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Resonant slepton production yields CMS eejj and epTjj excesses
(APS, 2015-01-13)
Recent CMS searches for dileptoquark production report local excesses of 2.4σ in an eejj channel and 2.6σ in an epTjj channel. Here, we simultaneously explain both excesses with resonant slepton production in R-parity ...
Redshifting of cosmological black bodies in BSBM varying-alpha theories
(APSPHYSICAL REVIEW D, 2014-12-04)
We analyse the behaviour of black-body radiation in theories of electromagnetism which allow
the electron charge and the fine structure constant to vary in space and time. We show that such
theories can be expressed as ...
Maximum Tension: with and without a cosmological constant
(OUPMonthly Notices of the Royal Astronomical Society, 2014-12-04)
We discuss various examples and ramifications of the conjecture
that there exists a maximum force (or tension) in general relativistic
systems. We contrast this situation with that in Newtonian gravity,
where no maximum ...
Plethora of transitions during breakup of liquid filaments
(PNASProceedings of the National Academy of Sciences, 2015-03-30)
Thinning and breakup of liquid filaments are central to dripping of leaky faucets, inkjet drop formation, and raindrop fragmentation. As the filament radius decreases, curvature and capillary pressure, both inversely ...
Lubricated viscous gravity currents
(CUPJournal of Fluid Mechanics, 2015-02-10)
We present a theoretical and experimental study of viscous gravity currents lubricated by another viscous fluid from below. We use lubrication theory to model both layers as Newtonian fluids spreading under their own weight ...
Early-time free-surface flow driven by a deforming boundary
(Cambridge University PressJournal of Fluid Mechanics, 2015-02-24)
When a solid boundary deforms rapidly into a quiescent liquid layer, a flow is in-
duced that can lead to jet formation. An asymptotic analytical solution is presented
for this flow, driven by a solid boundary deforming ...
Constrained dynamics and higher derivative systems in modified gravity
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2015-06-09)
In this thesis, higher derivative theories and constrained dynamics are investigated in detail. In the first part of the thesis, we discuss how the Ostrogradski instability emerges in non-degenerate higher derivative ...
Accelerated Gravitational Wave Parameter Estimation with Reduced Order Modeling
(APSPhysical Review Letters, 2015-02-20)
Inferring the astrophysical parameters of coalescing compact binaries is a key science goal of the upcoming advanced LIGO-Virgo gravitational-wave detector network and, more generally, gravitational-wave astronomy. However, ...
On High-Frequency Sound Generated by Gust-Aerofoil Interaction in Shear Flow
(CUPJournal of Fluid Mechanics, 2015-02-04)
A theoretical model is constructed to predict the far-field sound generated by
high-frequency gust–aerofoil interaction in steady parallel shear flow, including the
effects of aerofoil thickness. Our approach is to use ...
Detecting pairwise correlations in spike trains: an objective comparison of methods and application to the study of retinal waves
(Society for NeuroscienceJournal of Neuroscience, 2014-10-22)
Correlations in neuronal spike times are thought to be key to processing in many neural systems. Many measures have been proposed to summarize these correlations and of these the correlation index is widely used and is the ...