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Quantum gravity corrects QED（图）
Quantum gravity QED
2010/11/30
This week's issue of Nature includes a paper that's remarkable for two reasons: it is about quantum gravity – a topic usually not covered in the journal – and it is written by just one person. Now, af...
The Conformal Constraint in Canonical Quantum Gravity
Conformal Constraint Canonical Quantum Gravity
2010/12/17
Perturbative canonical quantum gravity is considered, when coupled to a renormalizable model for matter fields. It is proposed that the functional integral over the dilaton field should be disentangle...
Causal Sets: Quantum gravity from a fundamentally discrete spacetime
Quantum gravity discrete spacetime
2010/3/18
In order to construct a quantum theory of gravity, we may have to abandon certain assumptions we were making. In particular, the concept of spacetime as a continuum substratum is questioned. Causal Se...
We apply a recent argument of Verlinde to loop quantum gravity, to conclude that Newton's law of gravity emerges in an appropriate limit and setting. This is possible because the relationship between ...
The questions I have been asked during the 5th International School on Field Theory and Gravitation, have compelled me to give an account of the premises that I consider important for a beginner's app...
Aspects of nonrelativistic quantum gravity
Quantum gravity Black holes Information paradox Testable
2010/7/8
A nonrelativistic approach to quantum gravity is studied. At least for weak gravitational fields it should be a valid approximation. Such an approach can be used to point out problems and prospects in...
Higher Derivative Quantum Gravity Near Four Dimensions
Higher Derivative Quantum Gravity Four Dimensions
2010/10/18
We investigate the role of the Gauss-Bonnet term for the n = 4 and n = 4¡e renormalization group, for both conformal and general versions of the theory. The cancellation of the quantum effects o...
A recently introduced discrete formalism allows to solve the problem of time in quantum gravity in a relational manner. Quantum mechanics formulated with a relational time is not exactly unitary and i...