Department of Materials Science and Metallurgy: Recent submissions

Now showing items 221-240 of 648

  • Research data supporting "Assessment of ice flow dynamics in the zone close to the calving front of Antarctic ice shelves" 

    Wearing, Martin G.; Hindmarsh, Richard C. A.; Worster, M. Grae (Journal of Glaciology, 2015-06-11)


  • Self-organisation of confined active matter 

    Wioland, Hugo (University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2015-06-09)
    Active matter theory studies the collective behaviour of self-propelled organisms or objects. Although the field has made great progress in the past decade, little is known of the role played by confinement and surfaces. ...

  • Complexity Classification of Local Hamiltonian Problems 

    Cubitt, Toby; Montanaro, Ashley (IEEEIEEE Symposium on Foundations of Computer Science, 2015-10-22)
    The calculation of ground-state energies of physical systems can be formalised as the k-local Hamiltonian problem, which is the natural quantum analogue of classical constraint satisfaction problems. One way of making the ...

  • Consistency of the recent ATLAS Z+E_T^miss excess in a simplified general gauge mediation model 

    Allanach, Benjamin Christopher; Raklev, Are; Kvellestad, Anders (APSPhysical Review D, 2015-05-20)
    ATLAS recently reported a 3σ excess in a leptonic-Z+E_T^miss channel. This was interpreted in the literature in a simplified general gauge mediation model containing a gluino, a Higgsino next-to-lightest supersymmetric ...

  • Rapid mixing renders quantum dissipative systems stable 

    Lucia, Angelo; Cubitt, Toby S.; Michalakis, Spyridon; Perez-Garcia, David (APSPhysical Review A, 2015-04-09)
    The physics of many materials is modeled by quantum many-body systems with local interactions. If the model of the system is sensitive to noise from the environment, or small perturbations to the original interactions, ...

  • Post-inflationary non-Gaussianities on the cosmic microwave background 

    Su, Shi Chun (University of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsTrinity Hall, 2015-06-30)
    The cosmic microwave background (CMB) provides unprecedented details about the history of our universe and helps to establish the standard model in modern cosmology. With the ongoing and future CMB observations, higher ...

  • Unbounded number of channel uses may be required to detect quantum capacity 

    Cubitt, Toby; Elkouss, David; Matthews, William; Ozols, Maris; Perez-Garcia, David; Strelchuk, Sergii (NPGNature Communications, 2015-03-31)
    Transmitting data reliably over noisy communication channels is one of the most important applications of information theory, and is well understood for channels modelled by classical physics. However, when quantum effects ...

  • Stability of local quantum dissipative systems 

    Cubitt, Toby S.; Lucia, Angelo; Michalakis, Spyridon; Perez-Garcia, David (SpringerCommunications in Mathematical Physics, 2015-04-07)
    Open quantum systems weakly coupled to the environment are modeled by completely positive, trace preserving semigroups of linear maps. The generators of such evolutions are called Lindbladians. In the setting of ...

  • Plethora of transitions during breakup of liquid filaments 

    Castrejón-Pita, José Rafael; Castrejón-Pita, Alfonso Arturo; Thete, Sumeet Suresh; Sambath, Krishnaraj; Hutchings, Ian Michael; Hinch, John; Lister, John Ronald; Basaran, Osman A (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 ...

  • Stability analysis of matrix Wiener–Hopf factorization of Daniele–Khrapkov class and reliable approximate factorization 

    Kisil, Anastasia (Royal Society PublishingProceedings of the Royal Society of London A, 2015-05-06)
    This paper presents new stability results for matrix Wiener–Hopf factorization. The first part of the paper examines conditions for stability of Wiener–Hopf factorization in the Daniele–Khrapkov class. The second part of ...

  • The relationship between a strip Wiener--Hopf problem and a line Riemann--Hilbert problem 

    Kisil, Anastasia (OUPIMA Journal of Applied Mathematics, 2015-03-31)
    In this paper, the Wiener–Hopf factorization problem is presented in a unified framework with the Riemann–Hilbert factorization. This allows to establish the exact relationship between the two types of factorization. In ...

  • Liquid Ropes: A Geometrical Model for Thin Viscous Jet Instabilities 

    Brun, P-T; Audoly, Basile; Ribe, Neil M; Eaves, T S; Liste, John R (APSPhysical Review Letters, 2015-04-30)
    Thin, viscous fluid threads falling onto a moving belt behave in a way reminiscent of a sewing machine, generating a rich variety of periodic stitchlike patterns including meanders, W patterns, alternating loops, and ...

  • Lubricated viscous gravity currents 

    Kowal, Katarzyna N; Worster, Michael Grae (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 ...

  • Constrained dynamics and higher derivative systems in modified gravity 

    Chen, Tai-jun (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 

    Canizares, Priscilla; Field, Scott E.; Gair, Jonathan; Raymond, Vivien; Smith, Rory; Tiglio, Manuel (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, ...

  • Early-time free-surface flow driven by a deforming boundary 

    Brasz, C Frederik; Arnold, Craig B; Stone, Howard A; Lister, John Ronald (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 ...

  • Detecting pairwise correlations in spike trains: an objective comparison of methods and application to the study of retinal waves 

    Cutts, Catherine S; Eglen, Stephen John (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 ...

  • On High-Frequency Sound Generated by Gust-Aerofoil Interaction in Shear Flow 

    Ayton, Lorna Jane; Peake, Nigel (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 ...

  • Efficient mixing in stratified flows: experimental study of a Rayleigh-Taylor unstable interface within an otherwise stable stratification 

    Davies-Wykes, Megan S; Dalziel, Stuart Bruce (Cambridge University PressJournal of Fluid Mechanics, 2014-09-09)
    Boussinesq salt-water laboratory experiments of Rayleigh–Taylor instability (RTI) can achieve mixing efficiencies greater than 0.75 when the unstable interface is confined between two stable stratifications. This is much ...