Slides from March 2010 QG school

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SUMMARY

The March 2010 QG school held in Zakopane featured significant contributions from leading researchers in Loop Quantum Gravity (LQG) and Spin Foam (SF) models. Key presentations included Thomas Thiemann's insights on LQG dynamics and Carlo Rovelli's discussion on the new dynamics introduced by SF to canonical LQG. Many of the presentations, including those by Roberto Pereira and Bianca Dittrich, are available for download, providing valuable resources for further study. The event concluded with a summary by Abhay Ashtekar, highlighting future directions in quantum gravity research.

PREREQUISITES
  • Understanding of Loop Quantum Gravity (LQG)
  • Familiarity with Spin Foam (SF) models
  • Knowledge of quantum dynamics and semiclassical limits
  • Basic concepts of diffeomorphism symmetry in discrete gravity
NEXT STEPS
  • Explore the implications of Thomas Thiemann's LQG dynamics
  • Research the role of diffeomorphism symmetry in discrete gravity as discussed by Bianca Dittrich
  • Investigate the continuum approximation of microscopic quantum dynamics presented by Lorenzo Sindoni
  • Study the relationship between Loop Quantum Cosmology (LQC) and LQG as explained by Adam Henderson
USEFUL FOR

Researchers, physicists, and students interested in quantum gravity, particularly those focusing on Loop Quantum Gravity and Spin Foam models, will benefit from this discussion and the associated resources.

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http://www.fuw.edu.pl/~jpa/qgqg3/schedule.html

The school was held in the Polish ski resort Zakopane, from 28 Feb thru 4 March. Many Loop researchers gave papers and half or more of the PDF files are already on line, available to download:

SUNDAY 28 February: Spin foam models

Roberto Pereira: The new SF models
http://www.fuw.edu.pl/~jpa/qgqg3/RobertoPereira.pdf
Wojciech Kamiński: The EPRL intertwiners and correct partition function
http://www.fuw.edu.pl/~jpa/qgqg3/WojciechKaminski.pdf
Benjamin Bahr: Graph knotting in the new SF models
http://www.fuw.edu.pl/~jpa/qgqg3/BenjaminBahrsunday.pdf
Florian Conrady: SF model for general Lorentzian geometries
http://www.fuw.edu.pl/~jpa/qgqg3/FlorianConradysunday.pdf
Aristide Baratin: Group field theory in non-commutative metric variables

MONDAY 1 March: LQG dynamics

Thomas Thiemann: LQG dynamics
http://www.fuw.edu.pl/~jpa/qgqg3/ThomasThiemann.pdf
Kristina Giesel: Gravity, fields, semiclassical limit
http://www.fuw.edu.pl/~jpa/qgqg3/KristinaGiesel.pdf
Marcin Domagała: Gravity coupled to scalar field
http://www.fuw.edu.pl/~jpa/qgqg3/MarcinDomagala.pdf
Jorge Pullin: Spherically symmetric LQG
http://www.fuw.edu.pl/~jpa/qgqg3/JorgePullin.pdf
Diana Kaminski: Holonomy grupoid formulation of LQG
http://www.fuw.edu.pl/~jpa/qgqg3/DianaKaminski.pdf
Johannes Tambornino: The flux representation for LQG

TUESDAY 2 March: LQG and more

Carlo Rovelli: SF give a new dynamics to Canonical LQG
http://www.fuw.edu.pl/~jpa/qgqg3/CarloRovelli.pdf
Bianca Dittrich: Diffeomorphism symmetry and triangulation independence in discrete gravity
http://www.fuw.edu.pl/~jpa/qgqg3/BiancaDittrich.pdf
James Ryan: Phase space of discrete BF theory and LQG
Jesper Grimstrup: Coupling fermions to LQG by using the non-commutative spectral action
http://www.fuw.edu.pl/~jpa/qgqg3/JesperGrimstrup.pdf
Yongge Ma: Emergence of scalar matter from spinfoam model

WEDNESDAY 3 March: Continuum/Semiclassical Limits

Lorenzo Sindoni: Continuum approximation of microscopic quantum dynamics: lessons from condmat systems
http://www.fuw.edu.pl/~jpa/qgqg3/LorenzoSindoni.pdf
Frank Hellmann: The asymptotics of spin foam models
Etera Livine: U(N) structure of LQG states and its implications for semiclassical limit
Florian Girelli: Semi-classical spaces and spinfoams: facts and questions
Benjamin Bahr: LQG coherent states
http://www.fuw.edu.pl/~jpa/qgqg3/BenjaminBahr.pdf
Claudio Perini: Coherent loops and holomorphic foams
http://www.fuw.edu.pl/~jpa/qgqg3/ClaudioPerini.pdf

THURSDAY 4 March: LQG/SF

Lionel Mason: Twistors, amplitudes, and gravity: from twistor strings to quantum gravity?
http://www.fuw.edu.pl/~jpa/qgqg3/LionelMason.pdf
Abhay Ashtekar: Closing/summary/future directions talk
Madhavan Varadarajan: The free polymer quantum scalar field and its classical limit
http://www.fuw.edu.pl/~jpa/qgqg3/MadhavanVaradarajan.pdf
Adam Henderson: What LQC tells us about the relation between LQG and SF
Martin Bojowald: Effective dynamics
 
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