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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C08012 - PASCOS 08PODCAST Subscribe to podcast

14th International Symposium on Particles, Strings and Cosmology (PASCOS '08)

Organizer(s): Robert Myers   Freddy Cachazo   Jaume Gomis   Cliff Burgess   Justin Khoury   James Taylor   Maxim Pospelov   Alex Buchel  

Collection URL: http://pirsa.org/C08012

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Detecting Cosmic Strings in the CMB
Speaker(s): Rebecca Danos
Abstract: We further advance the application of the Canny algorithm for detecting cosmic strings in CMB maps.
Date: 03/06/2008 - 2:30 pm
Collection: PASCOS 08

Ultralight Gravitino at the LHC
Speaker(s): Koichi Hamaguchi
Abstract: In supersymmetric (SUSY) models with the gravitino being the lightest SUSY particle (LSP), the SUSY breaking scale (i.e., the gravitino mass) could be determined by measuring the lifetime of the next-to-lightest SUSY particle (NLSP). However, for an ultralight gravitino of mass of O(1) eV, which is ... read more
Date: 03/06/2008 - 2:45 pm
Collection: PASCOS 08

Non-Gaussianities in extended D-term inflation
Speaker(s): Francis Bernardeau
Abstract: I will present extensions of hybrid inflationary models in the context of supersymmetric D-term in- flation. I will show that there exists a large domain of parameters in which significant primordial non-Gaussianities can be produced while preserving a scale free power spectrum for the metric fluctu... read more
Date: 03/06/2008 - 2:45 pm
Collection: PASCOS 08

BPS preons and M-theory
Speaker(s): J. A. de Azcarraga
Abstract: 'BPS preons were conjectured (PRL 86, 4451 (2001), hep-th/0101113) as the basic constituents of M-theory; they are states preserving 31/32 supersymmetries. We discuss the absence of preonic solutions in D=10,11 supergravities and its possible implications. The AdS generalization of the BPS preons, t... read more
Date: 03/06/2008 - 2:45 pm
Collection: PASCOS 08

Nonlocal Inflation from String Theory
Speaker(s): Neil Barnaby
Abstract: Many string theorists and cosmologists have recently turned their attention to building and testing string theory models of inflation. One of the main goals is to find novel features that could distinguish stringy models from their field theoretic counterparts. This is difficult because, in most ex... read more
Date: 03/06/2008 - 3:00 pm
Collection: PASCOS 08

Non-minimal Universal Extra Dimensions
Speaker(s): Thomas Flacke
Abstract: We study the effects of boundary terms in models with a flat 'Universal'' Extra Dimension in which all Standard Model fields propagate in the bulk. We show how non-minimal boundary terms change the mass spectrum and interactions of Kaluza-Klein modes, allow for new dark matter candidates from UED, a... read more
Date: 03/06/2008 - 3:00 pm
Collection: PASCOS 08

Constraining the inflationary action with cosmological observations
Speaker(s): Ghazal Geshnizjani
Abstract: If inflation is to be considered in an unbiased way, as possibly originating from one of a wide range of underlying theories,then observations need not be simply applied to reconstructing the inflaton potential, V(phi), or a specific kinetic term, as in DBI inflation, but rather to reconstruct the i... read more
Date: 03/06/2008 - 3:00 pm
Collection: PASCOS 08

Sequestering in models of F-term uplifting
Speaker(s): Hiroyuki Abe
Abstract: We show the nature of sequestering hidden sector in five-dimensional supergravity models, where a negative vacuum energy of the nonperturbative modulus potential is canceled by a dynamically generated F-term in the hidden sector. Soft supersymmetry breaking terms are explicitly shown in the case tha... read more
Date: 03/06/2008 - 3:15 pm
Collection: PASCOS 08

Gravitational Radiation from Preheating
Speaker(s): John Giblin
Abstract: Parametric resonance, also known as preheating, is a plausible mechanism for bringing about the transition between the inflationary phase and a hot, radiation dominated universe. This epoch results in the rapid production of heavy particles far from thermal equilibrium and has the potential to sourc... read more
Date: 03/06/2008 - 3:15 pm
Collection: PASCOS 08

Virtual extra dimensions from unparticle fields
Speaker(s): Jonas Mureika
Abstract: The phenomenology of TeV-scale physics can be modified by the existence of scale-invariant 'unparticle' fields that can couple to the standard model sector. In particular, it has been shown that unparticles can alter gravitational interactions in a similar fashion to extra dimensions. Observable res... read more
Date: 03/06/2008 - 3:15 pm
Collection: PASCOS 08

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