Showing 2012Show all

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math-ph2012★ 3 cited

Delay Equations of the Wheeler-Feynman Type

D. -A. Deckert, D. Dürr, N. Vona

We present an approximate model of Wheeler-Feynman electrodynamics for which uniqueness of solutions is proved. It is simple enough to be instructive but close enough to Wheeler-Fe…

hep-ex2012★ 36 cited

Multi-channel search for squarks and gluinos in sqrt(s)=7 TeV pp collisions with the ATLAS detector

ATLAS Collaboration

A search for supersymmetric particles in final states with zero, one, and two leptons, with and without jets identified as originating from b-quarks, in 4.7 fb-1 of sqrt(s)=7 TeV p…

physics.bio-ph2012

Imaging the noncentrosymmetric structural organisation of tissue with Interferometric Second Harmonic Generation microscopy

Maxime Rivard, Konstantin Popov, Mathieu Laliberte +7

We report the imaging of tendon, a connective tissue rich in collagen type I proteins, with Interferometric Second Harmonic Generation (I-SHG) microscopy. We observed that the nonc…

cond-mat.supr-con2012★ 19 cited

Structural and magnetic phase transitions in triclinic Ca10(FeAs)10(Pt3As8)

T. Stürzer, G. M. Friederichs, H. Luetkens +5

We report the structural and magnetic phase transitions of triclinic Ca10(FeAs)10(Pt3As8). High-resolution X-ray powder diffraction reveals splitting of the in-plane (a,b) lattice…

stat.ML2012

Automatic post-picking using MAPPOS improves particle image detection from Cryo-EM micrographs

Ramin Norousi, Stephan Wickles, Christoph Leidig +4

Cryo-electron microscopy (cryo-EM) studies using single particle reconstruction are extensively used to reveal structural information on macromolecular complexes. Aiming at the hig…

astro-ph.CO2012★ 229 cited

Theoretical Models of Dark Energy

Jaewon Yoo, Yuki Watanabe

Mounting observational data confirm that about 73% of the energy density consists of dark energy which is responsible for the current accelerated expansion of the Universe. We pres…

astro-ph.HE2012★ 134 cited

Bright radio emission from an ultraluminous stellar-mass microquasar in M31

Matthew J. Middleton, James C. A. Miller-Jones, Sera Markoff +34

A subset of ultraluminous X-ray sources (those with luminosities < 10^40 erg/s) are thought to be powered by the accretion of gas onto black holes with masses of ~5-20 M_solar, pro…

astro-ph.GA2012★ 14 cited

The Clump Mass Function of the Dense Clouds in the Carina Nebula Complex

Stephanie Pekruhl, Thomas Preibisch, Frederic Schuller +1

We want to characterize the properties of the cold dust clumps in the Carina Nebula Complex (CNC), which shows a very high level of massive star feedback. We derive the Clump Mass…

astro-ph.CO2012★ 98 cited

Planck Intermediate Results. XI: The gas content of dark matter halos: the Sunyaev-Zeldovich-stellar mass relation for locally brightest galaxies

Planck Collaboration, P. A. R. Ade, N. Aghanim +194

We present the scaling relation between Sunyaev-Zeldovich (SZ) signal and stellar mass for almost 260,000 locally brightest galaxies (LBGs) selected from the Sloan Digital Sky Surv…

astro-ph.CO2012★ 198 cited

CLASH: The enhanced lensing efficiency of the highly elongated merging cluster MACS J0416.1-2403

A. Zitrin, M. Meneghetti, K. Umetsu +21

We perform a strong-lensing analysis of the merging galaxy cluster MACS J0416.1-2403 (M0416; z=0.42) in recent CLASH/HST observations. We identify 70 new multiple images and candid…

astro-ph.SR2012★ 52 cited

Dead, Undead and Zombie Zones in Protostellar Disks as a Function of Stellar Mass

Subhanjoy Mohanty, Barbara Ercolano, Neal J. Turner

We investigate the viability of the magnetorotational instability (MRI) in accretion disks around both solar-type stars and very low mass stars. In particular, we determine the dis…

astro-ph.GA2012★ 113 cited

Limits on intermediate-mass black holes in six Galactic globular clusters with integral-field spectroscopy

