Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"New Formalism"”.
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A New Formalism for Soft Collinear Effective Theory with Applications
In this thesis a new formalism for Soft Collinear Effective Theory (SCET) is developed and a new calculation relevant to high-precision studies of Quantum Chromodynamics (QCD) involving the summation of Sudakov double logarithms is presented. The new formalism of SCET possesses certain desirable …
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Formalism for the rapid evolution of primordial black holes
This thesis presents two different formalisms which can be used together to evolve a density perturbation produced during inflation forwards in time in the radiation-dominated era of the early universe. The first formalism, based on early work by Misner and Sharp, is for the evolution of a perfect …
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The classical theory of field evaporation
… by analysing the available experimental data. A new formalism `extended image-hump formalism' is developed and is used to devise several tests of whether the image-hump mechanism is operating. The general conclusion is that in most cases the Mueller mechanism is not operating and escape takes …
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Gluon propagator in classical color field of colliding hadrons and its implications for hadronic cross sections
… bound. To tame the rise, we have developed a new formalism for the interaction between QCD gluon and the classical color field of the colliding nucleons, and show how the gluon propagator is modified. The corresponding gauge invariance condition of the propagator is derived and shown to be …
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High precision calculation of generic extreme mass ratio inspirals
… which can be analyzed, we also introduce a new formalism for solving for the wave equation which describes radiative backreaction. This approach is based on a spectral decomposition of the radiation field originally introduced by Mano, Suzuki, and Takasugi (MST), and was then adapted for …
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Neutron Star Models in Alternative Theories of Gravity
… field at infinity. These quantities enter post-Newtonian equations of motion and gravitational waveforms of two body systems that are used for gravitational-wave parameter estimation, in order to test these theories against observations.</p><p>The construction of numerical models of neutron …
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Envisionment-Based Scheduling Using Time Interval Petri Networks: Representation, Inference, and Learning
… environment modeling is presented. Petri Nets formalism is known for its solid theoretical base, clear syntax and semantics, intuitive graphic representation, and native concurrency support. (2) The classical Petri Net model is extended in various ways to make it suitable for AI scheduling …
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Applications of coherent classical communication and the Schur transform to quantum information theory
Quantum mechanics has led not only to new physical theories, but also a new understanding of information and computation. Quantum information not only yields new methods for achieving classical tasks such as factoring and key distribution but also suggests a completely new set of quantum problems, …
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Metaformal Trends in Contemporary American Poetry
… Stephen Cushman’s earlier consideration of metaformalism in the work of A. R. Ammons and situates the metaformal in the lineage of Charles Olson’s influential essay on “Projective Verse.” I connect Ammons to Lyn Hejinian and explore how both extend this lineage through three-dimensional …
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Quantum Wiener chaos
… formulas. We show the applications of the new formalism by providing new proofs to the established theory of quantum stochastic calculus and new conditions for generating quantum stochastic cocycles and quantum stochastic evolutions. The corresponding quasifree case is also studied and the …
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A general approach to temporal reasoning about action and change
… the consideration and application of reasoning formalisms. There follows a discussion of the broad issues involved in modelling time and constructing a logical language. In general, worlds change over time. To model the dynamic world, the ability to predict what the state of the world will be …
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A sensitivity analysis of cyber contingency ranking within the SOCCA framework
… events within power infrastructures. Using a new formalism to model cyber-physical interconnections and by ranking contingencies based on impact and attack complexity, SOCCA presents system operators with a detailed vulnerability landscape of their networks. SOCCA’s contingency ranking …
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Symmetry-protected topological phases and quantum anomalies
… on these SPT phases, we discovered a new formalism of quantum anomalies, associated with discrete spacetime (such as time-reversal and spatial reflection) symmetries in particular, to classify distinct interacting topological phases. An example is the Z2 classification of the (2+1)d …
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Post-inflationary non-Gaussianities on the cosmic microwave background
… effects through the Boltzmann equation. The new formalism allows us to explicitly list out all the approximations implied in the canonical remapping approach. In particular, we quantify the correction of the CMB temperature power spectrum from the lens-lens couplings and confirm that the …
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Optimal Control Protocols for Quantum Memory Network Applications
… nuclear spin register. I will describe a general formalism to quantify and control the generation of en- tanglement in an arbitrarily large nuclear spin register. This formalism incorporates exactly the dynamics with unwanted nuclei, and quantifies the performance of entangling gates in the …
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Thermal particle production in the early universe
… plasma. In this thesis, a conceptually new approach to take gauge interactions consistently into account at leading order is presented. By considering an effective theory for a specific class of diagrams, it is relatively straightforward to derive an integral equation that sums …
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Probing the topology in band insulators
Topological Insulator is a newly found state of matter. Unlike phases described by the traditional Landau theory of symmetry breaking, the topological phases do not break symmetry, and it is not obvious in which measurable quantity will the topological index manifest itself. In this thesis, our …
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A Charcuterie Platter of QCD Matter
… states in nature called hadrons? I initiate a new formalism using Heavy Quark Effective Theory to study this dynamical process known as hadronization. I shed new light on the transverse momentum-dependent fragmentation process of heavy (charm and bottom) quarks by making use of the fact that …
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Symbolic planning for heterogeneous robots through composition of their motion description languages
This dissertation introduces a new formalism to define compositions of interacting heterogeneous systems, described by extended motion description languages (MDLes). The properties of the composition system are analyzed and an automatic process to generate sequential atom plan is introduced. The …
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