Sunday 9 August 2020 |

Events for day: Thursday 23 July 2020 |

09:30 - 10:30 IPM holography virtual seminarOn the flow of states under TTbar School PARTICLES AND ACCELERATORS Abstract: We study the TTbar deformation of two dimensional quantum field theories from a Hamiltonian point of view, focusing on aspects of the theory in Lorentzian signature. Our starting point is a simple rewriting of the spatial integral of the TTbar operator, which directly implies the deformed energy spectrum of the theory. Using this rewriting, we then derive flow equations for various quantities in the deformed theory, such as energy eigenstates, operators, and correlation functions. On the plane, we find that the deformation merely has the effect of implementing successive canonical/Bogoliubov transformations along the flow. This lea ... 15:00 - 17:00 Weekly SeminarFoundations of Physics Group The quest for a fundamental theory, Quantum Gravity or Multiverse? School PHYSICS Abstract: In this talk, I will discuss relations between some philosophical issues when asking about the meaning of the laws of physics at the most fundamental level and some current foundational problems in quantum gravity research and also problems in foundations of quantum physics. As an example, I will discuss the "universality" of the laws and how ambiguities of this notion at the fundamental level lead to the natural appearance of "multiversality". ... |