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of 36
pro vyhledávání: '"Reimann, Stephanie"'
Even though the one-dimensional contact interaction requires no regularization, renormalization methods have been shown to improve the convergence of numerical ab initio calculations considerably. In this work, we compare and contrast these methods:
Externí odkaz:
http://arxiv.org/abs/2408.10052
Autor:
Hertkorn, Jens, Stürmer, Philipp, Mukherjee, Koushik, Ng, Kevin S. H., Uerlings, Paul, Hellstern, Fiona, Lavoine, Lucas, Reimann, Stephanie, Pfau, Tilman, Klemt, Ralf
We theoretically investigate elementary excitations of dipolar quantum gases across the superfluid to supersolid phase transition in a toroidal trap. We show how decoupled first sound, second sound, and Higgs modes emerge by following their origin fr
Externí odkaz:
http://arxiv.org/abs/2404.12384
Ring-shaped superfluids with weak links provide a perfect environment for studying persistent currents and dynamic stirring protocols. Here, we investigate the effects of a weak-link system on dipolar supersolids. By calculating the ground state ener
Externí odkaz:
http://arxiv.org/abs/2305.02972
Autor:
Mukherjee, Koushik, Tengstrand, Mikael Nilsson, Cardinale, Tiziano Arnone, Reimann, Stephanie M.
We theoretically investigate a novel supersolid structure taking the form of stacked, disk-shaped superfluid droplets connected via a dilute superfluid, in an antidipolar condensate. A phase diagram is determined for varying the particle number and s
Externí odkaz:
http://arxiv.org/abs/2304.06456
We investigate a Bose-Bose mixture across the miscible-immiscible phase transition governed by quantum fluctuations in one dimension. We find the recently predicted so-called mixed bubbles as ground states close to the mean-field miscible-immiscible
Externí odkaz:
http://arxiv.org/abs/2207.11334
Autor:
Potts, Heidi, Josefi, Josef, Chen, I-Ju, Lehmann, Sebastian, Dick, Kimberly A., Leijnse, Martin, Reimann, Stephanie M., Bengtsson, Jakob, Thelander, Claes
Publikováno v:
Phys. Rev. B 104, 081409 (2021)
We engineer a system of two strongly confined quantum dots to gain reproducible electrostatic control of the spin at zero magnetic field. Coupling the dots in a tight ring-shaped potential with two tunnel barriers, we demonstrate that an electric fie
Externí odkaz:
http://arxiv.org/abs/2104.11561
Publikováno v:
Phys. Rev. A 103, 053302 (2021)
In this work, we present the study of the stationary structures and the breathing mode behavior of a two-dimensional self-bound binary Bose droplet. We employ an analytical approach using a variational ansatz with a super-Gaussian trial order paramet
Externí odkaz:
http://arxiv.org/abs/2012.09777
Autor:
Bayha, Luca, Holten, Marvin, Klemt, Ralf, Subramanian, Keerthan, Bjerlin, Johannes, Reimann, Stephanie M., Bruun, Georg M., Preiss, Philipp M., Jochim, Selim
Publikováno v:
Nature 587, 583-587 (2020)
Many-body physics describes phenomena which cannot be understood looking at a systems' constituents alone. Striking manifestations are broken symmetry, phase transitions, and collective excitations. Understanding how such collective behaviour emerges
Externí odkaz:
http://arxiv.org/abs/2004.14761
Publikováno v:
Phys. Rev. A 102, 043304 (2020)
Supersolidity - a coexistence of superfluidity and crystalline or amorphous density variations - has been vividly debated ever since its conjecture. While the initial focus was on helium-4, recent experiments uncovered supersolidity in ultra-cold dip
Externí odkaz:
http://arxiv.org/abs/2001.04751
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