Objective
One of the biggest gaps in our understanding of the physical world is the missing fundamental theory of gravity. Einstein and apos general relativity is a classical theory, but we know our world is quantum. So what is quantum gravity? Since, as Einstein taught us, any theory for gravity is also a theory of the geometry of space and time, this is an extremely challenging question - answering it will completely change our understanding of what space and time really are. This makes it also into a great intellectual adventure: it needs radically new ideas, new mathematics, and it will profoundly change physics. And what is more, in the not too distant future, effects of quantum gravity may be experimentally detectable!
Path integrals are a powerful and time honoured approach to quantum field theory. One can start working from an action, i.e. essentially just from symmetry properties of the theory in question, and in principle a reasonable classical limit is assured. All of that makes them very attractive for quantum gravity, too.
Of particular importance for us are three such approaches to quantum gravity: Loop Quantum Gravity, Spin Foam Models, and Causal Dynamical Triangulations. They all are promising approaches, but they also all have issues that are not yet well understood. Very important for us is that they are complementary in many ways. Relating the approaches to each other will shed new light on many old problems. Lessons learned in one can be applied to the other. And techniques developed for one can be transferred between the approaches.
In particular we propose to study the following issues:
- Divergence of spin foam amplitudes, and the relation between Euclidean and Lorentzian theory
- Mathematical foundations and diffeomorphism invariance of Causal Dynamical Triangulations
- Connection between Loop Quantum Gravity and Spin Foam Models
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences relativistic mechanics
- natural sciences mathematics pure mathematics geometry
- natural sciences physical sciences theoretical physics
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP6-2005-MOBILITY-5
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Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
80125 UTRECHT
Netherlands
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.