There are no events at the Simons Center today. Here are the events for this week
Monday, November 3rd, 2025
Workshop: Sameer Murthy
Time: 9:30 AM - 10:00 AM
Location: SCGP 102
Title: TBA
Speaker: Sameer Murthy
Abstract: TBA
Title: TBA
Speaker: Sameer Murthy
Abstract: TBA
Workshop: Lia Medeiros
Time: 10:00 AM - 10:30 AM
Location: SCGP 102
Title: TBA
Speaker: Lia Medeiros
Abstract: TBA
Title: TBA
Speaker: Lia Medeiros
Abstract: TBA
Workshop: Tom Giblin
Time: 11:00 AM - 11:30 AM
Location: SCGP 102
Title: TBA
Speaker: Tom Giblin
Abstract: TBA
Title: TBA
Speaker: Tom Giblin
Abstract: TBA
Workshop: Naritaka Oshita
Time: 11:30 AM - 12:00 PM
Location: SCGP 102
Title: Ringing of black holes: Probing near-horizon physics
Speaker: Naritaka Oshita
Abstract: Understanding and testing the structure of spacetime in the vicinity of a black hole is crucial for addressing the black hole information problem. The ringdown gravitational waves emitted after a black hole merger are typically modeled as a superposition of quasinormal modes (QNMs), which encode the dissipative dynamics associated with the excitation of the light-ring structure. A natural question then arises: can we use these signals to probe other aspects of black hole physics and geometry—such as the ergosphere, greybody factors, or near-horizon structure—beyond the light ring? In this talk, I will discuss how ringdown and echo signals can serve as powerful probes to explore the deep structure of black hole spacetimes and to test near-horizon physics.
Title: Ringing of black holes: Probing near-horizon physics
Speaker: Naritaka Oshita
Abstract: Understanding and testing the structure of spacetime in the vicinity of a black hole is crucial for addressing the black hole information problem. The ringdown gravitational waves emitted after a black hole merger are typically modeled as a superposition of quasinormal modes (QNMs), which encode the dissipative dynamics associated with the excitation of the light-ring structure. A natural question then arises: can we use these signals to probe other aspects of black hole physics and geometry—such as the ergosphere, greybody factors, or near-horizon structure—beyond the light ring? In this talk, I will discuss how ringdown and echo signals can serve as powerful probes to explore the deep structure of black hole spacetimes and to test near-horizon physics.
Workshop: Steve Giddings
Time: 2:30 PM - 3:00 PM
Location: SCGP 102
Title: Comments on the information problem
Speaker: Steve Giddings
Abstract: I will comment on our approaches to the information problem, in the hopes of stimulating further discussion and progress towards more common understanding.
Title: Comments on the information problem
Speaker: Steve Giddings
Abstract: I will comment on our approaches to the information problem, in the hopes of stimulating further discussion and progress towards more common understanding.
Workshop: Tanmay Vachaspati
Time: 3:00 PM - 3:30 PM
Location: SCGP 102
Title: TBA
Speaker: Tanmay Vachaspati
Abstract: TBA
Title: TBA
Speaker: Tanmay Vachaspati
Abstract: TBA
Workshop: Avery Broderick
Time: 4:00 PM - 4:30 PM
Location: SCGP 102
Title: TBA
Speaker: Avery Broderick
Abstract: TBA
Title: TBA
Speaker: Avery Broderick
Abstract: TBA
Tuesday, November 4th, 2025
Workshop: Abhay Ashtekar
Time: 9:30 AM - 10:00 AM
Location: SCGP 102
Title: TBA
Speaker: Abhay Ashtekar
Abstract: TBA
Title: TBA
Speaker: Abhay Ashtekar
Abstract: TBA
Workshop: Antal Jevicki
Time: 10:00 AM - 10:30 AM
Location: SCGP 102
Title: Emergent Hilbert Space in Collective Theories
Speaker: Antal Jevicki
Abstract: We discuss the emergent,finite N Hilbert space of collective theories. Imposition of trace relations results in drastic reduction to: invariants of primary and secondary kind (a Hironaka decomposition). The former are in accordance with perturbative states ,while the later play a role at higher temperature, their number growing exponentially in powers of N.
Title: Emergent Hilbert Space in Collective Theories
Speaker: Antal Jevicki
Abstract: We discuss the emergent,finite N Hilbert space of collective theories. Imposition of trace relations results in drastic reduction to: invariants of primary and secondary kind (a Hironaka decomposition). The former are in accordance with perturbative states ,while the later play a role at higher temperature, their number growing exponentially in powers of N.
