Talks
Ignore random junk pages at the end of these files.
- How to detect lensing rotation (inc. polarization non-rotation), Geneva conference, July 2024
- How to detect lensing rotation, Moriond, April 2024
- Lensing of the CMB and non-Gaussian signals, Queen Mary, March 2024
- CMB and H0 3Hr review, Cargèse cosmology school, April 2023. PDF.
- CMB lensing short review, Cambridge workshop 2022
- Effects and uses of CMB lensing, Cambridge 2022
- CMB codes (short theory review, Computational Tools for High Energy Physics and Cosmology remote Nov 2021; PowerPoint)
- Cosmological Hubble Tension (remote review, Birmingham colloquium Nov 2021)
- Growth of structure from CMB (Growth of structure webinar series June 2021) - Video, Powerpoint with videos and animations, Python plots notebook
- Cosmic Concordance, Tensions and Lensing (Prague remote, Dec 2020)
- Cosmic Concordance and Tensions (Texas Symposium, Portsmouth Dec 2019)
- Open questions after Planck (CosmoGold, Paris June 2019)
- CMB lensing, delensing and correlations (Cambridge, June 2019)
- H0 from CMB and Planck (The Hubble Constant Controversy Berlin, Nov 2018)
- CMB lensing and delensing (Zurich, Oct 2018)
- Planck lensing 2018 (The Nonlinear Universe, Smartno, Slovenia 2018)
- Planck 2018 cosmology and parameters (Sesto workshop, Italy 2018)
- CMB Science Goals (RAS meeting May 2018)
- CMB Lensing (The CMB from A to Z, Cargèse school, November 2017)
- Introduction to CAMB (Webinar for tools bootcamp, Oct 2017)
- Delensing in practice and in principle (Cosmo conference, Paris August 2017)
- CMB Lensing and Delensing, (Imperial College, December 2016)
- Post-Born lensing of the CMB, Leiden lensing conference July 2016
- CMB Lensing (Planck and post-Born lensing), Madrid LSS, CMB and 21cm, June 2016
- Moriond Cosmology 2016 summary talk (50min, March 2016)
- Gravitational lensing for Planck 2015 (20min, Munich, July 2015 + Ferrara Dec 2014)
- Planck 2015 parameter constraints (40min, QMW/cosmo meeting, Feb 2015)
- Planck parameter constraints (50min,CERN, Jan 2015)
- New observables for future CMB anisotropy observations (40min,Benasque, Aug 2014 + Munich)
- BICEP2 and B modes (40min review, QMW, Apr 2014)
- CMB beyond a single power spectrum (50mins, Nottingham, Oct 2013)
- Rayleigh scattering: blue sky thinking for future CMB observations (20mins, Cosmo and RS meeting, Sept 2013; + Moriond March 2013)
- CMB polarization from Rayleigh scattering (25mins, ICTP Trieste, July 2013)
- Lensing and ISW (3hrs, lectures at CMB school ICTP Trieste, July 2013)
- LSS-CMB correlations (25min, Ascona, June 2013)
- Lensing from Planck (1hr, CERN, June 2013)
- Planck parameters and detection of Non-Gaussianities (50 mins, CITA, May 2013)
(online video, skip to 18:44 for non-Gaussianity) - CMB beyond the power spectrum (50 mins, Davis CA, May 2013)
- Planck and Neutrino Physics (50 mins, Berkeley Lab, May 2013)
- Primordial and Doppler modulations with Planck (20 mins, Santa Barbara, April 2013)
- Primordial squeezed non-Gaussianity and observables in the CMB (50 mins, Benasque, August 2012)
- Sampling methods for parameter inference in cosmology (50 mins, Numerical Cosmology, Cambridge July 2012)
- CMB lensing overview (20 mins, CoRe meeting Paris June 2012)
- CMB, lensing, and non-Gaussianities (25 mins, Moriond March 2012)
- CMB lensing and other non-Gaussianities (45 mins, Cambridge 2011)
- CMB lensing and other non-Gaussianities (60 mins, Munich 2011)
- CMB prospects (50 mins, Benasque 2011)
- CMB statistical anisotropy and the lensing bispectrum (1 hr, Imperial College December 2010)
- The Shape of the CMB Lensing Bispectrum (35 min, Benasque 2010; Longer version of talk given in Edinburgh two weeks earlier)
- Statistical anisotropy in CMB maps (15 min, Moriond 2010)
- Anisotropy in the CMB (45 min, Cardiff October 2009)
- CMB studies with Planck (45 min, review to reionization conference, Stockholm August 2009)
- CMB constraints on cosmology (25 min, review to JENAM April 2009)
- Cosmological observables after recombination (50 min, DAMTP March 2009)
- High-redshift 21cm and redshift distortions (45 min, Portsmouth Oct 2008)
- CMB Power Spectrum Likelihoods (technical talk to Planck meeting Dec 2007)
- CMB Lensing (40min invited review, IAP lensing conference 2007)
- 21cm from the dark ages (1hr, variations at CITA/Harvard/Perimeter/Imperial conference 2007)
- CMB lensing (2hr review, Sicily lensing summer school 2006)
- CMB and cluster lensing (20 minutes, Benasque 2006)
- Efficient MCMC for cosmological parameters (1/2hr, Sussex conference 2006)
- Observational constraints and cosmological parameters (1/2hr, Moriond 2006)
- Weak Lensing of the CMB (1hr, various places 2005/2006)
- CMB Theory Review (1.5hr, Santa Fe 2005)
- Primordial perturbations and precision cosmology from the Cosmic Microwave Background
(1hr unsuccessful Columbia job talk) - Primordial perturbations and precision cosmology from the Cosmic Microwave Background
(15min successful PPARC Advanced Fellowship talk) - Observational constraints on primordial perturbations (CITA/Perimeter meeting 2005)
- E/B Separation review (35min, Paris 2004)
- Cosmological parameters and the WMAP data (Sorrento 2003)
Movies/animations
- CMB perturbations evolution to recombination
- Adiabatic transfer function evolution (see Description)
- CDM isocurvature transfer function (as above)
- Spherical harmonic decomposition
- Evolution of comoving photon density (zoom in, showing growth)
- Comoving CDM density perturbation growth
- Comoving CDM density perturbations (growth scaled out)
- Acoustic photon wave from an overdensity
- Evolution of tensor amplitude
- Planck CMB lensing parameters (3D coloured scatter)
- Planck CMB lensing vs DES Y1 lensing (3D coloured scatter)
Working Notes - all very old
Published papers are listed on the Home Page.
- CMB Non-gaussinity
- Dark Energy
- E/B, PseudoCls, sky likelihoods
- Tensor modes and the CMB
- Ekpyrosis
- IGLOO pixelizations
- anthropics
- Notes on CAMB
- CosmoMC notes
See also my thesis. It has been updated for all known typos - let me know if you spot any more.
Maple files
- Gamma derivation of correct result (dark energy trackers)
- Second order action in inflation for different variable choices (maple 3)
- Ekpyrotic perturbations and bounce (check results of KOST's paper) (maple 6)
More are linked from the Early Universe course webpage.
Older material
- Scale invariant gravity (unpublished paper)
- Domain walls
- Electroweak theory in geometric algebra
- Geometric Algebra identities
- Hedgehog solutions in GA