Showing 2006Show all

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astro-ph2006★ 4 cited

Reinterpreting dark energy through backreaction: the minimally coupled morphon field

Julien Larena, Thomas Buchert, Jean-Michel Alimi

In the context of averaged cosmologies, the effective equations can be written in the form of "regional" Friedmannian equations with additional sources arising from the so-called b…

cond-mat.mes-hall2006★ 10 cited

The effect of sample properties on the electron velocity in quantum Hall bars

D. Eksi, E. Cicek, A. I. Mese +3

We report on our theoretical investigation of the effects of the confining potential profile and sample size on the electron velocity distribution in (narrow) quantum-Hall systems.…

cond-mat.stat-mech2006★ 9 cited

Generic principles of active transport

Mauro Mobilia, Tobias Reichenbach, Hauke Hinsch +2

Nonequilibrium collective motion is ubiquitous in nature and often results in a rich collection of intringuing phenomena, such as the formation of shocks or patterns, subdiffusive…

nucl-th2006★ 10 cited

Proton Threshold States in the 22Na(p,gamma)23Mg Reaction and Astrophysical Implications

H. Comisel, C. Hategan, G. Graw +1

Proton threshold states in 23Mg are important for the astrophysically relevant proton capture reaction 22Na(p,gamma)23Mg. In the indirect determination of the resonance strength of…

hep-th2006★ 7 cited

Effective action and heat kernel in a toy model of brane-induced gravity

A. O. Barvinsky, A. Yu. Kamenshchik, C. Kiefer +1

We apply a recently suggested technique of the Neumann-Dirichlet reduction to a toy model of brane-induced gravity for the calculation of its quantum one-loop effective action. Thi…

hep-ex2006★ 10 cited

Inclusive Production of Charged Hadrons in Photon-Photon Collisions

The OPAL collaboration

The inclusive production of charged hadrons in the collisions of quasi-real photons e+e- -> e+e- +X has been measured using the OPAL detector at LEP. The data were taken at e+e- ce…

cond-mat.mes-hall2006★ 43 cited

Phase lapses in transmission through interacting two-level quantum dots

C. Karrasch, T. Hecht, A. Weichselbaum +3

We investigate the appearance of pi lapses in the transmission phase theta of a two-level quantum dot with Coulomb interaction U. Using the numerical and functional renormalization…

hep-ex2006★ 16 cited

Measurement of the ppbar to ttbar production cross section at sqrt(s)=1.96 TeV in the fully hadronic decay channel

D0 Collaboration, V. Abazov

A measurement of the top quark pair production cross section in proton anti-proton collisions at an interaction energy of sqrt(s)=1.96 TeV is presented. This analysis uses 405 pb-1…

quant-ph2006★ 133 cited

Sequential Generation of Matrix-Product States in Cavity QED

C. Schoen, K. Hammerer, M. M. Wolf +2

We study the sequential generation of entangled photonic and atomic multi-qubit states in the realm of cavity QED. We extend the work of C. Schoen et al. [Phys. Rev. Lett. 95, 1105…

physics.acc-ph2006★ 204 cited

Design considerations for table-top, laser-based VUV and X-ray free electron lasers

F. Grüner, S. Becker, U. Schramm +12

A recent breakthrough in laser-plasma accelerators, based upon ultrashort high-intensity lasers, demonstrated the generation of quasi-monoenergetic GeV-electrons. With future Petaw…

hep-th2006★ 7 cited

Einstein-Riemann Gravity on Deformed Spaces

Julius Wess

A differential calculus, differential geometry and the E-R Gravity theory are studied on noncommutative spaces. Noncommutativity is formulated in the star product formalism. The ba…

hep-ex2006★ 13 cited

Search for techniparticles in e +jets events at D0

D0 Collaboration, V. Abazov

We search for the technicolor process ppbar -> rho_T/omega_T ->W+pi_T in events containing one electron and two jets, in data corresponding to an integrated luminosity of 390 pb-1,…

quant-ph2006★ 152 cited

Optimal control of a qubit coupled to a non-Markovian environment

P. Rebentrost, I. Serban, T. Schulte-Herbrueggen +1

A central challenge for implementing quantum computing in the solid state is decoupling the qubits from the intrinsic noise of the material. We investigate the implementation of qu…

quant-ph2006★ 123 cited

Introduction to decoherence theory

Klaus Hornberger

This is an introduction to the theory of decoherence with an emphasis on its microscopic origins and on a dynamic description. The text corresponds to a chapter soon to be publishe…

quant-ph2006★ 42 cited

Monitoring approach to open quantum dynamics using scattering theory

Klaus Hornberger

It is shown how S-matrix theory and the concept of continuous quantum measurements can be combined to yield Markovian master equations which describe the environmental interaction…

hep-th2006★ 44 cited

Black hole entropy functions and attractor equations

G. L. Cardoso, B. de Wit, S. Mahapatra

The entropy and the attractor equations for static extremal black hole solutions follow from a variational principle based on an entropy function. In the general case such an entro…

hep-th2006★ 99 cited

Glueballs vs. Gluinoballs: Fluctuation Spectra in Non-AdS/Non-CFT

Marcus Berg, Michael Haack, Wolfgang Muck

Building on earlier results on holographic bulk dynamics in confining gauge theories, we compute the spin-0 and spin-2 spectra of gauge theories dual to the non-singular Maldacena-…

hep-th2006★ 71 cited

Non-perturbative SQCD Superpotentials from String Instantons

Nikolas Akerblom, Ralph Blumenhagen, Dieter Lust +2

The Affleck-Dine-Seiberg instanton generated superpotential for SQCD with Nf=Nc-1 flavours is explicitly derived from a local model of engineered intersecting D6-branes with a sing…

hep-ex2006★ 9 cited

Search for single production of scalar leptoquarks in p\bar{p} collisions decaying into muons and quarks with the D0 detector

D0 Collaboration, V. Abazov

We report on a search for second generation leptoquarks LQ_2 which decay into a muon plus quark in p\bar{p} collisions at a center-of-mass energy of sqrt{s} = 1.96 TeV in the D0 de…

astro-ph2006★ 131 cited

Statistical properties of a sample of periodically variable B-type supergiants - Evidence for opacity-driven gravity-mode oscillations

K. Lefever, J. Puls, C. Aerts

We have studied a sample of 28 periodically variable B-type supergiants selected from the HIPPARCOS mission and 12 comparison stars covering the whole B-type spectral range. Our go…

cond-mat.mes-hall2006★ 55 cited

Coherence oscillations in dephasing by non-Gaussian shot noise

Izhar Neder, Florian Marquardt

A non-perturbative treatment is developed for the dephasing produced by the shot noise of a one- dimensional electron channel. It is applied to two systems: a charge qubit and the…

nucl-ex2006★ 18 cited

On the mixing strength in the two lowest 0- states in 208Pb

A. Heusler, G. Graw, R. Hertenberger +4

With a resolution of 3 keV, the two lowest 0- states in 208Pb are identified by measurements of the reaction 207Pb(d, p) with the Muenchen Q3D magnetic spectrograph in a region whe…

hep-th2006★ 5 cited

Open-closed string correspondence: D-brane decay in curved space

M. Baumgartl, I. Sachs

This paper analyzes the effect of curved closed string backgrounds on the stability of D-branes within boundary string field theory. We identify the non-local open string backgroun…

q-bio.PE2006

Approximating genealogies for partially linked neutral loci under a selective sweep

P. Pfaffelhuber, A. Studeny

Consider a genetic locus carrying a strongly beneficial allele which has recently fixed in a large population. As strongly beneficial alleles fix quickly, sequence diversity at par…