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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Robert Brandenberger


Quantum Gravity Effects in the (Early and Late) Universe
Abstract: Quantum Gravity at the origin of seeds of cosmic structure?
This meeting shows a our impatience for uncovering at long last any signal of unknown physics that might have a quantum gravitational origin. I will argue that the transition from a homogenou... read more
Date: 23/10/2012 - 10:20 am

Photons and Quantum Gravity in Astrophysics
Abstract: Asymptotically safe inflation and CMB polarization
The presence of complex critical exponents in the scaling behavior of the Newton constant and Cosmological  constant has dramatic consequences at the inflation scale. In particular an infinite... read more
Date: 22/10/2012 - 4:30 pm

Looking for Cosmic Strings in New Observational Windows
Abstract: Cosmic strings are predicted to arise in both inflationary and non-inflationary cosmological models. The signatures of such strings will stand out particularly well at higher redshifts. I will discuss how to look for these signatures in CMB redshift and polarization maps and in 21cm redshift su... read more
Date: 10/08/2011 - 2:00 pm

Background Cosmology and Cosmological Perturbations in Horava-Lifshitz Gravity
Abstract:
Date: 09/11/2009 - 2:00 pm

PIRSA:09100197  ( Flash Presentation , MP3 , PDF ) Which Format?
Meet a Scientist - Prof. Robert Brandenberger
Abstract: Cosmology as a natural meeting ground for fundamental theory (e.g. superstring theory or quantum gravity) and observations. Exploring how seeds laid down in the very early universe developed into the large scale structure we observe in the universe today.
Date: 05/10/2009 - 2:40 am
Collection: Meet a Scientist

Holography in String Gas Cosmology
Abstract: I will review the string gas scenario of structure formation, stressing the role which holography plays. I will also discuss another way of obtaining a scale-invariant spectrum of cosmological perturbations (with specific signatures in the bispectrum) which may be realizable in scenarios based on th... read more
Date: 16/07/2009 - 4:00 pm

Cosmology of the Lee-Wick Model
Abstract: The Lee-Wick model has recently been put forwards as an alternative to supersymmetry for solving the hierarchy problem of particle physics. I will show that, modulo important consistency questions, coupling the Lee-Wick model to cosmology leads to a bouncing universe cosmology with a scale-invariant... read more
Date: 11/11/2008 - 2:00 pm

Progress and Puzzles in String Gas Cosmology
Abstract:
Date: 07/03/2008 - 2:00 pm

Probing string theory through cosmological observations?
Abstract: If string theory is the correct theory which unifies gravity with the other forces of nature at a quantum level, it should determine the evolution of the earliest stages of the universe. I will discuss how stringy signatures of this early phase may be visible in current cosmological observations.
Date: 08/11/2007 - 11:15 am

50 years since WMAP
Abstract:
Date: 28/10/2005 - 9:30 am

Cosmology
Abstract:
Date: 17/08/2004 - 3:15 pm
Collection: ISSYP 2004

Cosmology
Abstract:
Date: 17/08/2004 - 3:15 pm
Collection: ISSYP 2004
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