Browsing Τμήμα Φυσικής / Department of Physics by Subject "Hamiltonians"
Now showing items 1-7 of 7
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Article
Comparative study of perturbative methods for computing electron transfer tunneling matrix elements with a nonorthogonal basis set
(2006)The authors consider the problem of computing tunneling matrix elements for bridge-mediated electron transfer reactions using the Löwdin [J. Math. Phys. 3, 969 (1962)
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Article
Eight-Dimensional Quantum Hall Effect and "Octonions"
(2003)A generalization of the quantum Hall effect (QHE) where particles move in an eight-dimensional space under an SO(8) gauge field was constructed. A nonrelativistic Hamiltonian for particles moving on the S8 in the presence ...
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Article
Electron transfer through fluctuating bridges: On the validity of the superexchange mechanism and time-dependent tunneling matrix elements
(2001)An attempt is made to find the most general description of the superexchange mechanism that is valid for time-dependent donor-bridge-acceptor systems. Time-dependent electron-transfer probabilities that involve single MD ...
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Article
Fragment orbital based description of charge transfer in peptides including backbone orbitals
(2014)Charge transfer in peptides and proteins can occur on different pathways, depending on the energetic landscape as well as the coupling between the involved orbitals. Since details of the mechanism and pathways are difficult ...
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Article
Inelastic electron tunneling erases coupling-pathway interferences
(2004)Theoretical analysis of nonadiabatic electron-transfer reactions in molecules usually assumes that electron amplitude propagates coherently from the reductant to the oxidant via covalent and noncovalent coupling pathways. ...
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Conference Object
Tunable excitons in gated graphene systems
(SPIE, 2017)We develop a microscopic theory of a strong electromagnetic radiation interaction with bilayer graphene where an energy gap is opened by a static electric field perpendicular to graphene planes. We show that an adiabatic ...
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Article
Worldline path integral for the massive Dirac propagator: A four-dimensional approach
(1999)We simplify and generalize an approach proposed by Di Vecchia and Ravndal to describe a massive Dirac particle in external vector and scalar fields. Two different path integral representations for the propagator are derived ...