k across the 44 of their papers we have counts for
7 papers · 1 filter
Primordial Circular Polarization in the Cosmic Microwave Background
Stephon Alexander, Evan McDonough
Circular ("V-mode") polarization is expected to be vanishing in the CMB, since it is not produced in Thomson scattering. However, considering that the conventional CMB anisotropies…
4d models of dS uplift in KKLT
Renata Kallosh, Andrei Linde, Evan McDonough +1
It was shown in arXiv:1808.09428 that the modified 4d version of the KKLT model proposed in arXiv:1707.08678 is inconsistent for large values of the parameter advocated in arXi…
de Sitter Vacua with a Nilpotent Superfield
Renata Kallosh, Andrei Linde, Evan McDonough +1
We study the arguments given in [1] which suggest that the uplifting procedure in the KKLT construction is not valid. First we show that the modification of the SUSY breaking secto…
Quantum Corrections and the de Sitter Swampland Conjecture
Keshav Dasgupta, Maxim Emelin, Evan McDonough +1
Recently a swampland criterion has been proposed that rules out de Sitter vacua in string theory. Such a criterion should hold at all points in the field space and especially at po…
Hidden-Sector Modifications to Gravitational Waves From Binary Inspirals
Stephon Alexander, Evan McDonough, Robert Sims +1
Gravitational wave astronomy has placed strong constraints on fundamental physics, and there is every expectation that future observations will continue to do so. In this work we q…
Observable Chiral Gravitational Waves from Inflation in String Theory
Evan McDonough, Stephon Alexander
We consider gravitational wave production during inflation in type IIB string theory, and the possibility of observable gravitational waves in small field inflation. We show that t…
Chiral Gravitational Waves and Baryon Superfluid Dark Matter
Stephon Alexander, Evan McDonough, David N. Spergel
We develop a unified model of darkgenesis and baryogenesis involving strongly interacting dark quarks, utilizing the gravitational anomaly of chiral gauge theories. In these models…