The time is right to take a closer look at non-Gaussian signatures from inflation because of three key recent developments:

  1. Observational prospects: Forthcoming observations, notably WMAP and Planck, will improve the precision of NG measures by an order of magnitude.

  2. Inflationary model-building: Recent realistic inflationary model-building (e.g. brane inflation) generically has extra scalar fields which may source observable NG.

  3. Tractability: Recent developments in the study of NG superhorizon evolution in multifield inflation, as well as the study of quantum effects, means that the problem is now becoming tractable and quantitative.

This workshop aims to bring together many of the world's leading researchers actively working on non-Gaussianities from inflation, along with experts in searching for non-Gaussianity in observational data. The primary objectives of the workshop are to push forward the methods by which NG can be quantitatively calculated, to identify inflationary models in which large NG is generic, and to propose observational strategies for finding NG.

The workshop programme aims to maximise opportunities for interactions between all participants, with relatively short invited contributions leaving plenty of time for questions and further discussion. A preliminary schedule is now available on the Programme page. The meeting will begin after lunch on Wednesday 19th April 2006 and end formally at the end of Friday 21st April, but there will be the opportunity for further informal discussions on the morning of Saturday 22nd April.

Confirmed speakers

Nicola Bartolo (ICTP, Trieste) Second-order perturbation theory
Peter Coles (Nottingham) Non-Gaussianity and large-scale structure
Paolo Creminelli (Trieste) Ghost inflation and other recent models
Kari Enqvist (Helsinki) Non-Gaussianity from preheating
Alan Heavens (Edinburgh) The quest for non-Gaussianity
Stephen Hawking (Cambridge) Introductory remarks
Eiichiro Komatsu (Texas) WMAP and observational constraints on non-Gaussianity
Jim Lidsey (QMW, London) Tree-level non-Gaussianity at horizon crossing
David Lyth (Lancaster) Calculating non-Gaussianity in the ∂N approach
Joao Magueijo (Imperial) Non-Gaussian features in CMB maps
Sabino Matarrese (Padua) Non-Gaussianity at recombination and afterwards
Gerasimos Rigopoulos (Utrecht) Nonlinear evolution of multifield inflation
Antonio Riotto (Padua) Non-Gaussianities from the end of inflation
Misao Sasaki (Kyoto) A new ∂N formalism for multi-component inflation
Paul Shellard (Cambridge) Numerical and stochastic approaches to non-Gaussianity
Bartjan van Tent (Cambridge) Large non-Gaussianity from multiple-field inflation
Filippo Vernizzi (Helsinki) Conserved non-linear quantities in cosmology
David Wands (Portsmouth) Non-Gaussianity from the curvaton model
Steven Weinberg (Texas) Quantum contributions to cosmological correlations

Please note that titles are not final and indicate topical areas to be covered.

The workshop venue is the Centre for Mathematical Sciences, the award-winning buildings that have housed the Department of Applied Mathematics and Theoretical Physics since 2000. With its excellent facilities and good transport connections to international airports, the CMS has an excellent track record hosting international conferences. Talks will take place in the main lecture hall (MR2) with lunches served upstairs in the central core (pictured right), a pleasant setting for research interactions. Workshop participants will be housed nearby in a modern Cambridge college, Robinson College. For local maps and further information refer to the Location page, while transport instructions can be found under Travel.

The local organising committee for this meeting consists of Paul Shellard and Bartjan van Tent (whose emails are respectively epss and bvtent at It is being run under the auspices of the new Cambridge Centre for Theoretical Cosmology housed in DAMTP which is generously supported by the Stephen Hawking Endowment for Cosmological Research.

Workshop secretary:

Cheryl Billington,
DAMTP, Centre for Mathematical Sciences,
University of Cambridge,
Wilberforce Road, Cambridge, CB3 0WA, UK
Telephone: +44 1223 764267 / 766883 (fax).
Conference email: NGI_workshop 'at'