Now showing items 71-80 of 272
Quantum mechanics in one band of a solid
(Elsevier, 1981-06-08)
The Bravais lattice operator and the quasimomentum are shown to form a complete set of conjugate operators in one band of a solid.
Exciton reactions in ultrathin molecular wires, filaments and pores: A case study of kinetics and self-ordering in low dimensions
(Elsevier, 1988-12-01)
When are molecular wires thin enough to show one-dimensional exciton kinetics? Cylindrical naphthalene wires ( 5-5000 nm radius) show a definite one- to three-dimensional transition (about 25 nm for triplet excitons at 4 ...
Neutrino magnetic moment in the SU(3)L x U(1) model
(Elsevier, 1989-07-13)
We discuss the prospect and difficulties of having a neutrino with a large magnetic moment and a naturally small mass in the SU(3)L x U(1) model.
Dissipative quantum tunneling: quantum Langevin equation approach
(Elsevier, 1988-03-21)
The quantum Langevin equation is used as the basis for a discussion of dissipative quantum tunneling. A general analysis, including strong coupling and non-markovian (memory) effects, is given for the case of tunneling ...
Debye screening
(Springer-Verlag, 1980-10)
The existence and exponential clustering of correlation functions for a classical coulomb system at low density or high temperature are proven using methods from constructive quantum field theory, the sine gordon transformation ...
New quantum oscillations in current driven small junctions
(Elsevier, 1985-04-08)
We propose a framework of a quantum mechanical description of current driven tunnel junctions. Based on this description we predict several new effects. These effects can be observed for kBT ET e2/C, where for a normal ...
Isothermal extrusion of non-dilute fiber suspensions
(Elsevier, 1987)
The extrusion of a rod-like fiber suspension is a Newtonian solvent, as a first step to the fast and inexpensive production of composite materials, is investigated. The analysis is carried out by means of an integral ...
Search for B-decay to Higgs bosons for Higgs boson masses between 50 and 210 MeV/c2
(Elsevier, 1989-10-05)
We use data from the Mark II experiment at PEP to search for the process B-->h0X for mh0 between 50 and 210 MeV/c2. No evidence for the Higgs boson is seen in this mass range. The limit obtained rules out the standard ...
The [beta] function of the two-dimensional non-linear [sigma] model
(Elsevier, 1984-11-22)
Improved MCRG methods are used to determine the [beta] function of the two-dimensional O(3) standard action [sigma] model. We argue that the previously observed anomalous behavior of the mass gap can be understood as a ...