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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C14020 - Renormalization Group Approaches to Quantum GravityPODCAST Subscribe to podcast

Renormalization Group Approaches to Quantum Gravity Conference - Apr. 22-25th

Organizer(s):

Collection URL: http://pirsa.org/C14020


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PIRSA:14040085  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Recent developments in asymptotic safety: tests and properties
Speaker(s): Tim Morris
Abstract: The talk will review recent tests of the asymptotic safety conjecture within functional renormalisation group studies and progress in understanding the properties that such a fixed point would have.
Date: 22/04/2014 - 9:10 am

PIRSA:14040086  ( MP4 Medium Res , MP3 , PDF ) Which Format?
What you always wanted to know about CDT, but did not have time to read about in our papers
Speaker(s): Renate Loll
Abstract: I will review the approach of Causal Dynamical Triangulations to nonperturbative quantum gravity, high-lighting some frequently mis- or ununderstood features, emphasizing recent developments and discussing some interesting open issues.
Date: 22/04/2014 - 10:10 am

PIRSA:14040087  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Tensor models in the large N limit
Speaker(s): Razvan Gurau
Abstract: Tensor models generalize matrix models and provide a framework for the study of random geometries in arbitrary dimensions. Like matrix models they support a 1/N expansion, where N is the size of the tensor, with an analytically controlled large N limit. In this talk I will present some recent result... read more
Date: 22/04/2014 - 11:50 am

PIRSA:14040088  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Renormalization of group field theories: motivations and a brief review
Speaker(s): Daniele Oriti
Abstract: Group field theories are tensorial models enriched with group-theoretic data in order to define proper field theories of quantum geometry. They can be understood as a second quantised (Fock space) reformulation of loop quantum gravity kinematics and dynamics. The renormalization group provides, as a... read more
Date: 22/04/2014 - 2:30 pm

PIRSA:14040089  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum Spacetime Engineering
Speaker(s): Bianca Dittrich
Abstract: Given (a set of) fundamental models of quantum space time, for instance spin foam models, we aim to understand the large scale physics encoded in these fundamental models. Renormalization and coarse graining address this issue and help to understand how large scale physics depends on parameters in t... read more
Date: 22/04/2014 - 3:20 pm

PIRSA:14040090  ( MP4 Medium Res , MP3 , PDF ) Which Format?
What are the most pressing open questions in the application of the RG to gravity?
Abstract:
Date: 22/04/2014 - 4:50 pm

PIRSA:14040091  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Perturbative quantum gravity calculations and running couplings
Speaker(s): John Donoghue
Abstract: We know how to make perturbative calculations in quantum gravity using the framework of effective field theory. I will describe the basics of the effective field theory treatment and look at several calculations. There are obstacles to describing these with running coupling constants. Finally, I wil... read more
Date: 23/04/2014 - 9:00 am

PIRSA:14040092  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Lessons from asymptotic safety
Speaker(s): Daniel Litim
Abstract: Two aspects of asymptotic safety are highlighted. First, I discuss how asymptotic safety can be tested with the help of a bootstrap strategy. This is then applied to high-order polynomial actions of the Ricci scalar and beyond. Second, I discuss how phenomenological signatures of asymptotic safety c... read more
Date: 23/04/2014 - 9:40 am

PIRSA:14040093  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Confronting Asymptotically Safe Inflation with Planck data
Speaker(s): Alfio Bonanno
Abstract:
Date: 23/04/2014 - 11:00 am

PIRSA:14040094  ( MP4 Medium Res , MP3 , PDF ) Which Format?
What happens to the Schwarzschild solution in quantum corrected gravity?
Speaker(s): Kellogg Stelle
Abstract:
Date: 23/04/2014 - 11:40 am

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