Format results
-
Infinite derivative gravity theories: UV completion, inflation and observables
Alexey Koshelev - ShanghaiTech University
-
Carrollian amplitudes and their role in flat space holography
Romain Ruzziconi - University of Oxford
-
Quantum Gravity Seminar - TBA - VIRTUAL
Jan Pawlowski - Universität Heidelberg - Institut für Theoretische Physik
-
Extended Phase Space: Constraints, Charges and Conditional Expectations
Rob Leigh - University of Illinois Urbana-Champaign
-
Asymptotically safe quantum gravity on foliated spacetimes - VIRTUAL
Frank Saueressig - Radboud Universiteit Nijmegen
-
Effective metrics from group field theory
Lisa Mickel - University of Sheffield
-
Continuum Relational Physics in Group Field Theories and Applications to Cosmology
Luca Marchetti - Okinawa Institute of Science and Technology Graduate University
-
-
Quantum Analysis of the Bianchi IX model: Exploring Chaos
Sara Fernandez Uria - University of the Basque Country
-
Quantizing non-linear phase spaces, causal diamonds and the Casimir matching principle
Rodrigo Andrade E Silva - Perimeter Institute for Theoretical Physics
-
Generalized LTB spacetime and dust collapse in polymerized spherical symmetric models
Hongguang Liu - University of Erlangen-Nuremberg
-
The light cone bundle and its ultrarelativistic gauge symmetries
Daniel Weiss - Leibniz University Hannover
-
Infinite derivative gravity theories: UV completion, inflation and observables
Alexey Koshelev - ShanghaiTech University
In my talk I will review motivation for and construction of an infinite derivative gravity. Especially a connection to the string field theory will be highlighted. Then I will demonstrate an exact embedding of the Starobinsky inflation in this construction. In final part I will speak about… -
Carrollian amplitudes and their role in flat space holography
Romain Ruzziconi - University of Oxford
Carrollian holography aims to express gravity in asymptotically flat space-time in terms of a dual Carrollian CFT living at null infinity. In this talk, I will review some aspects of Carrollian holography and argue that this approach is naturally related to the AdS/CFT correspondence via a flat… -
Quantum Gravity Seminar - TBA - VIRTUAL
Jan Pawlowski - Universität Heidelberg - Institut für Theoretische Physik
Abstract TBA --- Zoom link -
Extended Phase Space: Constraints, Charges and Conditional Expectations
Rob Leigh - University of Illinois Urbana-Champaign
I’ll give a review of extended phase space in gauge theories and/or diffeomorphism-invariant theories, beginning with its original conception up to our most recent work. The primary focus in a classical theory is on the proper representation of symmetries and gauge symmetries on phase space… -
Asymptotically safe quantum gravity on foliated spacetimes - VIRTUAL
Frank Saueressig - Radboud Universiteit Nijmegen
Incorporating time poses a challenge for all quantum gravity programs primarily build around Euclidean spacetimes. This talk surveys how the gravitational asymptotic safety program may address this challenge by encoding the gravitational degrees of freedom via the Arnowitt-Deser-Misner (ADM)… -
Effective metrics from group field theory
Lisa Mickel - University of Sheffield
Group field theory (GFT) is a background independent approach to quantum gravity in which the quanta represent "building blocks of space". It has been successfully applied to the cosmological setting and shown to have the potential for rich phenomenology. In this talk we will explore a novel… -
Continuum Relational Physics in Group Field Theories and Applications to Cosmology
Luca Marchetti - Okinawa Institute of Science and Technology Graduate University
It is a general expectation in several approaches to quantum gravity that continuum physics emerges as a macroscopic phenomenon from the collective behavior of fundamental quantum gravity degrees of freedom. However, a physical understanding of this emergence process requires us to address deeply… -
A Two-Part Exploration: A Foundational Topic + an Applicational Topic in the Context of Loop Quantum Gravity
Sepideh Bakhoda - Beijing Normal University
In this presentation, I will discuss two distinct topics, one relating to the foundational aspects of LQG and the other concerning its applicational implications. Firstly, I will explore the U(1)^3 model of Euclidean Quantum Gravity, which serves as an interesting testing ground for the dynamics… -
Quantum Analysis of the Bianchi IX model: Exploring Chaos
Sara Fernandez Uria - University of the Basque Country
According to the Belinski-Khalatnikov-Lifshitz conjecture, the Bianchi IX spacetime describes the evolution of each spatial point close to a generic spacelike singularity. However, near the singularity, quantum effects are expected to be relevant. Therefore, in this work a quantum analysis of the… -
Quantizing non-linear phase spaces, causal diamonds and the Casimir matching principle
Rodrigo Andrade E Silva - Perimeter Institute for Theoretical Physics
In the quest to understand the fundamental structure of spacetime (and subsystems) in quantum gravity, it may be worth exploring the ultimate consequences of non-perturbative canonical quantization, carefully taking into account the constraints and gauge invariance of general relativity. As the… -
Generalized LTB spacetime and dust collapse in polymerized spherical symmetric models
Hongguang Liu - University of Erlangen-Nuremberg
Recently, models with different properties have been proposed for polymerized dust collapse and regular black holes. To fully understand their properties and differences, we provide a systematic procedure to construct effective polymerized spherically symmetric models encoding holonomy corrections… -
The light cone bundle and its ultrarelativistic gauge symmetries
Daniel Weiss - Leibniz University Hannover
Abstract TBA --- Zoom link https://pitp.zoom.us/j/92901106970?pwd=SEdZajRQYWlrQzJhRnM0WnRpeHVNdz09