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42 papers · 1 filter
Integral homology of loop groups via Langlands dual groups
Zhiwei Yun, Xinwen Zhu
Let K be a connected compact Lie group, and G be its complexification. The homology of the based loop group ΩK with integer coefficients is naturally a \ZZ-Hopf algebra. After poss…
Searching for Smoking Gun Signatures of Decaying Dark Matter
Joshua T. Ruderman, Tomer Volansky
Clear methods to differentiate between decaying and annihilating dark matter (DM) scenarios are still by and large unavailable. In this note, we study the potential astrophysical s…
Homogeneous formulas and symmetric polynomials
Pavel Hrubes, Amir Yehudayoff
We investigate the arithmetic formula complexity of the elementary symmetric polynomials S(k,n). We show that every multilinear homogeneous formula computing S(k,n) has size at lea…
Non-Equilibrium Electrons and the Sunyaev-Zel'dovich Effect of Galaxy Clusters
Douglas H. Rudd, Daisuke Nagai
We present high-resolution cosmological hydrodynamic simulations of three galaxy clusters employing a two-temperature model for the intracluster medium. We show that electron tempe…
Pseudomoduli Dark Matter
David Shih
We point out that pseudomoduli -- tree-level flat directions that often accompany dynamical supersymmetry breaking -- can be natural candidates for TeV-scale dark matter in models…
The Growth of Black Holes: Insights From Obscured Active Galaxies
Jenny E. Greene, Nadia L. Zakamska, Xin Liu +2
Obscured or narrow-line active galaxies offer an unobstructed view of the quasar environment in the presence of a luminous and vigorously accreting black hole. We exploit the large…