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Petz map and Python’s lunch
We look at the interior operator reconstruction from the point of view of Petz map and study its complexity. We show that Petz maps can be written as precursors under...
Apr 14, 2020
Dark Matter: A Cosmological Perspective
While it is considered to be one of the most promising hints of new physics beyond the Standard Model, dark matter is as-yet known only through its gravitational influence on...
Apr 15, 2020
Covariant Loop Quantum Gravity, the State of the Art
The covariant (spinfoam) formulation of loop gravity is a tentative physical quantum theory of gravity with well defined transition amplitudes. I give my current understanding of the state of the...
Apr 16, 2020
A quantum circuit interpretation of evaporating black hole geometry
When Alice shares thermofield double with Bob, her time evolution can make the wormhole grow. We identify different kinds of operations Alice can do as being responsible for the growth...
Apr 21, 2020
Making Quantum Matter from Light
In this talk I will discuss ongoing efforts at UChicago to explore matter made of light. I will begin with a broad introduction to the challenges associated with making matter...
Apr 21, 2020
2D Holography beyond JT
Dilaton-gravity models are integrable in two dimensions and admit a holographic description. In this talk, the holographic description of the Dilaton-gravity in flat spacetime is discussed. Using the gauge theory...
Dec 08, 2020
Testing the standard cosmological model with the Dark Energy Survey
The Dark Energy Survey (DES) is a photometric galaxy survey which, using measurements of distortions to galaxy shapes from weak gravitational lensing and other observables, we can use to test...
Dec 08, 2020
Efficient Data Compression and Causal Order Discovery for Multipartite Quantum Systems
In this talk, I will discuss two problems: quantum data compression and quantum causal order discovery, both for multipartite quantum systems. For data compression, we model finitely correlated states as...
Dec 09, 2020
A polarimetric view of black hole accretion flows and jets
The Event Horizon Telescope is a global effort to construct an Earth-sized virtual radio telescope array, with the goal to make pictures and movies of two nearby supermassive black holes...
Dec 09, 2020
Symmetries, graph properties, and quantum speedups
Aaronson and Ambainis (2009) and Chailloux (2018) showed that fully symmetric (partial) functions do not admit exponential quantum query speedups. This raises a natural question: how symmetric must a function...
Dec 09, 2020