QG2 - Quantum Gravity Phenomenology |
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Speaker |
Briscese, Fabio |
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Coauthors |
Leonardo Modesto |
| Talk Title |
Formal aspects of nonlocal quantum field theory |
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Abstract |
It has been realized that nonlocality might be a key ingredient for the formulation of a quantum renormalizable theory of gravitation. In facts, nonlocal gravitational models are earning growing interest in the scientific community, since they are super-renormalizable or even finite at quantum level. In this seminar I will discuss some general features of nonlocal field theories. In particular, I will show how Cutkosky rules are generalized to the case of nonlocal theories, so that the perturbative unitarity is easily established. Moreover, I will discuss the problem of causality in nonlocal theories. |
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