Unspeakables and the Epistemological path towards Quantum Gravity
arXiv:0712.3242 · doi:10.1142/S0218271808012103
Abstract
We offer a critical assessment of some generic features of various of the current approaches towards the construction of a Theory of Quantum Gravity. We will argue that there is a need for further conceptual clarifications before such an enterprise can be launched on a truly well grounded setting, and that one of the guiding principles that can be viewed as part of the reasons for successes of the past theoretical developments is the identification of Unspeakables: Concepts that should not only play no role in the formulation of the theories, but ones that the formalism of the theory itself should prevent from ever been spoken about.
Invited article for "GRF2007 Special Issue of " IJMPD . In press
References in corpus (37)
- Microscopic Origin of the Bekenstein-Hawking Entropy
- Lorentz-Violating Extension of the Standard Model
- Noncommutative Field Theory
- CPT Violation and the Standard Model
- Quantum Field Theory on Noncommutative Spaces
- Potential Sensitivity of Gamma-Ray Burster Observations to Wave Dispersion in Vacuo
- High-Energy Tests of Lorentz Invariance
- Quantum Geometry and Black Hole Entropy
- Nonstandard optics from quantum spacetime
- Loop Quantum Gravity
- A Gravity Theory on Noncommutative Spaces
- Ultraviolet modifications of dispersion relations in effective field theory
- Quantum gravity corrections to neutrino propagation
- Quantum Gravity: a Progress Report
- Loop quantum gravity and light propagation
- Lorentz invariance and quantum gravity: an additional fine-tuning problem?
- Lorentz violation and Crab synchrotron emission: a new constraint far beyond the Planck scale
- Quantum Measurement, Gravitation, and Locality
- Quantum-Gravitational Diffusion and Stochastic Fluctuations in the Velocity of Light
- Astrophysical limits on quantum gravity motivated birefringence
- On the quantum origin of the seeds of cosmic structure
- New Observational Bounds to Quantum Gravity Signals
- A Microscopic Recoil Model for Light-Cone Fluctuations in Quantum Gravity
- Quantum gravity and spin 1/2 particles effective dynamics
- On the regularization ambiguities in loop quantum gravity
- Quantum Gravity, the Origin of Time and Time's Arrow
- Naturalness in emergent spacetime
- Gravitational-Recoil Effects on Fermion Propagation in Space-Time Foam
- Analogue quantum gravity phenomenology from a two-component Bose-Einstein condensate
- Quantum Gravity - Testing Time for Theories
- Large Fluctuations in the Horizon Area and what they can tell us about Entropy and Quantum Gravity
- Bounds on Stringy Quantum Gravity from Low Energy Existing Data
- Comments on Challenges for Quantum Gravity
- The Internal and External Problems of String Theory - A Philosophical View
- Quantum Geometry as a Relational Construct
- When is S=A/4?
- Algebraic Quantum Theory on Manifolds: A Haag-Kastler Setting for Quantum Geometry