Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Caracanhas, Monica A."'
Collective modes are coherent excitations in Bose-Einstein condensates (BECs), and their study provides insight into the macroscopic quantum phenomena that govern these systems. Collective mode frequencies can be used to probe the properties of BECs,
Externí odkaz:
http://arxiv.org/abs/2411.03939
Publikováno v:
Physics of Fluids 36, 067121 (2024)
We studied a rotating Bose-Einstein condensate confined in ring trap configurations that can be produced starting with a bubble trap confinement, approximated by a Mexican hat and shifted harmonic oscillator potentials. Using a variational technique
Externí odkaz:
http://arxiv.org/abs/2212.11027
Publikováno v:
Phys. Rev. A 105, 023307 (2022)
We study the dynamics of quantized superfluid vortices on axisymmetric compact surfaces with no holes, where the total vortex charge must vanish and the condition of irrotational flow forbids distributed vorticity. A conformal transformation from the
Externí odkaz:
http://arxiv.org/abs/2110.13560
Publikováno v:
Phys. Rev. A 105, 023307 (2022)
Motivated by ongoing experimental efforts to make closed Bose-Einstein condensate (BEC) shells in microgravity environments, this work studies the energy and dynamics of singly quantized vortices on a thin spherical superfluid shell, where the overal
Externí odkaz:
http://arxiv.org/abs/2101.06672
Publikováno v:
Phys. Rev. B 103, 174301 (2021)
The Caldeira-Leggett model of quantum Brownian motion is generalized using a generic velocity-dependent coupling. That leads to the description of a set of models able to capture Markovian and non-Markovian versions of Brownian and L\'evy statistics,
Externí odkaz:
http://arxiv.org/abs/2003.05304
Publikováno v:
Phys. Rev. B 101, 155120 (2020)
The formation of bound states between mobile impurity particles and fermionic atoms has been demonstrated in spin-polarized Fermi gases with attractive interspecies interaction. We investigate bound states of mobile impurities immersed in a two-dimen
Externí odkaz:
http://arxiv.org/abs/2001.00075
Publikováno v:
American Journal of Physics 87, 924 (2019)
We present a pedagogical introduction to Bose-Einstein condensation in traps with spherical symmetry, namely the spherical box and the thick shell, sometimes called bubble trap. In order to obtain the critical temperature for Bose-Einstein condensati
Externí odkaz:
http://arxiv.org/abs/1903.07995
Akademický článek
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Autor:
Tsatsos, Marios C., Tavares, Pedro E. S., Cidrim, Andre, Fritsch, Amilson R., Caracanhas, Monica A., Santos, F. Ednilson A. dos, Barenghi, Carlo F., Bagnato, Vanderlei S.
Publikováno v:
Physics Reports 622 (2016) 1-52
Turbulence, the complicated fluid behavior of nonlinear and statistical nature, arises in many physical systems across various disciplines, from tiny laboratory scales to geophysical and astrophysical ones. The notion of turbulence in the quantum wor
Externí odkaz:
http://arxiv.org/abs/1512.05262
Autor:
Caracanhas, Mônica, Fetter, Alexander L., Muniz, Sérgio R., Magalhães, K. M. F., Roati, G., Bagnato, G., Bagnato, Vanderlei S.
Publikováno v:
J Low Temp Phys (2012) 166: 49
In a recent study we demonstrated the emergence of turbulence in a trapped Bose-Einstein condensate of Rb-87 atoms. An intriguing observation in such a system is the behavior of the turbulent cloud during free expansion.The aspect ratio of the cloud
Externí odkaz:
http://arxiv.org/abs/1103.2039