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The convective desalination of sea ice
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-07-01)
This thesis aims to improve our understanding of the fundamental processes affecting the growth of sea ice in the polar oceans in order to improve climate models. Newly formed sea ice contains a significant amount of salt ...
Multiple solutions in supersymmetry and the Higgs
(The Royal Society PublishingPhilosophical Transactions of the Royal Society A, 2014-11-24)
Weak-scale supersymmetry is a well-motivated, if speculative, theory beyond the Standard Model of particle physics. It solves the thorny issue of the Higgs mass, namely: how can it be stable to quantum corrections, when ...
Limits on a Gravitational Field Dependence of the Proton{Electron Mass Ratio from H2 in White Dwarf Stars
(American Physical SocietyPhysical Review Letters, 2014-09-18)
Spectra of molecular hydrogen (H2) are employed to search for a possible proton-to-electron
mass ratio (μ) dependence on gravity. The Lyman transitions of H2, observed with the Hubble
Space Telescope towards white dwarf ...
Jordan-Wigner formalism for arbitrary 2-input 2-output matchgates and their classical simulation
(Rinton PressQuantum Information and Computation, 2015-05-01)
In Valiant's matchgate theory, 2-input 2-output matchgates are 4 4 matrices that
satisfy ten so-called matchgate identities. We prove that the set of all such matchgates
(including non-unitary and non-invertible ones) ...
Explaining the CMS eejj Excess With R−parity Violating Supersymmetry and Implications for Neutrinoless Double Beta Decay
(American Physical SocietyPhysical Review D, 2015-01-28)
The recent CMS searches for the right handed gauge boson WR reports an interesting deviation
from the Standard Model. The search has been conducted in the eejj channel and has shown
an excess around meejj ~ 2 TeV. In this ...
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 ...