Workshop: Clifford Johnson
Time: 11:00 AM - 11:30 AM
Location: SCGP 102
Title: TBA
Speaker: Clifford Johnson
Abstract: TBA
Title: TBA
Speaker: Clifford Johnson
Abstract: TBA
Workshop: Clifford Johnson
Time: 11:00 AM - 11:30 AM
Location: SCGP 102
Title: TBA
Speaker: Clifford Johnson
Abstract: TBA
Title: TBA
Speaker: Clifford Johnson
Abstract: TBA
Workshop: Nima Lashkari
Time: 11:30 AM - 12:00 PM
Location: SCGP 102
Title: TBA
Speaker: Nima Lashkari
Abstract: TBA
Title: TBA
Speaker: Nima Lashkari
Abstract: TBA
Workshop: Pablo Pani
Time: 2:30 PM - 3:00 PM
Location: SCGP 102
Title: TBA
Speaker: Pablo Pani
Abstract: TBA
Title: TBA
Speaker: Pablo Pani
Abstract: TBA
Wednesday, November 5th, 2025
Workshop: Oleg Lunin
Time: 9:30 AM - 10:00 AM
Location: SCGP 102
Title: TBA
Speaker: Oleg Lunin
Abstract: TBA
Title: TBA
Speaker: Oleg Lunin
Abstract: TBA
Workshop: Ji Hoon Lee
Time: 10:00 AM - 10:30 AM
Location: SCGP 102
Title: TBA
Speaker: Ji Hoon Lee
Abstract: TBA
Title: TBA
Speaker: Ji Hoon Lee
Abstract: TBA
Workshop: Emil Martinec
Time: 11:00 AM - 11:30 AM
Location: SCGP 102
Title: TBA
Speaker: Emil Martinec
Abstract: TBA
Title: TBA
Speaker: Emil Martinec
Abstract: TBA
Workshop: Samir Mathur
Time: 11:30 AM - 12:00 PM
Location: SCGP 102
Title: TBA
Speaker: Samir Mathur
Abstract: TBA
Title: TBA
Speaker: Samir Mathur
Abstract: TBA
Workshop: Don Marolf
Time: 2:30 PM - 3:30 PM
Location: SCGP 102/ZOOM
Title: TBA
Speaker: Don Marolf
Abstract: TBA
Title: TBA
Speaker: Don Marolf
Abstract: TBA
Workshop: David Turton
Time: 4:00 PM - 4:30 PM
Location: SCGP 102
Title: TBA
Speaker: David Turton
Abstract: TBA
Title: TBA
Speaker: David Turton
Abstract: TBA
Thursday, November 6th, 2025
Workshop: Pierre Heidmann
Time: 9:30 AM - 10:00 AM
Location: SCGP 102
Title: TBA
Speaker: Â Pierre Heidmann
Abstract: TBA
Title: TBA
Speaker: Â Pierre Heidmann
Abstract: TBA
Workshop: Mirjam Cvetic
Time: 11:00 AM - 11:30 AM
Location: SCGP 102
Title: TBA
Speaker: Mirjam Cvetic
Abstract: TBA
Title: TBA
Speaker: Mirjam Cvetic
Abstract: TBA
Workshop: Roberto Emparan
Time: 11:30 AM - 12:00 PM
Location: SCGP 102
Title: TBA
Speaker: Roberto Emparan
Abstract: TBA
Title: TBA
Speaker: Roberto Emparan
Abstract: TBA
Workshop: Ramy Brustein
Time: 2:30 PM - 3:00 PM
Location: SCGP 102
Title: TBA
Speaker: Ramy Brustein
Abstract: TBA
Title: TBA
Speaker: Ramy Brustein
Abstract: TBA
Workshop: Kostas Skenderis
Time: 3:00 PM - 3:30 PM
Location: SCGP 102
Title: TBA
Speaker: Kostas Skenderis
Abstract: TBA
Title: TBA
Speaker: Kostas Skenderis
Abstract: TBA
Friday, November 7th, 2025
Workshop: Zhiwei Wang
Time: 9:30 AM - 10:00 AM
Location: SCGP 102
Title: TBA
Speaker: Zhiwei Wang
Abstract: TBA
Title: TBA
Speaker: Zhiwei Wang
Abstract: TBA
Workshop: Daniel Harlow
Time: 10:00 AM - 10:30 AM
Location: SCGP 102
Title: TBA
Speaker: Daniel Harlow
Abstract: TBA
Title: TBA
Speaker: Daniel Harlow
Abstract: TBA