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 6 of 6 for “"Bethe lattice"”.
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Εντοπισμός και γραμμική απόκριση ηλεκτρονίων στο άτακτο πλέγμα
… with diagonal disorder and furthermore that its lattice sites form a Bethe lattice. The special Bethe lattice topology allows for the calculation of the necessary probability distributions through closed integral expressions. Using these probability distributions we calculated the exact …
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Local Hamiltonians in quantum computation
… in the transverse field Ising model on the Bethe lattice. Third, I focus on locally constrained quantum problems Local Hamiltonian and Quantum Satisfiability and prove several new results about their complexity. Finally, I define a Hamiltonian Quantum Cellular Automaton, a continuous-time …
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Caging and Transport in Simple Disordered Systems
… the dynamics of site percolation on hypercubic lattices. Using theory and simulations, we obtain that both caging and subdiffusion scale logarithmically for dimension d ≥ d_u, the upper critical dimension of percolation. The theoretical derivation on Bethe lattice and a random graph confirm that …
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Nonzero temperatures and emergent disorder in spin liquids
… is made by making use of a mapping to the Bethe lattice, allowing predictions to be made about the experimentally measurable finite temperature dynamical structure factor. I then look at the propagation of quasiparticles in a different context: Classical spin ice. When spin ice is subjected …
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ΜΕΛΕΤΗ ΤΟΥ ΜΟΝΤΕΛΛΟΥ HUBBARD ΓΙΑ ΕΛΚΤΙΚΑ ΔΥΝΑΜΙΚΑ ΜΕΤΑΞΥ ΤΩΝ ΗΛΕΚΤΡΟΝΙΩΝ
… MANY-BODY RESULTS, FOR NUMBER OF ELECTRONS PER LATTICE SITE, TAKING ALL VALUES FROM 0 TO 2. WEFIND AN ENERGY GAP AT THE FERMI LEVEL AND A LOWER ENERGY THAN THAT OBTAINED BYTHE USUAL HARTREE-FOCK APPROXIMATION. FOR ELECTRON-ELECTRON INTERACTIONS BETWEEN ATOMIC AND METALLIC LIMITS (0<IUI/V,+ ), …
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ΟΛΙΚΗ ΚΑΙ ΕΠΙΦΑΝΕΙΑΚΗ ΠΥΚΝΟΤΗΤΑ ΚΑΤΑΣΤΑΣΕΩΝ ΣΤΟ ΑΤΑΚΤΟ ΠΛΕΓΜΑ ΤΟΥ BETHE
… ΗΛΕΚΤΡΟΝΙΚΩΝ ΚΑΤΑΣΤΑΣΕΩΝ ΣΤΟ ΑΤΑΚΤΟ ΠΛΕΓΜΑ ΤΟΥ BETHE, ΚΑΘΩΣ ΚΑΙ ΤΟΝ ΥΠΟΛΟΓΙΣΜΟ ΤΗΣ ΠΥΚΝΟΤΗΤΑΣ ΗΛΕΚΤΡΟΝΙΚΩΝ ΚΑΤΑΣΤΑΣΕΩΝ ΣΕ ΑΤΑΚΤΕΣ ΕΠΙΦΑΝΕΙΕΣ ΠΡΑΓΜΑΤΙΚΩΝ ΣΥΣΤΗΜΑΤΩΝ. ΓΙΑ ΤΟ ΣΚΟΠΟ ΑΥΤΟ ΑΠΟΔΕΙΚΝΥΟΥΜΕ ΟΤΙ Η ΜΕΘΟΔΟΣ ΤΗΣ ΑΠΑΡΙΘΜΗΣΗΣ ΤΩΝ ΡΙΖΩΝ (NODE COUNTING) ΙΣΧΥΕΙ ΓΙΑ ΤΟ ΠΛΕΓΜΑ ΤΟΥ BETHE. ΣΤΗ …