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Physics

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Displaying 801 - 825 of 4556

Structure and Dynamics of Star Polymer Films from Coarse-Grained Molecular Simulations

October 5, 2021
Author(s)
Jack F. Douglas, Wengang Zhang, Francis W. Starr, Alexandros Chremos
We quantify the structure and dynamics in molecular simulations of star polymer films of varying arm mass Ma and number of star arms f on a supporting solid substrate with an attractive interaction and compare to the corresponding properties of thin films

Three-dimensional dipolar thermalization in a reactive molecular gas with resonant shielding

October 1, 2021
Author(s)
Jun-Ru Li, William Tobias, Kyle Matsuda, Calder Miller, Giacomo Valtolina, Luigi De Marco, Rueben Wang, John Bohn, Goulven Quemener, Jun Ye
We demonstrate suppression of the reactive loss in a gas of ultracold 40K 87Rb molecules in a three-dimensional geometry. The electric field-induced collisional shielding suppresses loss by two orders of magnitude while preserving elastic, long-range

DETERMINATION OF DISTORTION CORRECTIONS FOR A FIXED LENGTH OPTICAL CAVITY PRESSURE STANDARD

September 30, 2021
Author(s)
Jacob Edmond Ricker, Jay H. Hendricks, Kevin O. Douglass, Sarah White, Sergei Syssoev
Optical gas refractometry has enabled new pressure standards to be developed based on a dual Fixed Length Optical Cavity (FLOC) system. NIST in partnership with MKS Instruments has created a portable FLOC pressure standard based gas refractivity. A key

High-Precision Hy-CI and E-Hy-CI studies of Atomic and Molecular Properties

September 29, 2021
Author(s)
James S. Sims, Maria Ruiz, Bholanath Padhy
This review presents a survey of the most important achievements in atomic and molecular calculations obtained with the Hylleraas-configuration interaction method (Hy-CI) and its extension the exponentially correlated Hylleraas-configuration interaction

Collective P-Wave Orbital Dynamics of Ultracold Fermions

September 28, 2021
Author(s)
Mikhail Mamaev, Peiru He, Thomas Bilitewski, Vijin Venu, Joseph Thywissen, Ana Maria Rey
We introduce a protocol to observe p-wave interactions in ultracold fermionic atoms loaded in a 3D optical lattice. Our scheme uses specific motionally excited band states to form an orbital subspace immune to band relaxation. A laser dressing is applied

Continuous radio-frequency electric-field detection through adjacent Rydberg resonance tuning

September 24, 2021
Author(s)
MATTHEW SIMONS, Aly Artusio-Glimpse, chris holloway, Eric Imhof, Steven Jefferts, Robert Wyllie, Brian Sawyer, Thad Walker
We demonstrate the use of multiple atomic-level Rydberg-atom schemes for continuous frequency detection of radio-frequency (RF) fields. Resonant detection of RF fields by electromagnetically induced transparency and Autler-Townes (AT) splitting in Rydberg
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