Twistor relative locality
@article{Smolin2013TwistorRL, title={Twistor relative locality}, author={Lee Smolin}, journal={arXiv: High Energy Physics - Theory}, year={2013} }
We present a version of relative locality based on the geometry of twistor space. This can also be thought of as a new kind of deformation of twistor theory based on the construction of a bundle of twistor spaces over momentum space. Locality in space-time is emergent and is deformed in a precise way when a connection on that bundle is non-flat. This gives a precise and controlled meaning to Penrose’s hypothesis that quantum gravity effects will deformtwistorspace in such a way as to maintain…
One Citation
One-dimensional action for simplicial gravity in three dimensions
- Mathematics
- 2014
This article presents a derivation of the Ponzano--Regge model from a one-dimensional spinor action. The construction starts from the first-order Palatini formalism in three dimensions. We then…
References
SHOWING 1-9 OF 9 REFERENCES
Principle of relative locality
- Physics
- 2011
We propose a deepening of the relativity principle according to which the invariant arena for nonquantum physics is a phase space rather than spacetime. Descriptions of particles propagating and…
Approaches to Quantum Gravity: The causal set approach to Quantum Gravity
- Philosophy
- 2009
The ideas of spacetime discreteness and causality are important in several of the popular approaches to quantum gravity. But if discreteness is accepted as an initial assumption, conflict with…
Relative locality: a deepening of the relativity principle
- Physics
- 2011
We describe a recently introduced principle of relative locality which we propose governs a regime of quantum gravitational phenomena accessible to experimental investigation. This regime comprises…
Space-time as a causal set.
- PhilosophyPhysical review letters
- 1987
We propose that space-time at the smallest scales is in reality a causal set: a locally finite set of elements endowed with a partial order corresponding to the macroscopic relation that defines past…
The universe as a process of unique events
- Computer Science
- 2014
This work introduces a new kind of deterministic dynamics for a causal set in which new events are generated from pairs of progenitor events by a rule which is based on extremizing the distinctions between causal past sets of events.
Quantum energetic causal sets
- Philosophy
- 2013
We propose an approach to quantum theory based on the energetic causal sets, introduced in [1]. Fundamental processes are causal sets whose events carry momentum and energy, which are transmitted…