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Dr Will Handley

Dr Will Handley

Research Fellow at Gonville & Caius College

Cosmology

Cosmic Microwave Background

Bayesian Statistics

Nested Sampling

Will Handley is accepting applications for PhD students.

Will Handley is available for consultancy.


Office Phone: (01223) 766660

Biography:


2016 Oct-Present: Junior Research Fellow at Gonville & Caius College

2016 July-Sep: Post-doctoral position at UCL

2012-2016: PhD in Physics (University of Cambridge)

2008-2012: MSci in Experimental and Theoretical Physics (University of Cambridge)

Research Interests

Will Handley is a Theoretical Cosmologist, studying the very earliest moments of the universe, having recently completed his PhD under his supervisors Anthony Lasenby and Mike Hobson.

His main interest is in "Initial Conditions for Inflation", examining the effect that high energy physics has on the universe a split second after the Big Bang. In 2014, he proved that that the pre-inflationary universe takes an extremely generic form, independent of the type of particle which drives the early accelerated expansion of the universe.

In addition to theoretical investigation, he also examines the observational consequences of these new ideas; testing theories against the latest data from microwave telescopes using the University supercomputers.

Recently, his work has focussed on developing novel Bayesian algorithms for high-dimensional parameter estimation and model comparison using nested sampling. Possible applications currently under investigation include protein folding and compressed sensing, in addition to cosmological parameter estimation.

Will Handley is a member of the Planck Core HFI team 2.

Teaching

  • Supervisions: Part IA Mathematics for Natural Sciences (Michaelmas 2012-present)
  • Supervisions: Part IA Physics for Natural Sciences (Michaelmas 2015 - Easter 2016)
  • Supervisions: Part II General Relativity (Michaelmas 2013-present)
  • Demonstrating: Part II Theoretical Physics 1 (Michaelmas 2012)
  • Demonstrating: Part II Theoretical Physics 2 (Lent 2013)
  • Tripos Examples Classes: Part IA Mathematics for Natural Sciences (Easter 2014 -Present)

Part III Projects

Galileo

Other Professional Activities

Awards and Prizes

  • December 2013: Best Presentation (Cavendish Graduate Students Conference)
  • 2011-2012: Best Theoretical final year project (University of Cambridge)

Talks

  • Modern Bayesian Inference: Theory and Practice, RWTH Aachen (Jun 2017)
  • Parameter estimation and Model comparison, IFT Summer School, Madrid (Mar 2017)
  • PolyChord 2.0: Advances in Nested Sampling with astrophysical applications, CCA, Flatiron institute, New York (Feb 2017)
  • PolyChord 2.0 & the future of nested sampling, University College London, UK. (Sep 2016)
  • PolyChord 2.0 & the future of nested sampling, University of Sussex, UK. (May 2016)
  • PolyChord & the future of nested sampling, Edinburgh, UK. (Mar 2016)
  • PolyChord: next generation nested sampling, Max Planck Institute, Germany. (Dec 2015)
  • PolyChord: next generation nested sampling, University of Sussex, UK. (Feb 2015)
  • Kinetic dominance in the pre-inflationary universe, Cavendish grad. conference (Dec 2013)

Outreach

Key Publications

Dec 2016: Exploring Cosmic Origins with CORE: Inflation arXiv:1612.08270

Dec 2016: The Runge-Kutta-Wentzel-Kramers-Brillouin method arXiv:1612.02288

July 2016: Novel quantum initial conditions for inflation PRD arXiv:1607.04148

June 2015: PolyChord: next-generation nested sampling MNRAS arXiv:1506.00171 

Feb 2015: PolyChord: nested sampling for cosmology:  MNRAS arXiv:1502.01856

Feb 2015: Planck 2015 results: XX Constraints on Inflation: A&A arXiv:1502.02114

Jan 2014: Kinetic Initial Conditions for Inflation:  PRD arXiv:1401.2253

 

 

Other Publications

arXiv list http://arxiv.org/a/handley_w_1

ORCID ID https://orcid.org/0000-0002-5866-0445

Jul 2017: Exploring Cosmic Origins with CORE: mitigation of systematic effects arXiv:1707.04224

Jul 2017: Exploring Cosmic Origins with CORE: gravitational lensing of the CMB arXiv:1702.02259

Jul 2017: Exploring Cosmic Origins with CORE: Survey requirements and mission design arXiv:1706.0416

May 2017: Exploring Cosmic Origins with CORE: The Instrument  arXiv:1705.02170

Apr 2017: Exploring cosmic origins with CORE: effects of observer peculiar motion arXiv:1704.05764

Apr 2017: Exploring Cosmic Origins with CORE: B-mode Component Separation arXiv:1704.04501

Apr 2017: Dynamic nested sampling: an improved algorithm for parameter estimation and evidence calculation 1704.03459

Apr 2017:  Sampling errors in nested sampling parameter estimation arXiv:1703.09701

Apr 2017: Exploring Cosmic Origins with CORE: Cluster Science arXiv:1703.10456 

Jan 2017: Dynamical dark energy in light of the latest observations arXiv:1701.80165 Nature Astronomy

Dec 2016: Exploring Cosmic Origins with CORE: Cosmological Parameters arXiv:1612.00021

Sep 2016: Exploring Cosmic Origins with CORE: Extragalactic sources in Cosmic Microwave Background maps arXiv:1609.07263

June 2016: Constraining the dark energy equation of state using Baye's theorem and the Kullback-Liebler divergence arXiv:1607.00270

April 2016: AMI observations of ten CLASH galaxy clusters: SZ and X-ray data used together to determine cluster dynamical states MNRAS arXiv:1604.06120

June 2015: Bayesian Model selection without evidences: application to the dark energy equation of state MNRAS arXiv:1506.09024

Feb 2015: Planck 2015 results: I overview of products and scientific results: A&A arXiv:1502.01582

Thesis

Jan 2017: My thesis