Quasars at cosmic dawn are powerful probes to the formation and
growth of early supermassive black holes in the universe, their
connections to high-redshift galaxy and structure formation, and
the evolution of the intergalactic medium at the epoch...
Many theories of dark energy predict a time-varying dark energy
density, in stark contrast to Einstein’s cosmological constant.
Earlier this year, we saw the first hints of an observational
preference for such dynamical theories. In this talk, I...
Abstract: Some of the most fascinating
phenomena in nature arise when electrons behave as quantum
mechanical waves that interact with one another. But how can we
visualize these electronic waves in action? In this talk, I will
introduce the Quantum...
Frequent dynamical encounters in globular clusters significantly
enhance the production of multi-messenger phenomena. It is now well
established that globular clusters host robust populations of
compact objects, including low-mass X-ray binaries...
A large fraction of exoplanetary systems contain planets that
orbit very close to their host stars. With orbital periods in the
range of days to weeks, tidal forces become important and lead to
significant orbital and physical effects on the planets...
After the first waves of gravitational-wave detections, it often
seems as though we are left with more questions than answers. The
hope of finding "one formation channel to rule them all" has given
way to "one channel for every system."
In this talk I will do three things. First, I will outline the
conditions under which the interaction rate of inelastic
processes with a system consisting of N targets scales as N^2.
Second, I will present computations of interaction rates for...
