Conference

Displaying 2833 - 2844 of 4904

Renormalization - 3
- Tobias Henz
  Universität Heidelberg - Institut für Theoretische Physik
- Kevin Falls
  University of Sussex
- Mohamed Anber
  Canadian Institute for Theoretical Astrophysics (CITA)
July 26, 2013

PIRSA:13070089
Canonical Quantum Gravity and Spin Foams
- Antonia Zipfel
- Mingyi Zhang
  Aix-Marseille University
- Atousa Chaharsough Shirazi
- Fabio Anza
  Università di Pisa
- Aristide Baratin
  SAIT AI Lab Montreal
July 26, 2013

PIRSA:13070086
Discrete Approaches and Mixed Session
- Goffredo Chirco
  Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI)
- Eugene Kur
  University of California, Berkeley
- Christopher Duston
  Florida State University
- Johannes Thuerigen
  University of Münster
- Bianca Dittrich
  Perimeter Institute for Theoretical Physics
July 26, 2013

PIRSA:13070085
Quantum Foundations - 1
- Lee Smolin
  Perimeter Institute for Theoretical Physics
- Robert Spekkens
  Perimeter Institute for Theoretical Physics
- Robert Oeckl
  Universidad Nacional Autónoma De Mexico (UNAM)
- Jonathan Oppenheim
  University College London
- Markus Müller
  Institute for Quantum Optics and Quantum Information (IQOQI) - Vienna
July 26, 2013

PIRSA:13070084
Quantum Cosmology - 4
- Daniel Martin de Blas
  Universidade Federal do Espírito Santo
- Adriano Contillo
  Radboud Universiteit Nijmegen
- Marcin Kisielowski
  University of Warsaw
- Eduardo Martin-Martinez
  Institute for Quantum Computing (IQC)
July 26, 2013

PIRSA:13060026
Promising Paths: What Have We Learned So Far About Quantum Gravity?
- Abhay Ashtekar
  Pennsylvania State University
- Carlo Rovelli
  Aix-Marseille University
July 26, 2013

PIRSA:13070083
Scenes From Polymer Quantization

Viqar Husain
University of New Brunswick

July 26, 2013

PIRSA:13070082
Diffeomorphism Invariant Gauge Theories

Kirill Krasnov
University of Nottingham

July 26, 2013

PIRSA:13070081
Spontaneous Dimensional Reduction?

Steve Carlip
University of California, Davis

July 26, 2013

PIRSA:13070070
Closing Remarks

July 25, 2013

PIRSA:13070094
Group Field Theory and Tensor Models - 2
- Stephane Dartois
  École Normale Supérieure de Lyon (ENS Lyon)
- Lorenzo Sindoni
  Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI)
- Joseph Ben Geloun
  Laboratoire d'Informatique de Paris-Nord (LIPN)
- Dine Ousmane Samary
  CEA Saclay
July 25, 2013

PIRSA:13070076
Phenomenology - 4
- Stefano Bianco
  Sapienza University of Rome
- Giovanni Amelino-Camelia
  Sapienza Università di Roma - Dipartimento di Fisica
- Angel Ballesteros
  Universidad de Burgos
- Hans Westman
July 25, 2013

PIRSA:13070077

Renormalization - 3
- Tobias Henz
  Universität Heidelberg - Institut für Theoretische Physik
- Kevin Falls
  University of Sussex
- Mohamed Anber
  Canadian Institute for Theoretical Astrophysics (CITA)
July 26, 2013

PIRSA:13070089
Canonical Quantum Gravity and Spin Foams
- Antonia Zipfel
- Mingyi Zhang
  Aix-Marseille University
- Atousa Chaharsough Shirazi
- Fabio Anza
  Università di Pisa
- Aristide Baratin
  SAIT AI Lab Montreal
July 26, 2013

PIRSA:13070086
Discrete Approaches and Mixed Session
- Goffredo Chirco
  Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI)
- Eugene Kur
  University of California, Berkeley
- Christopher Duston
  Florida State University
- Johannes Thuerigen
  University of Münster
- Bianca Dittrich
  Perimeter Institute for Theoretical Physics
July 26, 2013

PIRSA:13070085
Quantum Foundations - 1
- Lee Smolin
  Perimeter Institute for Theoretical Physics
- Robert Spekkens
  Perimeter Institute for Theoretical Physics
- Robert Oeckl
  Universidad Nacional Autónoma De Mexico (UNAM)
- Jonathan Oppenheim
  University College London
- Markus Müller
  Institute for Quantum Optics and Quantum Information (IQOQI) - Vienna
July 26, 2013

PIRSA:13070084
Quantum Cosmology - 4
- Daniel Martin de Blas
  Universidade Federal do Espírito Santo
- Adriano Contillo
  Radboud Universiteit Nijmegen
- Marcin Kisielowski
  University of Warsaw
- Eduardo Martin-Martinez
  Institute for Quantum Computing (IQC)
July 26, 2013

PIRSA:13060026
Promising Paths: What Have We Learned So Far About Quantum Gravity?
- Abhay Ashtekar
  Pennsylvania State University
- Carlo Rovelli
  Aix-Marseille University
July 26, 2013

PIRSA:13070083

In LQG we work in the spirit of Antonio Machado: "Traveler, there is no path; Paths are made by walking." I will present a bird's eye view of some of the paths that have emerged since Loops 11 and offer a few suggestions.

