Red supergiants (RSGs) are the helium-fusing descendants of
moderately massive (10-25Mo) stars. As the coldest and largest (in
physical size) members of the massive star population, these
evolved stars serve as ideal "magnifying glasses" for...
Several lines of evidence, both theoretical and observational,
indicate that additional planets in the outer solar system remain
to be discovered. Most recently, attention has been focused on
'Planet Nine',a few Earth mass planet with a moderate...
When absorbing boundary conditions are used to evaporate a black
hole in AdS/CFT, we show that there is a phase transition in the
location of the quantum Ryu-Takayanagi surface, at precisely the
Page time. The new RT surface lies slightly inside the...
The observation of mergers of black holes and neutron stars has
established gravitational-wave astronomy as powerful tool to
understand the Universe. After a brief introduction to
gravitational waves and how the detectors work, I will discuss
the...
The cosmic microwave background (CMB) research told us a
remarkable story: the structure we see in our Universe such as
galaxies, stars, planets, and eventually ourselves originated from
tiny quantum fluctuations generated in the early Universe...
We construct a general form for an F-theory Weierstrass model
over any base giving a 6D or 4D supergravity theory with gauge
group SU(3) x SU(2) x U(1) / Z_6 and associated generic matter. The
concept of 'generic matter' can be rigorously defined in...
This talk will give a brief overview focused on six papers
written by D. Gaiotto, G. Moore, and A. Neitzke
loosely centered around the topics mentioned in the title. The
papers are on the arXiv.
Background reading: Some short reviews are: https:/...
The center of the Milky Way hosts the closest supermassive black
hole and nuclear star cluster to the Earth, offering us the
opportunity to study the physics of supermassive black holes and
their environment at a level of detail not possible...
We present a first-principles derivation of a weak-strong
duality between the four-dimensional fishnet theory in the planar
limit and a discretized string-like model living in AdS5. At strong
coupling, the dual description becomes classical and we...
