Kavli Affiliate: Nickolay Y. Gnedin | First 5 Authors: David Robinson, Camille Avestruz, Nickolay Y. Gnedin, Vadim A. Semenov, | Summary: Gas cooling and heating rates are vital components of hydrodynamic simulations. However, they are computationally expensive to evaluate exactly with chemical networks or photoionization codes. We compare two different approximation schemes for gas cooling […]

Kavli Affiliate: Wayne Hu | First 5 Authors: Rayne Liu, Wayne Hu, Daniel Grin, , | Summary: Ultralight axions (ULAs) with masses $10^{-33} lesssim m/{rm eV} lesssim 10^{-12}$ are well motivated in string-inspired models and can be part or all of the dark energy or the dark matter in this range. Since the ULA field […]

Kavli Affiliate: Edward W. Kolb | First 5 Authors: Venus Keus, Edward W. Kolb, , , | Summary: We present a novel Baryogenesis mechanism in which an asymmetry of scalars in a three-Higgs doublet model produced exiting a CP-violating inflationary set-up is translated into an asymmetry of baryons through electroweak instantons. | Search Query: ArXiv […]

Kavli Affiliate: Marcela Carena | First 5 Authors: Marcela Carena, Ying-Ying Li, Tong Ou, Hersh Singh, | Summary: We perform real-time simulation of fermion-bubble scattering during a first order phase transition by which the fermions become massive. This out-of-equilibrium dynamics can generate a CP asymmetry, which is a crucial ingredient for baryon asymmetry generation in […]

Kavli Affiliate: Bradford A. Benson | First 5 Authors: Charles Romero, Massimo Gaspari, Gerrit Schellenberger, Bradford A. Benson, Lindsey E. Bleem | Summary: The hot plasma in galaxy clusters, the intracluster medium (ICM), is expected to be shaped by subsonic turbulent motions, which are key for heating, cooling, and transport mechanisms. The turbulent motions contribute […]

Kavli Affiliate: Chihway Chang | First 5 Authors: Xianzhe TZ Tang, Dillon Brout, Tanvi Karwal, Chihway Chang, Vivian Miranda | Summary: Recent results from Type Ia Supernovae (SNe), baryon acoustic oscillations (BAO), and the cosmic microwave background (CMB) indicate 1) potentially discrepant measurements of the matter density $Omega_m$ and Hubble constant $ H_0 $ in […]

Kavli Affiliate: Gordan Krnjaic | First 5 Authors: Ian Holst, Gordan Krnjaic, Huangyu Xiao, , | Summary: If primordial black holes (PBH) are present in the early universe, their contribution to the energy budget grows relative to that of radiation and generically becomes dominant unless the initial abundance is exponentially small. This black hole domination […]

Kavli Affiliate: Lindsey Bleem | First 5 Authors: Asmaa Mazoun, Sebastian Bocquet, Joseph J. Mohr, Mathias Garny, Henrique Rubira | Summary: We use galaxy cluster abundance measurements from the South Pole Telescope (SPT) enhanced by Multi-Component Matched Filter (MCMF) confirmation and complemented with mass information obtained using weak-lensing data from Dark Energy Survey Year~3 (DES […]

Kavli Affiliate: Salman Habib | First 5 Authors: Cooper Jacobus, Solene Chabanier, Peter Harrington, JD Emberson, Zarija Lukić | Summary: The next generation of cosmological spectroscopic sky surveys will probe the distribution of matter across several Gigaparsecs (Gpc) or many billion light-years. In order to leverage the rich data in these new maps to gain […]

Kavli Affiliate: Emil J. Martinec | First 5 Authors: Emil J. Martinec, Yoav Zigdon, , , | Summary: An effective action for NS5-branes coupled to supergravity is used to derive the full 10d form of horizon-free BPS solutions of fivebranes carrying momentum waves, including both transverse scalar and internal gauge excitations of the branes. When […]