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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C06016 - Young Researchers Conference - 2006PODCAST Subscribe to podcast

This event provides an opportunity for top young physicists to enjoy a multidisciplinary conference, and interact with resident scientists. In addition, participants will have an opportunity to learn more about Perimeter Institute.

Organizer(s): Justin Khoury  

Collection URL: http://pirsa.org/C06016

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Aspects of Nonlinear Perturbations in Cosmological Models
Speaker(s): Bojan Losic
Abstract: I discuss two instances in which nonlinear perturbations in cosmological models are important. First, in de Sitter space-time, the bare necessity that the perturbations should be part of a consistent Taylor expansion of the field equations leads to the requirement, using the 'linearization stability... read more
Date: 04/12/2006 - 9:00 am

Brane Gravity in Six Dimensional Flux Compactifications
Abstract: I consider a six dimensional space-time, in which two of the dimensions are compactified by a flux. Matter can be localized on a codimension one brane coupled to the bulk gauge field and wrapped around an axis of symmetry of the internal space. By studying the linear perturbations around this backgr... read more
Date: 04/12/2006 - 10:30 am

Non-Isotropy of the CMB Power Spectrum in Single Field Inflation
Speaker(s): Andreas Ross
Abstract: At large scales the CMB spectrum measured by WMAP appears to have an anomalously low power of the quadrupole and an asymmetry of power at l < 40. We show that with an initial stage of fast roll of the inflation and a gradient in the initial conditions a simple chaotic inflation model may be capable ... read more
Date: 04/12/2006 - 11:30 am

Kappa Deformed Field Theory
Speaker(s): Sebastian Nowak
Abstract: The description of noncommutative space will be given. I will show the relation between field theory on kappa-Minkowski space and the one in Minkowski. This construction leads to deformed energy momentum conservation law for energies close to the Planck scale.
Date: 04/12/2006 - 2:00 pm

A Cosmological Sector in Loop Quantum Gravity
Speaker(s): Tim Koslowski
Abstract: A classical Hamiltonian system can be reduced to a subsystem of "relevant observables" using the pull-back under a Poisson embedding of the "relevant phase space" into the "full phase space". Since a quantum theory can be thought of a noncommutative phase space, one encounters the problem of the emb... read more
Date: 04/12/2006 - 3:00 pm

Emergence of a Background From Background Independent Quantum Gravity
Speaker(s): Willem Westra
Abstract: TBA
Date: 04/12/2006 - 4:30 pm

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

Bubble Nucleation and Eternal Inflation
Speaker(s): Matthew Johnson
Abstract: A number of mechanisms have been introduced in previous literature that might be responsible for transitions between metastable minima in a scalar field theory coupled to gravity. The connection between these transition mechanisms has remained unclear, and current formulations of eternal inflation o... read more
Date: 05/12/2006 - 10:30 am

Superluminal - scalar fields and cosmology
Speaker(s): Alex Vikman
Abstract:
Date: 05/12/2006 - 11:30 am

Nongeometric Flux Compactifications
Speaker(s): Brian Wecht
Abstract: TBA
Date: 05/12/2006 - 1:30 pm

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