Now showing items 871-890 of 2181

(1971)
• #### Level structures on Abelian varieties, Kodaira dimensions, and Lang's conjecture ﻿

(2018)
Assuming Lang's conjecture, we prove that for a prime p, number field K, and positive integer g, there is an integer r such that no principally polarized abelian variety A/K has full level-pr structure. To this end, we use ...
• #### Leveraging synthetic biology for tissue engineering applications ﻿

(2014)
Restoration of damaged tissues and organs requires precise control of cellular processes at the molecular level. Synthetic biology offers genetic tools that can be used to program the molecular biology of the cell, thereby ...
• #### Lg attenuation in northeast China using NECESSArray data ﻿

(2015)
The 127 station NorthEast China Extended SeiSmic Array (NECESSArray) provides large quantities of high quality seismic data in northeast China that allow us to resolve lateral variations of Lg Q or crustal attenuation at ...
• #### Lie algebraic similarity transformed Hamiltonians for lattice model systems ﻿

(2015)
We present a class of Lie algebraic similarity transformations generated by exponentials of two-body on-site Hermitian operators whose Hausdorff series can be summed exactly without truncation. The correlators are defined ...
• #### Lifetimes of ultra-long-range strontium Rydberg molecules ﻿

(2016)
The lifetimes of the lower-lying vibrational states of ultra-long-range strontium Rydberg molecules comprising one ground-state 5s2 1S0 atom and one Rydberg atom in the 5s38s3S1 state are reported. The molecules are created ...
• #### Lifetimes of ultralong-range Strontium Rydberg molecules in a dense BEC ﻿

(2017)
The lifetimes and decay channels of ultralong-range strontium Rydberg molecules that contain tens to hundreds of ground-state atoms within the electron orbit are examined by monitoring the time evolution of the Rydberg ...
• #### Lifetimes of ultralong-range strontium Rydberg molecules in a dense Bose-Einstein condensate ﻿

(2017)
The lifetimes and decay channels of ultralong-range Rydberg molecules created in a dense Bose-Einstein condensate are examined by monitoring the time evolution of the Rydberg population using field ionization. Studies of ...
• #### Lifetimes of ultralong-range strontium Rydberg molecules in cold dense gases ﻿

(2017)
The lifetimes and decay channels of ultralong-range Rydberg molecules created in a dense Bose-Einstein condensate (BEC) are examined by monitoring the time evolution of the Rydberg population using field ionization. The ...
• #### Ligand-Dependent Colloidal Stability Controls the Growth of Aluminum Nanocrystals ﻿

(2019)
The precise size- and shape-controlled synthesis of monodisperse Al nanocrystals remains an open challenge, limiting their utility for numerous applications that would take advantage of their size and shape-dependent optical ...
• #### Limit-periodic Schrödinger operators with Lipschitz continuous IDS ﻿

(2019)
We show that there exist limit-periodic Schrödinger operators such that the associated integrated density of states is Lipschitz continuous. These operators arise in the inverse spectral theoretic KAM approach of Pöschel.
• #### Limits on the Higgs boson lifetime and width from its decay to four charged leptons ﻿

(2015)
Constraints on the lifetime and width of the Higgs boson are obtained from H→ZZ→4ℓ events using data recorded by the CMS experiment during the LHC run 1 with an integrated luminosity of 5.1 and 19.7 fb−1 at a center-of-mass ...
• #### Linearized Jastrow-style fluctuations on spin-projected Hartree-Fock ﻿

(2013)
The accurate and efficient description of strong electronic correlations remains an important objective in electronic structure theory. Projected Hartree-Fock theory, where symmetries of the Hamiltonian are deliberately ...
• #### Linking phenological shifts to species interactions through size-mediated priority effects ﻿

(2014)
Interannual variation in seasonal weather patterns causes shifts in the relative timing of phenological events of species within communities, but we currently lack a mechanistic understanding of how these phenological ...
• #### Lithosphere versus asthenosphere mantle sources at the Big Pine Volcanic Field, California ﻿

(2012)
[1] Here we report the first measurements of the H2O content of magmas and mantle xenoliths from the Big Pine Volcanic Field (BPVF), California, in order to constrain the melting process in the mantle, and the role of ...
• #### Lithospheric expression of cenozoic subduction, mesozoic rifting and the Precambrian Shield in Venezuela ﻿

(2015)
We have combined surface wave tomography with Ps and Sp receiver-function images based on common-conversion-point (CCP) stacking to study the upper mantle velocity structure, particularly the lithosphere–asthenosphere ...
• #### Lithospheric structure of Iberia and Morocco using finite-frequency Rayleigh wave tomography from earthquakes and seismic ambient noise ﻿

(2017)
We present a new 3-D shear velocity model of the western Mediterranean from the Pyrenees, Spain, to the Atlas Mountains, Morocco, and the estimated crustal and lithospheric thickness. The velocity model shows different ...
• #### Local breaking of fourfold rotational symmetry by short-range magnetic order in heavily overdoped Ba(Fe1−xCux)2As2 ﻿

(2017)
We investigate Cu-doped Ba(Fe1−xCux)2As2 with transport, magnetic susceptibility, and elastic neutron scattering measurements. In the heavily Cu-doped regime where long-range stripe-type antiferromagnetic order in BaFe2As2 ...
• #### Local orthorhombic lattice distortions in the paramagnetic tetragonal phase of superconducting NaFe1−xNixAs ﻿

(2018)
Understanding the interplay between nematicity, magnetism and superconductivity is pivotal for elucidating the physics of iron-based superconductors. Here we use neutron scattering to probe magnetic and nematic orders ...
• #### Local Orthorhombicity in the Magnetic ${C}_{4}$ Phase of the Hole-Doped Iron-Arsenide Superconductor ${\mathrm{Sr}}_{1\ensuremath{-}x}{\mathrm{Na}}_{x}{\mathrm{Fe}}_{2}{\mathrm{As}}_{2}$ ﻿

(2017)
We report on temperature-dependent pair distribution function measurements of Sr1−xNaxFe2As2, an iron-based superconductor system that contains a magnetic phase with reentrant tetragonal symmetry, known as the magnetic C4 ...