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Now showing items 731-740 of 1850
On the stability of gravity with Dirichlet walls
(IoPClassical and Quantum Gravity, 2015-11-06)
Dirichlet walls - time-like boundaries at a finite distance from the bulk on which the induced metric is held fixed - have been used to model AdS spacetimes with a finite cutoff. In the context of gauge/gravity duality, ...
Connection between nonlinear energy optimization and instantons.
(American Physical SocietyPhysical review. E, 2018-01)
How systems transit between different stable states under external perturbation is an important practical issue. We discuss here how a recently developed energy optimization method for identifying the minimal disturbance ...
Interaction between the Blasius boundary layer and a free surface
(Cambridge University PressJournal of Fluid Mechanics, 2018-03-25)
We consider the steady, supercritical flow of a fluid layer. The layer is bounded above by a free surface and below by a rigid no-slip base. The base is in two parts: the downstream part of the base is stationary, while ...
New integrable models and analytical solutions in f(R) cosmology with an ideal gas
(American Physical SocietyPhysical Review D - Particles, Fields, Gravitation and Cosmology, 2018-01-23)
In the context of f(R)-gravity with a spatially flat FLRW metric containing an ideal fluid, we use the method of invariant transformations to specify families of models which are integrable. We find three families of f(R) ...
Black holes with a single Killing vector field: black resonators
(Journal of High Energy Physics, 2015-12-01)
Polarised black holes in AdS
(Classical and Quantum Gravity, 2016-05-03)
Hovering black holes from charged defects
(Classical and Quantum Gravity, 2015-05-21)
Mathematical Imaging Tools in Cancer Research - From Mitosis Analysis to Sparse Regularisation
(University of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsRobinson College, 2018-02-24)
This dissertation deals with customised image analysis tools in cancer research. In the field of biomedical sciences, mathematical imaging has become crucial in order to account for advancements in technical equipment and ...
The effect of gas on multi-stage mixed-flow centrifugal pumps
(University of CambridgeDepartment of Applied Mathematics and Theoretical PhysiscsDarwin, 2018-03-24)
The production from an oil reservoir is a mixture of liquids (oil and water) and gas, and is often maintained by using a pump placed in the well to ensure a continuous flow to the surface. Electrical Submersible Pumps ...
Geographic and demographic transmission patterns of the 2009 A/H1N1 influenza pandemic in the United States
(University of CambridgeApplied Mathematics and Theoretical PhysicsKing's, 2018-05-19)
This thesis describes how transmission of the 2009 A/H1N1 influenza pandemic in the United States varied geographically, with emphasis on population distribution and age structure. This is made possible by the availability ...