Physics

Abstract: I will discuss the reasoning behind the suggested connection between double-scaled SYK (DSSYK) and de Sitter space. We will mention the general form of the correspondence as well as the mapping of parameters between the two sides. On the...

Abstract: Recently, I have been trying to understand how large language models (LLMs) work, what their basic building blocks are and how they are trained. In this talk I want to share some of my understanding with you by discussing the so-called...

Abstract: Tidal deformation is a significant phenomenon observed in various astronomical scenarios, including black holes, and are a key gravitational-wave observable encoding information about the object's interior. Relying on hidden symmetries...

Abstract: I will present the problem of building local AdS bulk observables from boundary CFT data. Focusing on QFTs coupled to a rigid AdS background, we study the analyticity constraints that bulk locality imposes on bulk-boundary-boundary 3-point...

Abstract: In this talk, I will first review the proposal by Daniel Jafferis and Lampros Lamprou about the reconstruction of a bulk infalling observer in terms of modular flow (see 2009.04476), and then apply this proposal to SYK model in thermofield...

Abstract: I will consider the quantum fields along an observer's worldline to define a background independent algebra in quantum gravity.   The talk is based on a paper with the same title (arXiv:2308.03663).

Abstract: Introduced in the mid-50s, crossing symmetry in interacting quantum field theory suggests that particles and anti-particles traveling back in time are indistinguishable. This perspective has significant practical implications for...

Abstract: Instantons are an important source of nonperturbative effects in quantum field theories, but their role in asymptotically free theories has not been well understood. In this talk, we will present a new approach to instanton analysis in the...

Abstract: I will address the question of: what are the mathematical/functional forms of predictions made using perturbative QFT? Beyond one loop, very little about this question has been known until quite recently, in part due to the appearance of...