Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Graham, S D"'
Autor:
Hertkorn, J., Schmidt, J. -N., Guo, M., Böttcher, F., Ng, K. S. H., Graham, S. D., Uerlings, P., Langen, T., Zwierlein, M., Pfau, T.
Publikováno v:
Phys. Rev. Research 3, 033125 (2021)
Pattern formation is a ubiquitous phenomenon observed in nonlinear and out-of-equilibrium systems. In equilibrium, quantum ferrofluids formed from ultracold atoms were recently shown to spontaneously develop coherent density patterns, manifesting a s
Externí odkaz:
http://arxiv.org/abs/2103.13930
Autor:
Hertkorn, J., Schmidt, J. -N., Guo, M., Böttcher, F., Ng, K. S. H., Graham, S. D., Uerlings, P., Büchler, H. P., Langen, T., Zwierlein, M., Pfau, T.
Publikováno v:
Phys. Rev. Lett. 127, 155301 (2021)
We theoretically investigate the ground states and the spectrum of elementary excitations across the superfluid to droplet crystallization transition of an oblate dipolar Bose-Einstein condensate. We systematically identify regimes where spontaneous
Externí odkaz:
http://arxiv.org/abs/2103.09752
Autor:
Hertkorn, J., Schmidt, J. -N., Böttcher, F., Guo, M., Schmidt, M., Ng, K. S. H., Graham, S. D., Büchler, H. P., Langen, T., Zwierlein, M., Pfau, T.
Publikováno v:
Phys. Rev. X 11, 011037 (2021)
Phase transitions share the universal feature of enhanced fluctuations near the transition point. Here we show that density fluctuations reveal how a Bose-Einstein condensate of dipolar atoms spontaneously breaks its translation symmetry and enters t
Externí odkaz:
http://arxiv.org/abs/2009.08910
Publikováno v:
Phys. Rev. A 97, 051603 (2018)
We study the stability of two-domain spin structures in an ultra-cold gas of magnetically trapped $^{87}$Rb atoms above quantum degeneracy. Adding a small effective magnetic field gradient stabilizes the domains via coherent collective spin rotation
Externí odkaz:
http://arxiv.org/abs/1803.01096
Autor:
Graham, S. D., McGuirk, J. M.
Publikováno v:
Phys. Rev. A 95, 023602 (2017)
We present mean-field calculations of azimuthally averaged retarded dipole-dipole interactions in a Bose-Einstein condensate induced by a laser, at both long and short wavelengths. Our calculations demonstrate that dipole-dipole interactions become s
Externí odkaz:
http://arxiv.org/abs/1610.05477
Publikováno v:
Phys. Rev. Lett. 115, 075302 (2015)
Longitudinal spin diffusion of two pseudo-spin domains is studied in a trapped $^{87}$Rb sample above quantum degeneracy, and the effect of coherence in the domain wall on the dynamics of the system is investigated. Coherence in a domain wall leads t
Externí odkaz:
http://arxiv.org/abs/1501.03866
Autor:
Hamblin, C., Anderson, E. C., Mellor, P. S., Graham, S. D., Mertens, P. P. C., Burroughs, J. N.
Publikováno v:
Epidemiology and Infection, 1992 Feb 01. 108(1), 193-201.
Externí odkaz:
https://www.jstor.org/stable/3863990
Autor:
Hamblin, C., Mellor, P. S., Graham, S. D., Hooghuis, H., Montejano, R. C., Cubillo, M. A., Boned, J.
Publikováno v:
Epidemiology and Infection, 1991 Apr 01. 106(2), 365-371.
Externí odkaz:
https://www.jstor.org/stable/3863735
Publikováno v:
Epidemiology and Infection, 1990 Apr 01. 104(2), 303-312.
Externí odkaz:
https://www.jstor.org/stable/3863362
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