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We study antiferromagnetic, S51/2 Heisenberg models with nearestand second-neighbor interactions on the one-fifth depleted square lattice which describes the spin degrees of freedom in the spin-gap system CaV4O9 . The metaplaquette expansion for the triplet excitation spectrum is extended to fifth order, and the results are compared with experimental data on CaV4O9 . We attempt to locate the ph...

We prove a symmetry relationship between floating-strike and fixed-strike Asian options for assets driven by general Lévy processes using a change of numéraire and the characteristic triplet of the dual process. We apply the same technique to prove a similar relationship between floating-strike and fixed-strike lookback options.

Let {Xt} be a Lévy process which is reflected at 0 andK > 0. The reflected process {V K t } is constructed as V K t = V K 0 +Xt+Lt −Lt where {Lt} and {Lt } are the local times at 0 and K, respectively. We consider the loss rate ` , defined by ` = EπKL1 , where EπK is the expectation under the stationary measure πK . The main result of the paper is the identification of ` in terms of πK and the ...

The most promising scenarios of baryogenesis seems to be the one through lepton number violation. Lepton number violation through a Majarana mass of the right-handed neutrinos can generate a lepton asymmetry of the universe when the righthanded neutrinos decay. The left-handed neutrinos get small Majorana masses through see-saw mechanism in these models. A triplet higgs scalar violating lepton ...

The paper describes a sophisticated method of combining two MT systems to obtain a new translation pair. Instead of a simple pipe, we use a complex data structure to pass the data from the first MT system to the second one. Evaluation results are reported for the language triplet Czech-Slovenian-Slovak.

Directional qualities of spatial sound systems are studied with a binaural model of human direction perception. The evaluated spatial sound systems are pairand triplet-wise panning and firstand second-order Ambisonics.

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

The first system containing a luminescent Ir(m) cyclometallated species and a functionalized C60 unit has been prepared; triplet-triplet energy transfer from the Ir-based MLCT state to the C60 triplet state occurs, leading to phosphorescence (lifetime, 4.8 ms) of the derivatized-C60 at 77 K.

We present studies in bottomonium spectroscopy carried out with samples of (98±1) million Υ(2S) and (121±1) million Υ(3S) events recorded with the BaBar detector at the PEP-II asymmetric-energy ee collider at SLAC. Precise measurements of the branching fractions for χb1,2(1P, 2P ) → γΥ(1S) and χb1,2(2P ) → γΥ(2S) transitions, and searches for radiative decay to the ηb(1S) and ηb(2S) states are ...