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# Documents  Vidotto, Francesca | enregistrements trouvés : 6

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## Twistor theory for LQG Eastwood, Michael | CIRM H

Post-edited

Research talks

Twistor Theory was proposed in the late 1960s by Roger Penrose as a potential geometric unification of general relativity and quantum mechanics. During the past 50 years, there have been many mathematical advances and achievements in twistor theory. In physics, however, there are aspirations yet to be realised. Twistor Theory and Loop Quantum Gravity (LQG) share a common background. Their aims are very much related. Is there more to it? This talk will sketch the geometry and symmetry behind twistor theory with the hope that links with LQG can be usefully strengthened. We believe there is something significant going on here: what could it be? Twistor Theory was proposed in the late 1960s by Roger Penrose as a potential geometric unification of general relativity and quantum mechanics. During the past 50 years, there have been many mathematical advances and achievements in twistor theory. In physics, however, there are aspirations yet to be realised. Twistor Theory and Loop Quantum Gravity (LQG) share a common background. Their aims are very much related. Is there more to it? This ...

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## Skyrme fields, multi-instantons and the $SU(\infty )$-Toda equation Plansangkate, Prim | CIRM H

Multi angle

Research talks

We construct Skyrme fields from holonomy of the spin connection of multi-Taub-NUT instantons with the centres positioned along a line in R3. The domain of our Skyrme fields is the space of orbits of the axial symmetry of the multi-Taub-NUT instantons. We obtain an expression for the induced Einstein-Weyl metric on the space and its associated solution to the $SU(\infty )$-Toda equation.

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## The palatial twistor approach to Einstein lambda vacuums Penrose, Roger | CIRM H

Multi angle

Research talks

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## The quantum states and operators of the canonical LQG Lewandowski, Jerzy | CIRM H

Multi angle

Research talks

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## Twist and loop Rovelli, Carlo | CIRM H

Multi angle

Research talks

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## Covariant loop quantum gravity:an elementary introduction to quantum gravity and spinfoam theory Rovelli, Carlo ; Vidotto, Francesca | Cambridge University Press 2015

Ouvrage

- xii; 254 p.
ISBN 978-1-107-06962-6

Localisation : Ouvrage RdC (ROVE)

gravité quantique # théorie des boucles # thermodynamique des trous noirs # théorie de jauge # formalisme de tétrade # action de Holst # calcul de Regge # variable de Ashtekar # formalisme ADM # amplitude de Ponzano-Regge # amplitude de Turaev-Viro # état cohérent # couplage de matière # propagateur du graviton # mousse de spin

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