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William E. V. Barker

William E. V. Barker

PhD student

NEW WEBSITE:

www.wevbarker.com

~~

Gauge theories of gravity

Hamiltonian formulation of gravity

Horndeski theory

Cosmological tensions

Gravitational energy localisation

Room K34
Kavli Institute for Cosmology
Madingley Road

Cambridge , Cambridgeshire CB3 0HA
Office Phone: +44-(0)1223-337550

Biography:

Check out my new website:

wevbarker.com

You can also find some materials on my ORCID:

Research Interests

My research is presently focused on the Hamiltonian structure of gravitational gauge theories, i.e. generalisations of Einstein's general relativity (GR) to include torsion, non-metricity and scale-invariance. The Hamiltonian formulation can further constrain such theories which are apparently ghost-free and causal.

My talk at the CfH conference covers some previous work from this year:

I have separate interests in the BBGKY hierarchy (though not in a gauge gravity context), cosmological tensions and neural networks.

I have previously worked on gravitational energy localisation and gravitoelectromagnetism in GR.

Teaching

Relativity (Part II Physics)

Relativistic Astrophysics and Cosmology (Part III Physics)

Mathematics (Part IA Physics)

Key Publications

Nonlinear Hamiltonian analysis of the new quadratic torsion theories Part I. Cases with curvature-free constraints

W. E. V. Barker, A. N. Lasenby, M. P. Hobson and W. J. Handley

DOI

Mapping Poincaré gauge cosmology to Horndeski theory for emergent dark energy

W. E. V. Barker, A. N. Lasenby, M. P. Hobson and W. J. Handley

Systematic study of background cosmology in unitary Poincaré gauge theories with application to emergent dark radiation and H0 tension

W. E. V. Barker, A. N. Lasenby, M. P. Hobson and W. J. Handley

Static energetics in gravity

W. E. V. Barker, A. N. Lasenby, M. P. Hobson and W. J. Handley

Other Publications

Rotation of inertial frames by angular momentum of matter and waves

W. E. V. Barker, T. Ledvinka, D. Lynden-Bell and J. Bičák

Effects of the circularly polarized beam of linearized gravitational waves

W. E. V. Barker

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3rd Global 21-cm Workshop

Jun 16, 2020

Registration is open!

Nobel Prize in Physics for Didier Queloz

Oct 08, 2019

Nobel Prize in Physics awarded to Prof Didier Queloz from Cavendish Astrophysics

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