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String Theory Journal Club
Bulk local state reconstruction in flat spacetime holography and Carrollian conformal field theories
Bulk local state reconstruction in flat spacetime holography and Carrollian conformal field theories
Organizers
Speaker
Pengxiang Hao
Time
Tuesday, September 2, 2025 2:00 PM - 4:00 PM
Venue
A3-2-303
Online
Zoom 293 812 9202
(BIMSA)
Abstract
We investigate the reconstruction of bulk local states in flat spacetime using states from Carrollian conformal field theories (CCFTs), which are proposed as the dual field theories in one dimension lower for flat holography. For scalar-type massive excitations in the bulk, the reconstruction can be achieved through states in what is known as the induced representation. In this scenario, we observe a match between the Hilbert spaces of the bulk and the boundary. Additionally, the bulk flat correlation functions can be reproduced using the induced states in the boundary field theories. In this talk, I will briefly review the flat spacetime holography and Carrollian conformal field theories and then go to the bulk reconstruction.
Speaker Intro
Peng-Xiang Hao obtained his Ph.D. from the School of Physics at Peking University in 2020. He then conducted postdoctoral research at the Yau Mathematical Sciences Center, Tsinghua University and the Yukawa Institute for Theoretical Physics, Kyoto University. His main research interests include flat spacetime holography, Carrollian conformal field theory, EOW brane and Boundary CFTs.