I try to make the point about what we know and what we do not yet know about the possibility of writing a quantum theory of gravity.
Scenes From Polymer Quantization

Viqar Husain
University of New Brunswick

July 26, 2013

PIRSA:13070082

A regime of "polymer quantum field theory on curved spacetime" should emerge in a low energy approximation of quantum gravity based on LQG ideas. This era should be characterized by a polymer scale, and give modifications to the usual semiclassical approximation. I will describe work on gravitational collapse, cosmology, and statistical mechanics in this setting. Results include models of horizon evaporation, inflation and graceful exit without an inflaton potential, and an indication of dimensional reduction from 4 to 2.5 dimensions.
Diffeomorphism Invariant Gauge Theories

Kirill Krasnov
University of Nottingham

July 26, 2013

PIRSA:13070081

I will describe a very large class of gauge theories that do not use any external structure such as e.g. a spacetime metric in their construction. When the gauge group is taken to be SL(2) these theories describe interacting gravitons, with GR being just a particular member of a whole family of gravity theories. Taking larger gauge groups one obtains gravity coupled to various matter systems. In particular, I will show how gravity together with Yang-Mills gauge fields arise from one and the same diffeomorphism invariant gauge theory Lagrangian. Finally, I will describe what is known about these theories quantum mechanically.
Spontaneous Dimensional Reduction?

Steve Carlip
University of California, Davis

July 26, 2013

PIRSA:13070070

Several lines of evidence hint that quantum gravity at distances a bit larger than the Planck scale may become effectively two-dimensional. I will summarize the evidence for this "spontaneous dimensional reduction," and suggest a further argument based on the effect of vacuum fluctuations on light cones. If this description proves to be correct, it suggests an interesting relationship between small-scale quantum spacetime and the behavior of cosmologies near a spacelike singularity.
Closing Remarks

July 25, 2013

PIRSA:13070094
Group Field Theory and Tensor Models - 2
- Stephane Dartois
  École Normale Supérieure de Lyon (ENS Lyon)
- Lorenzo Sindoni
  Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI)
- Joseph Ben Geloun
  Laboratoire d'Informatique de Paris-Nord (LIPN)
- Dine Ousmane Samary
  CEA Saclay
July 25, 2013

PIRSA:13070076
Phenomenology - 4
- Stefano Bianco
  Sapienza University of Rome
- Giovanni Amelino-Camelia
  Sapienza Università di Roma - Dipartimento di Fisica
- Angel Ballesteros
  Universidad de Burgos
- Hans Westman
July 25, 2013

PIRSA:13070077

Title	Speaker(s)	Date	Talk Type	Info link
Renormalization - 3	Tobias Henz, Kevin Falls, Mohamed Anber	2013-07-26	Conference	View details
Canonical Quantum Gravity and Spin Foams	Antonia Zipfel, Mingyi Zhang, Atousa Chaharsough Shirazi, Fabio Anza, Aristide Baratin	2013-07-26	Conference	View details
Discrete Approaches and Mixed Session	Goffredo Chirco, Eugene Kur, Christopher Duston, Johannes Thuerigen, Bianca Dittrich	2013-07-26	Conference	View details
Quantum Foundations - 1	Lee Smolin, Robert Spekkens, Robert Oeckl, Jonathan Oppenheim, Markus Müller	2013-07-26	Conference	View details
Quantum Cosmology - 4	Daniel Martin de Blas, Adriano Contillo, Marcin Kisielowski, Eduardo Martin-Martinez	2013-07-26	Conference	View details
Promising Paths: What Have We Learned So Far About Quantum Gravity?	Abhay Ashtekar, Carlo Rovelli	2013-07-26	Conference	View details
Scenes From Polymer Quantization	Viqar Husain	2013-07-26	Conference	View details
Diffeomorphism Invariant Gauge Theories	Kirill Krasnov	2013-07-26	Conference	View details
Spontaneous Dimensional Reduction?	Steve Carlip	2013-07-26	Conference	View details
Closing Remarks		2013-07-25	Conference	View details
Group Field Theory and Tensor Models - 2	Stephane Dartois, Lorenzo Sindoni, Joseph Ben Geloun, Dine Ousmane Samary	2013-07-25	Conference	View details
Phenomenology - 4	Stefano Bianco, Giovanni Amelino-Camelia, Angel Ballesteros, Hans Westman	2013-07-25	Conference	View details

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