Essays about: "Lanczos method"
Found 5 essays containing the words Lanczos method.
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1. Quantum thermodynamics explorations with a Hubbard-Holstein dimer
University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenAbstract : The goal of this project is to characterize the quantum thermodynamics of a Hubbard-Holstein dimer. We explore how the standard formalism of quantum thermodynamics behaves in the context many-body physics. READ MORE
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2. HOW IMAGE DOWNSCALING AND JPEG COMPRESSION AFFECTS IMAGE CLASSIFICATION PERFORMANCE - An experimental study
University essay from Umeå universitet/Institutionen för datavetenskapAbstract : the quality of an image plays a role in how well it can be correctly classified by an image classifying neural network. Artifacts such as blur and noise reduces classifilability. At the same time it is often motivated to reduce file sizes of images which also tends to introduce artifacts and reduce their quality. READ MORE
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3. Optimizing the functionalities of a code for real time dynamics of finite systems
University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenAbstract : The many-body problem in quantum mechanics always presents new challenges and ways to discover new properties of existing materials. The difficulty (if not the impossibility) to solve the many-body problem analytically makes the numerical methods an appealing approach. READ MORE
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4. X-ray absorption spectroscopy by means of Lanczos-chain driven damped coupled cluster response theory
University essay from Institutionen för fysik, kemi och biologiAbstract : A novel method by which to calculate the near edge X-rayabsorption fine structure region of the X-ray absorption spectrum has been derived and implemented. By means of damped coupled cluster theory at coupled cluster levels CCS, CC2, CCSD and CCSDR(3), the spectra of neon and methane have been investigated. READ MORE
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5. Exact Diagonalization of Few-electron Quantum Dots
University essay from Institutionen för datavetenskap, fysik och matematik, DFMAbstract : We consider a system of few electrons trapped in a two-dimensional circularquantum dot with harmonic confinement and in the presence of ahomogeneous magnetic field, with focus on the role of e-e interaction. Byperforming the exact diagonalization of the Hamiltonian in second quantization,the low-lying energy levels for spin polarized system are obtained. READ MORE