Now showing items 47-66 of 1345

• #### Band Jahn-Teller structural phase transition inﾠY2In ﻿

(2018)
The number of paramagnetic materials that undergo a structural phase transition is rather small, which can perhaps explain the limited understanding of the band Jahn-Teller mechanism responsible for this effect. Here we ...
• #### Beam Energy Dependence of Jet-Quenching Effects in $\mathrm{Au}+\mathrm{Au}$ Collisions at $\sqrt{{s}_{\mathrm{NN}}}=7.7$, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV ﻿

(2018)
We report measurements of the nuclear modification factor RCP for charged hadrons as well as identified π+(−), K+(−), and p(¯p) for Au+Au collision energies of √sNN=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe ...
• #### Beam Energy Dependence of Moments of the Net-Charge Multiplicity Distributions in Au+Au Collisions at RHIC ﻿

(2014)
We report the first measurements of the moments—mean (M), variance (σ2), skewness (S), and kurtosis (κ)—of the net-charge multiplicity distributions at midrapidity in Au+Au collisions at seven energies, ranging from √sNN=7.7 ...
• #### Beam energy dependence of rapidity-even dipolar flow in Au+Au collisions ﻿

(2018)
New measurements of directed flow for charged hadrons, characterized by the Fourier coefficient v1, are presented for transverse momenta pT, and centrality intervals in Au+Au collisions recorded by the STAR experiment for ...
• #### Beam-Energy Dependence of Charge Separation along the Magnetic Field in Au+Au Collisions at RHIC ﻿

(2014)
Local parity-odd domains are theorized to form inside a quark-gluon plasma which has been produced in high-energy heavy-ion collisions. The local parity-odd domains manifest themselves as charge separation along the magnetic ...
• #### Beam-Energy Dependence of Directed Flow of $\mathrm{\ensuremath{\Lambda}}$, $\overline{\mathrm{\ensuremath{\Lambda}}}$, ${K}^{\ifmmode\pm\else\textpm\fi{}}$, ${K}_{s}^{0}$, and $\ensuremath{\phi}$ in $\mathrm{Au}+\mathrm{Au}$ Collisions ﻿

(2018)
Rapidity-odd directed-flow measurements at midrapidity are presented for Λ, ¯Λ, K±, K0s, and ϕ at √sNN=7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV in Au+Au collisions recorded by the Solenoidal Tracker detector at the ...
• #### Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions ﻿

(2014)
Rapidity-odd directed flow (v1) measurements for charged pions, protons, and antiprotons near midrapidity (y=0) are reported in √sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV Au+Au collisions as recorded by the STAR ...
• #### Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector ﻿

(2015)
We present results of analyses of two-pion interferometry in Au+Au collisions at √sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV measured in the STAR detector as part of the BNL Relativistic Heavy Ion Collider Beam Energy ...
• #### Benchmark measurements and simulations of dose perturbations due to metallic spheres in proton beams ﻿

(2013)
Monte Carlo simulations are increasingly used for dose calculations in proton therapy due to its inherent accuracy. However, dosimetric deviations have been found using Monte Carlo code when high density materials are ...

(2006)
• #### Biomolecular dynamics: order–disorder transitions and energy landscapes ﻿

(2012)
While the energy landscape theory of protein folding is now a widely accepted view for understanding how relatively-weak molecular interactions lead to rapid and cooperative protein folding, such a framework must be extended ...
• #### Bose-Einstein Condensation of 84Sr ﻿

(2009)
We report Bose-Einstein condensation of Sr84 in an optical dipole trap. Efficient laser cooling on the narrow intercombination line and an ideal s-wave scattering length allow the creation of large condensates (N0∼3×105) ...
• #### Bose-Einstein condensation of 88Sr through sympathetic cooling with 87Sr ﻿

(2010-05-05)
We report Bose-Einstein condensation of Sr88, which has a small, negative s-wave scattering length (a88=−2a0). We overcome the poor evaporative cooling characteristics of this isotope by sympathetic cooling with Sr87 atoms. ...
• #### Bose-Einstein condensation of lithium ﻿

(1997)
Bose-Einstein condensation of 7Li has been studied in a magnetically trapped gas. Because of the effectively attractive interactions between 7Li atoms, many-body quantum theory predicts that the occupation number of the ...
• #### Bose-Einstein Condensation of Lithium: Observation of Limited Condensate Number ﻿

(1997)
Bose-Einstein condensation of 7Li has been studied in a magnetically trapped gas. Because of the effectively attractive interactions between 7Li atoms, many-body quantum theory predicts that the occupation number of the ...
• #### Bose-Einstein correlations in $pp, p\mathrm{Pb}$, and PbPb collisions at $\sqrt{{s}_{NN}}=0.9--7$ TeV ﻿

(2018)
Quantum-statistical (Bose-Einstein) two-particle correlations are measured in pp collisions at √s=0.9, 2.76, and 7 TeV, as well as in pPb and peripheral PbPb collisions at nucleon-nucleon center-of-mass energies of 5.02 ...
• #### Bose-Fermi mapping and a multibranch spin-chain model for strongly interacting quantum gases in one dimension: Dynamics and collective excitations ﻿

(2016)
We show that the wave function in one spatial sector x1<x2<⋯<xN (with xi being the coordinate of the ith particle) of a one-dimensional spinor gas with contact s-wave interaction, either bosonic or fermionic, can be mapped ...
• #### Bosonic molecules in a lattice: Unusual fluid phase from multichannel interactions ﻿

(2018)
We show that multichannel interactions significantly alter the phase diagram of ultracold bosonic molecules in an optical lattice. Most prominently, an unusual fluid region intervenes between the conventional superfluid ...
• #### Bridging quantum and classical plasmonics with a quantum-corrected model ﻿

(2012)
Electromagnetic coupling between plasmonic resonances in metallic nanoparticles allows for engineering of the optical response and generation of strong localized near-fields. Classical electrodynamics fails to describe ...
• #### Bright matter wave solitons in Bose–Einstein condensates ﻿

(2003)
We review recent experimental and theoretical work on the creation of bright matter wave solitons in Bose–Einstein condensates. In two recent experiments, solitons are formed from Bose–Einstein condensates of  7Li by ...