Nora Lützgendorf, Markus Kissler-Patig, Karl Gebhardt +6

The formation of supermassive black holes at high redshift still remains a puzzle to astronomers. Their growth becomes reasonable only when starting from a massive seed black hole…

hep-th2012★ 51 cited

Black Holes and Quantumness on Macroscopic Scales

D. Flassig, A. Pritzel, N. Wintergerst

It has recently been suggested that black holes may be described as condensates of weakly interacting gravitons at a critical point, exhibiting strong quantum effects. In this pape…

astro-ph.SR2012★ 69 cited

Astrophysical tests of atomic data important for stellar Mg abundance determinations

Lyudmila Mashonkina

Magnesium abundances of cool stars with different metallicities are important for understanding the galactic chemical evolution. This study tests atomic data used in stellar magnes…

cond-mat.mes-hall2012★ 184 cited

Coherent control of a nanomechanical two-level system

Thomas Faust, Johannes Rieger, Maximilian J. Seitner +2

The Bloch sphere is a generic picture describing a coupled two-level system and the coherent dynamics of its superposition states under control of electromagnetic fields. It is com…

cond-mat.mes-hall2012★ 38 cited

Large nuclear spin polarization in gate-defined quantum dots using a single-domain nanomagnet

Gunnar Petersen, Eric A. Hoffmann, Dieter Schuh +3

The electron-nuclei (hyperfine) interaction is central to spin qubits in solid state systems. It can be a severe decoherence source but also allows dynamic access to the nuclear sp…

hep-ph2012★ 249 cited

Searching for WISPy Cold Dark Matter with a Dish Antenna

Dieter Horns, Joerg Jaeckel, Axel Lindner +3

The cold dark matter of the Universe may be comprised of very light and very weakly interacting particles, so-called WISPs. Two prominent examples are hidden photons and axion-like…

quant-ph2012★ 230 cited

Quantum simulation of open-system dynamical maps with trapped ions

P. Schindler, M. Müller, D. Nigg +7

Dynamical maps describe general transformations of the state of a physical system, and their iteration can be interpreted as generating a discrete time evolution. Prime examples in…

astro-ph.SR2012★ 39 cited

Is γ-ray emission from novae affected by interference effects in the 18F(p,α)15O reaction?

A. M. Laird, A. Parikh, A. St. J. Murphy +14

The 18F(p,α)15O reaction rate is crucial for constraining model predictions of the γ-ray observable radioisotope 18F produced in novae. The determination of this rate is challengin…

physics.ins-det2012★ 36 cited

DEPFET active pixel detectors for a future linear collider

O. Alonso, R. Casanova, A. Dieguez +84

The DEPFET collaboration develops highly granular, ultra-transparent active pixel detectors for high-performance vertex reconstruction at future collider experiments. The character…

hep-ex2012★ 14 cited

Measurement of the combined rapidity and dependence of dijet azimuthal decorrelations in collisions at TeV

D0 Collaboration

We present the first combined measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations, based on the recently proposed quantity . Th…

math.CO2012★ 23 cited

Going after the k-SAT Threshold

Amin Coja-Oghlan, Konstantinos Panagiotou

Random -SAT is the single most intensely studied example of a random constraint satisfaction problem. But despite substantial progress over the past decade, the threshold for th…

cond-mat.quant-gas2012★ 1k cited

Direct Measurement of the Zak phase in Topological Bloch Bands

Marcos Atala, Monika Aidelsburger, Julio T. Barreiro +4

Geometric phases that characterize the topological properties of Bloch bands play a fundamental role in the modern band theory of solids. Here we report on the direct measurement o…

cond-mat.quant-gas2012★ 124 cited

Interferometric approach to measuring band topology in 2D optical lattices

Dmitry A. Abanin, Takuya Kitagawa, Immanuel Bloch +1

Recently, optical lattices with non-zero Berry's phases of Bloch bands have been realized. New approaches for measuring Berry's phases and topological properties of bands with expe…