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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Thorsten Battefeld


PIRSA:09050067  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Preheating after Multi-Field Inflation
Speaker(s): Thorsten Battefeld
Abstract: We investigate the feasibility of explosive particle production via parametric resonance or tachyonic preheating in multi-field inflationary models by means of lattice simulations. We observe a strong suppression of resonances in the presence of four-leg interactions between the inflaton fields and ... read more
Date: 20/05/2009 - 11:30 am

PIRSA:06120020  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Non-Gaussianities from Multi-Field Inflation
Speaker(s): Thorsten Battefeld
Abstract: Non-Gaussianities are a generic prediction of multi-field inflationary models and within reach of upcoming experiments. After reviewing current observational limits and the physical origin of a non-zero three point correlation function, I will discuss the possibility of detectable non-Gaussian signa... read more
Date: 05/12/2006 - 9:00 am

PIRSA:06010003  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Perturbations in higher dimensions at the example of String Gas Cosmology
Speaker(s): Thorsten Battefeld
Abstract: The theory of cosmological perturbations provides a bridge between theoretical models of the early universe (often motivated by string theory) and astrophysical observation, e.g of the CMBR. Since extra dimensions are pivotal to string theory, the known lore of perturbation theory needs to be adjust... read more
Date: 17/01/2006 - 11:00 am
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