The CTP Lunch Club meets at 12noon in the CTP Cosman seminar room every Friday (provided that there are sufficient speakers). A light lunch will be provided (usually pizza, however some other options may be explored).
The seminars are designed for graduate students and should be accessible to all students. First year students are particularly encouraged to attend so that they may learn about research being performed in the CTP.
Email notification of the club will be sent to the ctp-all, ctp-postdocs and ctp-students email lists as appropriate. If you wish to speak, or have suggestions about speakers and/or possible workshop topics, please contact the organizers: Patrick Oare and Wenzer Qin.
Deep Neural Networks and why Physicists should look into them
Recent work in the application of Deep Neural Nets (NN) to physical systems has opened up a new frontier in computational physics. In particular, work by Mattheakis et. al (arxiv:2001.11107) transformed a NN architecture into the role of a solver, producing high accuracy, infinite resolution predictions for evolution of Hamiltonian dynamical systems within some pre-selected temporal domain. We present a series of strategies to amplify the spatio-temporal domain within which such NN differential equation solvers may operate, while providing techniques to predict and refine the errors in their predictions. We generalize the applicability of such NN solvers to beyond Hamiltonian systems, while doing so in a way that can still take advantage of the inherent symmetries and known information (like initial/boundary conditions) about the system, helping us speed up the prediction process. Lastly, we describe how such solvers are the natural choice in multi-dimensional phase space mapping, pointing out where these NN solvers have an advantage over standard numerical solvers
Holographic glimpses of the local structure of spacetime
The AdS/CFT duality taught us how to describe quantum gravity in asymptotically Anti-de Sitter Universes: Via certain special Conformal Field Theories, "living" on their asymptotic boundaries. An important outstanding problem is how to recover the local structure of spacetime from properties of this boundary CFT. How is the local Poincare symmetry and the curvature of the Universe reflected on the dual quantum description? I will explain how two fundamental properties of entanglement in Quantum Field Theories, the modular chaos bound and the modular Berry curvature, outline an answer to these questions.
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