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 5 of 5 for “"pair-approximation"”.
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Graph-theoretic Approach To Modeling Propagation And Control Of Network Worms
… real-world communication networks. The proposed pair-approximation model uses the information about the network structure--order, size, degree distribution, and transitivity. The empirical study of propagation on large scale-free graphs is in agreement with the theoretical analysis of the …
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Ground state perturbation theory for the many electron system in a static lattice: some plasmon properties of insulators
… energies and lifetimes are calculated in the pair approximation for several insulators.
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I. Kinetic Modeling of Surface Reactions II. Computational Design of Organic Semiconductors
… of reactants, we propose the half heterogeneous pair approximation (HHPA). Combining the intuitions of the mean-field steady state (MFSS) method and the pair approximation (PA), we consider representative pairs of sites in a self-consistent bath of the average pairwise correlation. Preaveraging …
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Towards an Improved Method for the Prediction of Linear Response Properties of Small Organic Molecules
… doubles (LR-CCSD) calculation via a perturbed pair natural orbital (PNO++) local correlation approach which uses an orbital space created using a perturbed density matrix. We find that by creating a "combined PNO++" space, incorporating a set of orbitals from the unperturbed pair natural …
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Decoherence and Dynamical Decoupling in Solid-State Spin Qubits
… interaction induced flip-flops of nuclear spin pairs. The qubit spin dephasing due to this random magnetic field depends intricately on the quantum dynamics of the nuclear spin bath, making the coupled decoherence problem difficult to solve. We provide a formally exact solution of this …