Understand
We propose an inflationary scenario inspired by a recent formulation, in terms of coherent states, of non-commutative quantum field theory.
- We consider the semiclassical Einstein equations, and we exploit the ultraviolet finiteness of the non-commutative propagator to construct the expectation value of the energy momentum tensor associated to a generic scalar field.
- It turns out that the latter is always finite and dominated by an effective cosmological constant.
- By combining this general feature with the intrinsic fuzziness of spacetime, we show that non-commutativity governs the energy density of the early Universe in such a way that the strong energy condition is violated.
Reading the bibliography…