Now showing items 1-20 of 926

  • Automatation of decomposed multi-loop Feynman-graphs 

    Rippon, Tom Owen (The University of Edinburgh, 2010-11-25)
    This thesis is an investigation into the link between momentum space Feynman graph integrals under a henge decomposition and parametric representation of Feynman graph integrals under a sector decomposition. A program ...
  • Time-dependent ionisation of metals in the intergalactic medium 

    Reynolds, Simon (The University of Edinburgh, 2010-11-25)
    This thesis presents the results of a study into modelling the ionisation of heavy elements in the intergalactic medium (IGM) by solving the time-dependent ionisation rate equations. An algorithm has been developed which ...
  • Nonlinear laser microscopy for the study of virus–host interactions 

    Robinson, Iain Thomas (The University of Edinburgh, 2010-11-25)
    Biomedical imaging is a key tool for the study of host-pathogen interactions. New techniques are enhancing the quality and flexibility of imaging systems, particularly as a result of developments in laser technologies. ...
  • Gravitational geomicrobiology: biofilms and their mineral interactions under terrestrial and altered gravity 

    Nicholson, Natasha Elizabeth (The University of Edinburgh, 2018-11-29)
    Experiments with microbial biofilms in microgravity and simulated microgravity have revealed altered growth kinetics, but geomicrobial biofilms have not yet been studied in low gravity environments. No characterisation ...
  • Testing gravity in the local universe 

    McManus, Ryan (The University of Edinburgh, 2018-11-29)
    General relativity (GR) has stood as the most accurate description of gravity for the last 100 years, weathering a barrage of rigorous tests. However, attempts to derive GR from a more fundamental theory or to capture ...
  • Experimental investigation of acoustic characteristics of radiation and playing gestures for lip-excited musical instruments 

    López-Carromero, Amaya (The University of Edinburgh, 2018-11-29)
    The geometrical characteristics of acoustical radiation are of great importance in instrument design and synthesis, and multiple simplified models have been developed in the past to describe them. In this work two ...
  • Rare radiative and semileptonic B meson decays 

    Gratrex, James (The University of Edinburgh, 2018-11-29)
    Recent results at the LHCb and B-factory experiments have suggested that rare processes in B →Vγ and B → V ℓ¯ℓ decays, where V is a vector meson, show some deviation from Standard Model predictions. Although these anomalies ...
  • Study of magnetic fluctuations and ordering in uranium compounds by heat capacity and neutron scattering measurements 

    Entwisle, Oliver John (The University of Edinburgh, 2018-11-29)
    URhGe is the first ferromagnet discovered that shows superconductivity at ambient pressure. It shows a rich temperature-magnetic field phase diagram with a re-emergence of superconductivity at high magnetic field where ...
  • Optical studies of diatomic molecules at extreme conditions 

    Afonina, Veronika Semenovna (The University of Edinburgh, 2018-11-29)
    The formidable progress achieved in the research at extreme conditions led to important discoveries of many unusual and interesting physical and chemical phenomena. Materials with high compressibility were and still are ...
  • Microbiology and the limits to life in deep salts 

    Payler, Samuel Joseph (The University of Edinburgh, 2018-07-02)
    Deep subsurface evaporites are common terrestrial deep subsurface environments found globally. These deposits are known to host communities of halophilic organisms, some of which have been suggested to be millions of ...
  • Ultra-red galaxies 

    Lewis, Alexander John Robert (The University of Edinburgh, 2018-11-29)
    Dusty star-forming galaxies (DSFGs) are highly luminous (LFIR ≳ 10¹² L⊙), very distant (z ≳ 2.5) and ≳ 10× rarer then ‘normal’, NIR-selected (BzK), star-forming galaxies. Capable of producing a Mstars ≳ 10¹¹-M⊙ galaxy after ...
  • Applications of branching processes to cancer evolution and initiation 

    Nicholson, Michael David (The University of Edinburgh, 2018-11-29)
    There is a growing appreciation for the insight mathematical models can yield on biological systems. In particular, due to the challenges inherent in experimental observation of disease progression, models describing the ...
  • Spectroscopic monitoring of long-term AGN transients: threading the micro-needle 

    Bruce, Alastair Graham (The University of Edinburgh, 2018-07-02)
    All active galactic nuclei (AGN) are known to vary in the rest-frame UV/optical. Typical variations are on the order of 30% or so and are stochastic in nature. Therefore, the discovery of a number of extreme AGN transients, ...
  • First investigation of electromagnetic coupling of the d*(2380) hexaquark 

    Kay, Stephen John Donald (The University of Edinburgh, 2018-11-29)
    This thesis presents the first measurement of the d*(2380) (hexaquark) electromagnetic coupling, extracted from the deuteron photodisintegration (~γd → d* →~np) reaction. The experiment was carried out at the Mainzer ...
  • Properties of the first galaxies 

    McLeod, Derek Johannes (The University of Edinburgh, 2017-07-10)
    With the Hubble Space Telescope and its near-infrared capabilities, it is now possible to probe deep into the epoch of reionization, improving our understanding of galaxy evolution through cosmic history. Whether it is ...
  • Neutron diffraction of hydrogen inclusion compounds under pressure 

    Donnelly, Mary-Ellen (The University of Edinburgh, 2017-07-10)
    When ice is compressed alongside a gas, crystalline 'host - guest' inclusion compounds known as gas clathrate hydrates form. These compounds are of interest not only for their environmental and possible technological ...
  • Theoretical considerations in the use of scalar-tensor theories of gravity in inflationary models 

    Edwards, David Craig (The University of Edinburgh, 2018-07-02)
    The inflationary paradigm is one which was designed to answer questions that arose from classical Hot Big Bang cosmology. The period of rapid expansion in the early Universe provides a mechanism to solve the flatness, ...
  • Role of active galactic nuclei in galaxy evolution 

    Nisbet, David Maltman (The University of Edinburgh, 2018-07-02)
    It is now believed that most, if not all, galaxies contain a supermassive black hole (SMBH) and that these play a crucial role in their host galaxies' evolution. Whilst accreting material, a SMBH (known as an active ...
  • First-principles studies of gas hydrates and clathrates under pressure 

    Teeratchanan, Pattanasak (The University of Edinburgh, 2018-11-29)
    Gas hydrates are molecular host-guest mixtures where guest gas species are encapsulated in host water networks. They play an important role in gas storage in aqueous environments at relatively low pressures, and their ...
  • Studies of dynamically and statically compressed antimony 

    Coleman, Amy Louise (The University of Edinburgh, 2018-07-02)
    Physics at extreme conditions is not a young field; there have been decades of developments that have allowed us to generate high-pressure and high-temperature conditions in a vast array of materials. Conventionally, ...