Physics thesis and dissertation collection: Recent submissions
Now showing items 1-20 of 1229
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Supernova light curve classification using attention and other techniques
(The University of Edinburgh, 2023-09-14)Even in the era of deep-learning the huge amount of astronomical data available has not yet allowed us to solve the problem of Supernova (SN) light curve classification. These explosive transients are photometrically ... -
New descriptions of boson plus multiple jet production at the Large Hadron Collider in the high energy limit
(The University of Edinburgh, 2023-09-13)The abundance of data collected by the Large Hadron Collider (LHC) and its increasing precision and centre-of-mass energy √ s have posed challenges to the theory community. In particular, such energy increase has been ... -
Gravitational waves as a probe for cosmology and non-standard physics
(The University of Edinburgh, 2023-09-12)The direct detection of Gravitational Waves (GWs) in 2015 revealed an entirely new way of studying the Universe and fundamental physics. This tremendous achievement, almost 100 years since the initial study of GWs by ... -
Amplitudes for black holes
(The University of Edinburgh, 2023-08-07)In recent years the double copy has provided a bridge between scattering amplitudes and gravitational interactions, allowing physicists to perform computations once unthinkable. Its strength relies on borrowing perturbative ... -
Calculating the Raman signal of solid hydrogen beyond perturbation theory
(The University of Edinburgh, 2023-06-30)The study of the solid phases of hydrogen has become an area of intense interest in recent decades. The majority of this work has been focused on obtaining a solid metallic phase, famously predicted to exist by Wigner ... -
Long period variables in the VVV data
(The University of Edinburgh, 2023-06-27)The variable stars known as Ogle Small Amplitude Red Giants (OSARGs) are potentially one of the most numerous types of variable star but relatively little is known about them. OSARGs and other Long Period Variables (LPVs) ... -
Neutron scattering studies of helicoidal magnet and 2D magnetic materials
(The University of Edinburgh, 2023-06-19)This thesis focuses on the use of complementary neutron scattering techniques to study both statics and dynamics of multiferroic MnSb₂O₆ and crystal and magnetic structures of 2D van der Waals magnetic materials. The ... -
Motile bacteria, active biohybrids and cellular physiology
(The University of Edinburgh, 2023-06-16)This thesis investigates bacterial motility from active matter and physiological perspectives using experiments and theoretical modelling. In the first part, I design and characterize a system made of motile Escherichia ... -
Heterogeneous growth and death of small bacterial populations in microfluidic droplets
(The University of Edinburgh, 2023-06-13)Antibiotic resistance is a major global health challenge, and there is still much to learn about how antibiotics work to inhibit the growth of bacterial populations. In many real infections, bacteria grow in small populations ... -
Constraining the top quark Yukawa coupling in in single-top Higgs production
(The University of Edinburgh, 2023-07-03)The work presented in this thesis consists of the first search for the associated production of a top quark and a Higgs boson (tH) with the ATLAS detector at the LHC. It also establishes an important contribution to the ... -
Search for right-handed W bosons and heavy neutrinos with the ATLAS experiment
(The University of Edinburgh, 2023-05-24)A search for heavy right-handed Majorana or Dirac neutrinos (NR) and heavy right-handed W bosons (WR) participating in the Keung-Senjanović (KS) process has been performed in events with a pair of energetic electrons or ... -
Adversarial neural networks for associated top pair and Higgs Boson production in the di-photon decay channel
(The University of Edinburgh, 2023-05-16)The main topic of this thesis is classification with Adversarial Neural Networks, which are for the first time used in an analysis targeting final states in which the Higgs boson decays to pairs of photons (H → γγ). The ... -
Coexistence of superconductivity and other electronic correlations in U2Ti and UTe2
(The University of Edinburgh, 2023-04-11)The coexistence of different electronic orders in condensed matter systems is an actively explored area of experimental and theoretical research. This is both to advance understanding and, since different phases, like ... -
Studying the soft anomalous dimension for massless multi-leg scattering at four loops
(The University of Edinburgh, 2023-04-11)Infrared (IR) singularities are a salient feature of gauge theory scattering amplitudes and their study is important from both practical and theoretical perspectives. IR singularities exponentiate in terms of the so ... -
Dynamics of chiral particles in viscous fluids
(The University of Edinburgh, 2023-03-29)Colloidal suspensions --- micron sized particles in a molecular solvent, typically water --- are found everywhere in nature, e.g. milk, and in artificial materials, e.g. paint. The dynamics of colloidal particles are ... -
Regulation of topological entanglement in ring polymers
(The University of Edinburgh, 2023-03-28)Entanglement abundance and complexity can be both beneficial and detrimental to the biological and mechanical function of polymers. In living organisms, for instance, DNA entanglement is so impactful that its proliferation ... -
Collective motion in microswimmer suspensions
(The University of Edinburgh, 2023-03-15)The main distinction of active matter from its passive counterpart is the ability to extract energy from the environment (consume food) and convert it into directed motion. One of the most striking consequences of this ... -
Stochastic effects in systems of aligning self-propelled particles
(The University of Edinburgh, 2023-03-07)Systems of self-propelled particles are often capable of exhibiting complex behaviours on a macroscopic scale with only simple interactions between the active microscopic agents. In systems where the particles interact ... -
Isospin-breaking corrections to light pseudoscalar leptonic decays rates
(The University of Edinburgh, 2023-02-13)The Cabibbo-Kobayashi-Maskawa (CKM) matrix is a 3x3 unitary matrix in the Standard Model of particle physics. It characterises the transmutation of quarks in flavor-changing weak decays. In flavor physics, a precise ... -
Gas in and around galaxies in the Simba simulations
(The University of Edinburgh, 2023-02-10)Galaxy evolution is an interplay of physical processes across a wide range of cosmological size scales, from star formation and black hole growth on sub-pc scales, to interactions with their environments on Mpc scales. The ...
