49,247 research outputs found
Stabilized parametric Cooper-pair pumping in a linear array of coupled Josephson junctions
We present an experimentally realizable stabilized charge pumping scheme in a
linear array of Cooper-pair boxes. The system design intrinsically protects the
pumping mechanism from severe errors, especially current reversal and
spontaneous charge excitation. The quantum Zeno effect is implemented to
further diminish pumping errors. The characteristics of this scheme are
considered from the perspective of improving the current standard. Such an
improvement bears relevence to the closure of the so-called measurement
triangle (see D. Averin [Nature 434, 285 (2005)]).Comment: Title changed, other corrections and modifications requested from
Phys. Rev. Let
Dispersive wave runup on non-uniform shores
Historically the finite volume methods have been developed for the numerical
integration of conservation laws. In this study we present some recent results
on the application of such schemes to dispersive PDEs. Namely, we solve
numerically a representative of Boussinesq type equations in view of important
applications to the coastal hydrodynamics. Numerical results of the runup of a
moderate wave onto a non-uniform beach are presented along with great lines of
the employed numerical method (see D. Dutykh et al. (2011) for more details).Comment: 8 pages, 6 figures, 18 references. This preprint is submitted to
FVCA6 conference proceedings. Other author papers can be downloaded at
http://www.lama.univ-savoie.fr/~dutykh
Faculty concert: a concert in celebration of the 200th birthday of Franz Schubert
This is the concert program of the Faculty Concert: A Concert in Celebration of the 200th Birthday of Franz Schubert performance on Tuesday, February 18, 1997 at 8:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue. Works performed were Adagio in E-flat major, D. 897 ("Notturno"), Der Fischer, D. 225, Selige Welt, D. 743, Auf dem See, D. 543, Der Jungling and der Quelle, D. 300, Wie Ulfru fischt, D. 881, Der Jungling am Bache, D. 638, Fischerweise, D. 881, Erlafsee, D. 586, Der Schiffer, D. 536, Auf dem Wasser zu Singen, D. 774, Der Fluss, D. 693, Die Forelle, D. 550, and Piano Trio in E-flat major, D. 929, all by Franz Schubert. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund
Early Music Series Concert: A Schubert Birthday Concert, January 27, 1997
This is the concert program of the Early Music Series Concert: A Schubert Birthday Concert on Monday, January 27, 1997 at 8:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue. Works performed were the following by Franz Schubert: Der Alpenjäger, Die Forelle, Der Wanderer, Der Atlas, Sonatina for Violin and Piano in D major, Op. 137 No. 1, D. 384, An die Musik, Gesänge des Harfners I, Gesänge des Harfners II, Rastlose Liebe, Gretchen am Spinnrade, Auf dem See, D. 543, Der Tod und das Mädchen, D. 531, Im Frühling, D. 882, Auf der Bruck, D. 853, Allegro in A minor ("Lebensstürme") for piano four hands, D. 947, Duet "Nur wer die Sehnsucht kennt," and Trio "Das Abendroth." Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund
Self-similar transmission properties of aperiodic Cantor potentials in gapped graphene
We investigate the transmission properties of quasiperiodic or aperiodic
structures based on graphene arranged according to the Cantor sequence. In
particular, we have found self-similar behaviour in the transmission spectra,
and most importantly, we have calculated the scalability of the spectra. To do
this, we implement and propose scaling rules for each one of the fundamental
parameters: generation number, height of the barriers and length of the system.
With this in mind we have been able to reproduce the reference transmission
spectrum, applying the appropriate scaling rule, by means of the scaled
transmission spectrum. These scaling rules are valid for both normal and
oblique incidence, and as far as we can see the basic ingredients to obtain
self-similar characteristics are: relativistic Dirac electrons, a self-similar
structure and the non-conservation of the pseudo-spin. This constitutes a
reduction of the number of conditions needed to observe self-similarity in
graphene-based structures, see D\'iaz-Guerrero et al. [D. S. D\'iaz-Guerrero,
L. M. Gaggero-Sager, I. Rodr\'iguez-Vargas, and G. G. Naumis,
arXiv:1503.03412v1, 2015]
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