Results 141 to 150 of about 1,480,319 (221)

Controlling a magnetic Feshbach resonance with laser light

, 2009
The capability to tune the strength of the elastic interparticle interaction is crucial for many experiments with ultracold gases. Magnetic Feshbach resonances are a tool widely used for this purpose, but future experiments would benefit from additional ...
A Marte, Christoph Vo, Dominik M. Bauer, E Tiesinga, E Timmermans, FA van Abeelen, FA van Abeelen, FK Abdullaev, FK Fatemi, G Dong, G Smirne, G Thalhammer, Gerhard Rempe, I Carusotto, JL Bohn, K Enomoto, KM Jones, LJ Garay, M Junker, M Mackie, M Theis, Matthias Lettner, MI Rodas-Verde, PO Fedichev, S Dürr, S Dürr, S Inouye, SH Autler, Stephan Dürr, T Kraemer, T Volz, T Volz, X-L Deng, Y Castin   +33 more
core   +1 more source

Tuning Feshbach resonances in cold atomic gases with interchannel coupling [PDF]

, 2017
We show that the essential properties of a Feshbach resonance in cold atomic gases can be tuned by dressing the atomic states in different scattering channels through inter-channel couplings.
Tian-Shu Deng, Wei Zhang, W. Yi
semanticscholar   +1 more source

Creating Feshbach resonances for ultracold molecule formation with radio-frequency fields [PDF]

, 2016
We show that radio-frequency (rf) radiation may be used to create Feshbach resonances in ultracold gases of alkali-metal atoms at desired magnetic fields that are convenient for atomic cooling and degeneracy.
Daniel J. Owens, T. Xie, J. Hutson
semanticscholar   +1 more source

Exploring Atom-Ion Feshbach Resonances below the s-Wave Limit

Physical Review X
Hybrid systems of single, trapped ions embedded in quantum gases are a promising platform for quantum simulations and the study of long-range interactions in the ultracold regime.
Fabian Thielemann, Joachim Siemund, Daniel von Schoenfeld, Wei Wu, Pascal Weckesser, Krzysztof Jachymski, Thomas Walker, Tobias Schaetz   +7 more
doaj   +1 more source

Greatly enhanced absorption of non-resonant microwave fields by ultracold molecules near a Feshbach resonance

, 2010
We show that the probability of the collision-induced absorption of non-resonant microwave photons by a gas of ultracold molecules is dramatically enhanced near a Feshbach scattering resonance.
Alyabyshev, Sergey V., Krems, Roman V.
core   +1 more source

Time delays in ultracold atomic and molecular collisions

Physical Review Research, 2019
We study the behavior of the Eisenbud-Wigner collisional time delay around Feshbach resonances in cold and ultracold atomic and molecular collisions. We carry out coupled-channel scattering calculations on ultracold Rb and Cs collisions.
Matthew D. Frye, Jeremy M. Hutson
doaj   +1 more source

Vibrational Feshbach resonances in uracil and thymine

The Journal of Chemical Physics, 2006
Sharp peaks in the dissociative electron attachment (DEA) cross sections of uracil and thymine at energies below 3eV are assigned to vibrational Feshbach resonances (VFRs) arising from coupling between the dipole bound state and the temporary anion state associated with occupation of the lowest σ* orbital.
Burrow, Paul, Gallup, Gordon A., Scheer, Adam M., Denifl, G., Ptasinska, S., Märk, T., Scheier, P.   +6 more
openaire   +3 more sources

BEC-BCS crossover in an optical lattice

, 2006
We present the microscopic theory for the BEC-BCS crossover of an atomic Fermi gas in an optical lattice, showing that the Feshbach resonance underlying the crossover in principle induces strong multiband effects.
Arnaud Koetsier, C. A. Regal, D. B. M. Dickerscheid, H. T. C. Stoof   +3 more
core   +1 more source

Emergence of Chaotic Scattering in Ultracold Er and Dy

Physical Review X, 2015
We show that for ultracold magnetic lanthanide atoms chaotic scattering emerges due to a combination of anisotropic interaction potentials and Zeeman coupling under an external magnetic field.
T. Maier, H. Kadau, M. Schmitt, M. Wenzel, I. Ferrier-Barbut, T. Pfau, A. Frisch, S. Baier, K. Aikawa, L. Chomaz, M. J. Mark, F. Ferlaino, C. Makrides, E. Tiesinga, A. Petrov, S. Kotochigova   +15 more
doaj   +1 more source

Positron-Hydrogen Scattering, Annihilation, and Positronium Formation

Atoms, 2016
In previous papers (Bhatia A.K. 2007, 2012) a hybrid theory for the scattering of electrons from a hydrogenic system was developed and applied to calculate scattering phase shifts, Feshbach resonances, and photoabsorption processes.
Anand K. Bhatia
doaj   +1 more source