[NTU String Seminar] Emergent Spacetime and Early Universe Cosmology from the BFSS Matrix Model: Progress and Problems

• Event Date: 2025-12-26
• Chen, Jhan Yu 陳詹喻
• High Energy Physics and Astrophysics High energy theory
• Speaker: Robert Brandenberger (McGill University)  /  Host: Prof. Pei-Ming Ho
  Place: Rm. 815, Dept. of Physics, NTU

Title: [NTU String Seminar] Emergent Spacetime and Early Universe Cosmology from the BFSS Matrix Model: Progress and Problems
Speaker: Robert Brandenberger (McGill University)​​​​​​​
Time: 2025/12/26 (Fri.) 14:30
Place: Rm. 815, Dept. of Physics, NTU
 

Abstract

Starting from the BFSS matrix model in a finite temperature state, I will discuss a proposal to obtain an emergent spacetime and early universe cosmology. In the large N limit, the emergent spacetime is infinite and continuous, and spatially flat. I will discuss a physical mechanism which generates a SO(9) --> SO(6) x SO(3) symmetry breaking and leads to a classical expanding three dimensional space. Thermal fluctuations in this space lead to roughly scale-invariant spectra of cosmological perturbations and gravitational waves, in analogy to what happens in String Gas Cosmology. I will focus on progress and problems in this research program.