All Outputs (6)

Open quantum dynamics induced by light scalar fields (2019)
Journal Article
Burrage, C., Käding, C., Millington, P., & Minár, J. (2019). Open quantum dynamics induced by light scalar fields. Physical Review D, 100(7), Article 076003. https://doi.org/10.1103/PhysRevD.100.076003

We consider the impact of a weakly coupled environment comprising a light scalar field on the open dynamics of a quantum test mass, resulting in a master equation for the test mass that features corrections to the coherent dynamics, as well as decohe... Read More about Open quantum dynamics induced by light scalar fields.

Influence functionals, decoherence and conformally coupled scalars (2019)
Journal Article
Burrage, C., Käding, C., Millington, P., & Minář, J. (2019). Influence functionals, decoherence and conformally coupled scalars. Journal of Physics: Conference Series, 1275(1), Article 012041. https://doi.org/10.1088/1742-6596/1275/1/012041

Some of the simplest modifications to general relativity involve the coupling of additional scalar fields to the scalar curvature. By making a Weyl rescaling of the metric, these theories can be mapped to Einstein gravity with the additional scalar f... Read More about Influence functionals, decoherence and conformally coupled scalars.

Experiment to Detect Dark Energy Forces Using Atom Interferometry (2019)
Journal Article
Sabulsky, D., Dutta, I., Hinds, E., Elder, B., Burrage, C., & Copeland, E. J. (2019). Experiment to Detect Dark Energy Forces Using Atom Interferometry. Physical Review Letters, 123(6), 1-6. https://doi.org/10.1103/PhysRevLett.123.061102

The accelerated expansion of the universe motivates a wide class of scalar field theories that modify General Relativity (GR) on large scales. Such theories require a screening mechanism to suppress the new force in regions where the weak field limit... Read More about Experiment to Detect Dark Energy Forces Using Atom Interferometry.

Black holes, gravitational waves and fundamental physics: A roadmap (2019)
Journal Article
Askar, A., Bertone, G., Bon, E., Blas, D., Brito, R., Burrage, C., …Zilhão, M. (2019). Black holes, gravitational waves and fundamental physics: A roadmap. Classical and Quantum Gravity, 36(14), Article 143001. https://doi.org/10.1088/1361-6382/ab0587

© 2019 IOP Publishing Ltd. The grand challenges of contemporary fundamental physics-dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-all involve gravity as a key component. And o... Read More about Black holes, gravitational waves and fundamental physics: A roadmap.

Symmetron scalar fields: modified gravity, dark matter, or both? (2019)
Journal Article
Burrage, C., Copeland, E. J., Käding, C., & Millington, P. (2019). Symmetron scalar fields: modified gravity, dark matter, or both?. Physical Review D, 99(4), Article 043539. https://doi.org/10.1103/physrevd.99.043539

Scalar fields coupled to gravity through the Ricci scalar have been considered both as dark matter candidates and as a possible modified gravity explanation for galactic dynamics. It has recently been demonstrated that the dynamics of baryonic matter... Read More about Symmetron scalar fields: modified gravity, dark matter, or both?.

Particle level screening of scalar forces in 1+1 dimensions (2019)
Journal Article
Burrage, C., Elder, B., & Millington, P. (2019). Particle level screening of scalar forces in 1+1 dimensions. Physical Review D, 99(2), Article 024045. https://doi.org/10.1103/physrevd.99.024045

We investigate how nonlinear scalar field theories respond to point sources. Taking the symmetron as a specific example of such a theory, we solve the nonlinear equation of motion in one spatial dimension for (i) an isolated point source and (ii) two... Read More about Particle level screening of scalar forces in 1+1 dimensions.