Browsing Physics and Astronomy by Title
Now showing items 571590 of 893

Quantum effects and nonlocality in strongly coupled plasmonic nanowire dimers
(2013)Using a fully quantum mechanical approach we study the optical response of a strongly coupled metallic nanowire dimer for variable separation widths of the junction between the nanowires. The translational invariance of ... 
Quantum jumps via spontaneous Raman scattering
(1987)A single laser, which is used to induce and detect spontaneous Raman transitions, can be used to observe quantum jumps in a single atom. The population dynamics of a particular system, consisting of two S1/22 groundstate ... 
Quantum mechanical effects in plasmonic structures with subnanometre gaps
(2016)Metallic structures with nanogap features have proven highly effective as building blocks for plasmonic systems, as they can provide a wide tuning range of operating frequencies and large nearfield enhancements. Recent ... 
Quantum Phases of the ShastrySutherland Kondo Lattice: Implications for the Global Phase Diagram of HeavyFermion Metals
(2014)Considerable recent theoretical and experimental effort has been devoted to the study of quantum criticality and novel phases of antiferromagnetic heavyfermion metals. In particular, quantum phase transitions have been ... 
Quantum plasmonics: Symmetrydependent plasmonmolecule coupling and quantized photoconductances
(2012)We investigate photoinduced electron transport through nanoparticle dimers connected by linear and ringlike molecules. The two model junctions exhibit similar absorption but distinct photoconductance. The linearchain junction ... 
Quantum quench phase diagrams of an swave BCSBEC condensate
(2015)We study the dynamic response of an swave BCSBEC (atomicmolecular) condensate to detuning quenches within the twochannel model beyond the weakcoupling BCS limit. At long times after the quench, the condensate ends up ... 
Quasiparticle coupled cluster theory for pairing interactions
(2014)We present an extension of the pair coupled cluster doubles (pCCD) method to quasiparticles and apply it to the attractive pairing Hamiltonian. Near the transition point where number symmetry gets spontaneously broken, ... 
Quasispecies theory for evolution of modularity
(2015)Biological systems are modular, and this modularity evolves over time and in different environments. A number of observations have been made of increased modularity in biological systems under increased environmental ... 
QuenchInduced Floquet TopologicalﾠpWave Superfluids
(2014)Ultracold atomic gases in two dimensions tuned close to a pwave Feshbach resonance were expected to exhibit topological superfluidity, but these were found to be experimentally unstable. We show that one can induce a ... 
Radiative Decay Rates in Hg+ from Observations of Quantum Jumps in a Single Ion
(1987)Radiative decay rates connecting the lowest four energy levels of Hg+198 have been derived solely from an analysis of the fluctuations (quantum jumps) of the laserinduced fluorescence of the 194nm first resonance transition ... 
Radiative lifetime of the 2P state of lithium
(1996)We determine the radial dipole moment between the 2S and 2P states of atomic lithium by analyzing the longrange vibrational eigenenergies of the singly excited diatomic molecule. The result can be expressed in terms of ... 
RangeSeparated Brueckner Coupled Cluster Doubles Theory
(2014)We introduce a rangeseparation approximation to coupled cluster doubles (CCD) theory that successfully overcomes limitations of regular CCD when applied to the uniform electron gas. We combine the shortrange ladder channel ... 
Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at √s=7 TeV
(2013)Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in protonproton collisions produced at the CERN LHC. The data, collected with the CMS detector at √s=7 TeV, ... 
Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton–proton collisions at √s=7 TeV
(2012)A study of dijet production in proton–proton collisions was performed at √s=7~TeV for jets with p T>35 GeV and y<4.7 using data collected with the CMS detector at the LHC in 2010. Events with at least one pair of jets ... 
RCME and AMIE studies of the Harang reversal formation during a steady magnetospheric convection event
(2014)This paper presents the results of a modeling study on the formation of the Harang reversal (HR) during a steady magnetospheric convection event. The Harang reversal is identified as the boundary of the northward and ... 
RCME simulation of a thin arc preceded by a northsouthaligned auroral streamer
(2014)The Time History of Events and Macroscale Interactions during Substorms (THEMIS) allsky imager data have recently revealed a repeatable sequence that occurs during many auroral substorms, in which a newly formed thin arc ... 
RCME simulation of bimodal transport in the plasma sheet
(2014)Plasma sheet transport is bimodal, consisting of both largescale adiabatic convection and intermittent bursty flows in both earthward and tailward directions. We present two comparison simulations with the Rice Convection ... 
Realization of a measurement of a ‘‘weak value’’
(1991)We present the first realization of a measurement of a ‘‘weak value,’’ a concept recently introduced by Aharonov, Albert, and Vaidman (AAV). Our experiment uses a birefringent crystal to separate the two linearpolarization ... 
Recoupling the singlet and tripletpairing channels in singlereference coupled cluster theory
(2016)It is well known that singlereference coupled cluster theory truncated to low orders of excitations gives the right answer for the right reason when systems are dominated by dynamical or weak correlation. Static or strong ... 
Renormalized energies of superfluorescent bursts from an electronhole magnetoplasma with high gain in InxGa1−xAs quantum wells
(2013)We study light emission properties of a populationinverted 2D electronhole plasma in a quantizing magnetic field. We observe a series of superfluorescent (SF) bursts, discrete both in time and energy, corresponding to the ...