Search Results for author: W. J. Handley

Found 5 papers, 4 papers with code

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

1 code implementation7 Jan 2021 W. E. V. Barker, A. N. Lasenby, M. P. Hobson, W. J. Handley

It was recently found that, when linearised in the absence of matter, 58 cases of the general gravitational theory with quadratic curvature and torsion are (i) free from ghosts and tachyons and (ii) power-counting renormalisable.

General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory

maxsmooth: Rapid Maximally Smooth Function Fitting With Applications in Global 21-cm Cosmology

1 code implementation29 Jul 2020 H. T. J. Bevins, W. J. Handley, A. Fialkov, E. de Lera Acedo, L. J. Greenhill, D. C. Price

MSFs are applied to data from LEDA for the first time in this paper and we identify the presence of sinusoidal systematics.

Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics

Dense output for highly oscillatory numerical solutions

1 code implementation9 Jul 2020 F. J. Agocs, M. P. Hobson, W. J. Handley, A. N. Lasenby

We present a method to construct a continuous extension (otherwise known as dense output) for a numerical routine in the special case of the numerical solution being a scalar-valued function exhibiting rapid oscillations.

Computational Physics Instrumentation and Methods for Astrophysics

An efficient method for solving highly oscillatory ordinary differential equations with applications to physical systems

no code implementations30 May 2019 F. J. Agocs, W. J. Handley, A. N. Lasenby, M. P. Hobson

We present a novel numerical routine (oscode) with a C++ and Python interface for the efficient solution of one-dimensional, second-order, ordinary differential equations with rapidly oscillating solutions.

Computational Physics Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics Numerical Analysis Numerical Analysis

PolyChord: next-generation nested sampling

2 code implementations30 May 2015 W. J. Handley, M. P. Hobson, A. N. Lasenby

PolyChord is a novel nested sampling algorithm tailored for high-dimensional parameter spaces.

Instrumentation and Methods for Astrophysics

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