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The 4th UniverseNet School - Frontiers of Particle Cosmology

13–18 Sept 2010
Lecce, Università del Salento
Europe/Rome timezone
The 4th UniverseNet Annual School - Lecce, 13-18 September 2010

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Session

3 Talks

15 Sept 2010, 11:45
Lecce, Università del Salento

Lecce, Università del Salento

Via Michele De Pietro, 12 I-73100 Lecce (LE)

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  1. 56. LAZARIDES, George (Thessaloniki): Hybrid Inflation and Peccei-Quinn phase transition
    15/09/2010, 11:45
    We consider an inflationary model based only on renormalizable superpotential terms in which a superheavy scale hybrid inflation is followed by a Peccei-Quinn (PQ) phase transition. We show that the field which triggers the PQ phase transition influences drastically the inflationary dynamics and that the Universe undergoes a secondary phase of reheating after the PQ phase transition....
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  2. 57. PERIVOLAROPOULOS, Leandros (Ioannina): Growth of Dark Energy Perturbations in Scalar-Tensor Cosmologies
    15/09/2010, 12:10
    I compare the growth of dark energy and matter perturbations in scalar tensor cosmologies with the corresponding growth in minimally couple quintessence. An interesting amplification of dark energy perturbations will be discussed and other useful observational signatures will be pointed out.
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  3. 58. SAKELLARIADOU, Mairi (London): NonCommutative Spectral Geometry as an approach to Unification
    15/09/2010, 12:35
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