Could quantum circuit complexity have physical ramifications? In
the context of AdS/CFT, Susskind has suggested that it might, as
circuit complexity could be the CFT dual to AdS wormhole volume.
Here we explore this proposal using cryptographic...
I will discuss real-time path integrals in gravitational
theories. As applications we will describe the general structure of
replica wormhole saddles and the effective dynamics of open quantum
systems with long-term memory.
In recent work, it was argued that quantum computations with
inputs and outputs distributed in spacetime, or quantum tasks,
impose constraints on entanglement in holographic theories. The
resulting constraint was named the connected wedge theorem...
I will discuss progress towards understanding the relationship
between the gravitational path integral and the partition function
via the gravitational free energy (more generally the generating
functional). A proper computation of the free energy...
NASA's Kepler mission conducted a large survey of planetary
systems. Recently, we have advanced from measuring occurrence
rates as a function of planet size and period to characterizing the
intrinsic distribution of planetary system
architectures. ...
The physics of astrophysical coronal heating and the origin of the
slow solar wind remain compelling problems in heliospheric physics,
and plasma astrophysics more generally. The NASA Parker Solar Probe
mission was launched in late 2018 and has...
Galaxy clusters and cosmic filaments are the largest structures
in the Universe. During mergers between clusters shocks and
turbulence are driven in the intra-cluster-medium (ICM) and
dissipate a fraction of their energy into particle
acceleration...
Earth-based radar observations in 2006–2019 enable the first
measurement of the spin precession rate and moment of inertia of
Venus. The observations also show that the spin period of the solid
planet changes by tens of minutes. The length-of-day...
