Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Secker T"'
We reveal a significant spin-exchange pathway in the three-body recombination process for ultracold lithium-7 atoms near a zero-crossing of the two-body scattering length. This newly discovered recombination pathway involves the exchange of spin betw
Externí odkaz:
http://arxiv.org/abs/2107.11269
Publikováno v:
Phys. Rev. A 104, 023321 (2021)
We study zero-energy collisions between three identical bosons with spin $f = 1$ interacting via pairwise potentials. We quantify the corresponding three-body scattering hypervolumes, which parametrize the effective three-body interaction strengths i
Externí odkaz:
http://arxiv.org/abs/2105.04497
Publikováno v:
Phys. Rev. A 103, 051303 (2021)
We study three-body collisions within ultracold mixtures with resonant interspecies $p$-wave interactions. Our results for the three-body effective interaction strength and decay rate are crucial towards understanding the stability and lifetime of th
Externí odkaz:
http://arxiv.org/abs/2012.10887
Publikováno v:
Phys. Rev. A 103, 052805 (2021)
We study Efimov physics of three identical bosons with pairwise multichannel interactions for Feshbach resonances of adjustable width. We find that the two-body multichannel nature of the interaction can affect the universal three-body spectrum, espe
Externí odkaz:
http://arxiv.org/abs/2011.14332
Publikováno v:
Phys. Rev. A 103, 022825 (2021)
We develop a full multichannel spin model in momentum space to investigate three-body recombination of identical alkali-metal atoms colliding in a magnetic field. The model combines the exact three-atom spin structure and realistic pairwise atom-atom
Externí odkaz:
http://arxiv.org/abs/2011.07943
Publikováno v:
Phys. Rev. A 103, 032817 (2021)
We investigate the prospects of combining a standard momentum space approach for ultracold three-body scattering with efficient coordinate space schemes to solve the underlying two-body problem. In many of those schemes the two-body problem is numeri
Externí odkaz:
http://arxiv.org/abs/2011.01707
Publikováno v:
Phys. Rev. Lett. 124, 143401 (2020)
We study the three-body scattering hypervolume $D$ of atoms whose scattering length $a$ is on the order of or smaller than the typical range $r_{\mathrm{vdW}}$ of the van der Waals attraction. We find that the real part of $D$ behaves universally in
Externí odkaz:
http://arxiv.org/abs/1912.10812
Publikováno v:
Phys. Rev. A 100, 050702 (2019)
The elastic scattering properties of three bosons at low energy enter the many-body description of ultracold Bose gases via the three-body scattering hypervolume $D$. We study this quantity for identical bosons that interact via a pairwise finite-ran
Externí odkaz:
http://arxiv.org/abs/1905.07205
We perform numerical simulations of trapped $^{171}$Yb$^+$ ions that are buffer gas cooled by a cold cloud of $^6$Li atoms. This species combination has been suggested to be the most promising for reaching the quantum regime of interacting atoms and
Externí odkaz:
http://arxiv.org/abs/1804.04486
Publikováno v:
Phys. Rev. Lett. 118, 263201 (2017)
We theoretically study trapped ions that are immersed in an ultracold gas of Rydberg-dressed atoms. By off-resonant coupling on a dipole-forbidden transition, the adiabatic atom-ion potential can be made repulsive. We study the energy exchange betwee
Externí odkaz:
http://arxiv.org/abs/1612.07112