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 52 for “"classical mechanics"”.
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Automated reasoning about classical mechanics
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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The Classical Limit of Quantum Theory
… treats of the relationship between quantum and classical mechanics. Both physicists and philosophers hold that quantum mechanics reduces to classical mechanics as ħ→0, or that classical mechanics is a special case of quantum mechanics in this limit. If one theory reduces to another, certain …
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Quantum mechanics on phase space : geometry and motion of the Wigner distribution
… the Wigner phase space formulation of quantum mechanics and compare it to the Hamiltonian picture of classical mechanics. In this comparison we focus on the differences in initial conditions available to each theory as well as the differences in dynamics. First we derive new necessary …
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Semiclassical Scattering for Two and Three Body Systems
Semiclassical scattering theory can be summarized as the study of connections between classical mechanics and quantum mechanics in the limit ℏ → 0 over the infinite time domain -∞ < t < ∞. After a brief discussion of Semiclassical Analysis and Scattering Theory we provide a rigorous result …
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Dimensional Inconsistencies in Orthogonal Transformations of Onsager's Phenomenological Equations
… patterns found. | Of all the areas of physics, classical mechanics is perhaps the easiest in which to see the relationship between a mathematical form and the physical occurrence. The acceleration of a car on a curve can be felt, the eye records the trajectory of a football in the air. Classical …
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Some Problems Connected with the Boltzmann Equation
… moving in space according to the laws of classical mechanics, and colliding in pairs from time to time. Assume that we can disregard all external effects, such as gravity, so that the motion is completely specified by giving the intermolecular forces.</p>
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Potential field theory and its applications to classical mechanical problems
… at nano-scales presents novel problems that classical mechanics cannot solve. Many engineers are uncomfortable designing at this level because classical or continuum mechanics does not apply and quantum mechanics is said to apply in a tangible way. There are unique opportunities to contribute …
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Characterizing Non-Covalent Interactions And Peptide Bond Formation With Electronic Structure Theory
The development and application of quantum mechanics has exploded in the past century. The rules of classical mechanics were found to be completely insufficient when applied to a universe that operates on the scale of atomic and subatomic particles. The advancement of quantum theory and computer …
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Electron capture and ionization dynamics in ion-Rydberg collisions
<p>"This thesis focuses on how classical mechanics can be used to help determine the collision dynamics of simple ion-atom collision systems. It was once thought that all particle collisions must be calculated via quantum mechanics in order to obtain meaningful results. The problem with quantum …
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The (Semi-)Classical Vibrational Echo
… of the A states of MbCO. By performing classical molecular dynamics simulations and using nonlinear optical response theory, we have identified the microscopic origins of these states based upon agreement between the experimental vibrational echo decays of the states and echo decays …
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A space-time approach to quantum mechanics
… attention to physics. We give applications to classical mechanics, quantum mechanics, ï¬ eld theory, curved manifolds, electromagnetism, and gravity as a gauge theory.
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Automatic analysis of problems in elementary mechanics
… analysis and solution of problems in elementary classical mechanics. Various elements of the solution process have been examined, with principal emphasis on a detailed procedure for equation generation and solution. Directed graphs are introduced to represent the relations which hold among the …
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An investigation of didactic energy transfer systems
… motor for learning about electromagnetism, classical mechanics and ballistics, and an end to end power plant energy conversion laboratory to introduce the topics of heat transfer and process efficiencies.
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Radiation emission and absorption in a hydrogen plasma of a laser engine
… and a rigorous approach is used to show that classical mechanics is quite appropriate to our study. As an application to a laser engine, we investigate the effects of the maximum temperature, the temperature gradient, the stretching of the plasma shape, the engine pressure, and the equivalent …
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A Development of a New Approach to the Static Axially Symmetric Einstein- Maxwell Field.
… of General CovarianceSpecial relativity and classical mechanics share the principle of invariance of the laws of physics in all inertial reference frames. They differ in that the postulate of the constancy of the velocity of light holds in special relativity. On the other hand, the premise of …
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Air Circulation Under Reduced Atmospheric Pressures
… <p>technology. Mathematical models, based on classical mechanics are created to enhance</p> <p>our control capabilities. Data is collected using various sensors placed inside the Low</p> <p>Pressure Test Bed (LPTB) Chamber at Kennedy Space Center. Data from those sensors</p> <p>became …
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Quantum detailed balance and duality
… This is in close analogy to detailed balance in classical mechanics described in terms of Markov chains. We show that this version of detailed balance may also be expressed in terms of quantum channels. acting on the states of the system by the Choi-Jamiolkowski duality. We then develop a more …
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To what extent is social media exposure correlated with financial performance for early stage digital consumer-facing startups?
… these growing startups have "momentums". In classical mechanics, momentum is the product between mass and velocity. When it comes to startups, we can see revenue and web traffic as the mass and unique page views, social presence and sentiment, page rank, inbound links... as velocity (cf. …
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Quantum-classical and semiclassical path integral methods for condensed phase dynamics
… bath which can be modeled by the less expensive classical dynamics, is a common strategy. Due to the decoherence nature of the bath on the system, the quantum dynamics of the system is often described by the density matrix. Path integral formulation of the density matrix provides a versatile tool …
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From data to dynamics: discovering governing equations from data
… and equations, such as Newton's second law for classical mechanics and the Navier-Stokes equations thence derived, have been responsible throughout history for numerous scientific breakthroughs in the physical and engineering sciences. There are many systems of interest for which large …
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