Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Santos, F. E. P. dos"'
Publikováno v:
New J. Phys. 25 063015 (2023)
A key aspect of ultracold bosonic quantum gases in deep optical lattice potential wells is the realization of the strongly interacting Mott insulating phase. Many characteristics of this phase are well understood, however little is known about the ef
Externí odkaz:
http://arxiv.org/abs/2209.02435
Autor:
Madeira, L., Cidrim, A., Hemmerling, M., Caracanhas, M. A., Santos, F. E. A. dos, Bagnato, V. S.
Publikováno v:
AVS Quantum Sci. 2, 035901 (2020)
The field of quantum turbulence is related to the manifestation of turbulence in quantum fluids, such as liquid helium and ultracold gases. The concept of turbulence in quantum systems was conceived more than 70 years ago by Onsager and Feynman, but
Externí odkaz:
http://arxiv.org/abs/2008.11703
Publikováno v:
Entropy 22(9), 956 (2020)
Quantum turbulence deals with the phenomenon of turbulence in quantum fluids, such as superfluid helium and trapped Bose-Einstein condensates (BECs). Although much progress has been made in understanding quantum turbulence, several fundamental questi
Externí odkaz:
http://arxiv.org/abs/2007.15464
Autor:
Marino, Áttis V. M., Madeira, Lucas, Cidrim, André, Santos, F. E. A. dos, Bagnato, Vanderlei S.
Publikováno v:
Eur. Phys. J. Spec. Top. (2021)
The decay of multicharged vortices in trapped Bose-Einstein condensates may lead to a disordered vortex state consistent with the Vinen regime of turbulence, characterized by an absence of large-scale flow and an incompressible kinetic energy spectru
Externí odkaz:
http://arxiv.org/abs/2005.11286
Publikováno v:
Annual Review of Condensed Matter Physics, 11 (2020)
Turbulence is characterized by a large number of degrees of freedom, distributed over several length scales, that result into a disordered state of a fluid. The field of quantum turbulence deals with the manifestation of turbulence in quantum fluids,
Externí odkaz:
http://arxiv.org/abs/1903.12215
Publikováno v:
Phys. Rev. A 99, 063603 (2019)
The objective of this paper is the theoretical description of the Mott-insulator to superfluid quantum phase transition of a Bose gas in an optical lattice. In former works the Rayleigh-Schr\"odinger perturbation theory was used within a mean-field a
Externí odkaz:
http://arxiv.org/abs/1804.08689
In this work, we analyze the free expansion of Bose-Einstein condensates containing multicharged vortices. The atomic cloud is initially confined in a three-dimensional asymmetric harmonic trap. We apply both approximate variational solutions and num
Externí odkaz:
http://arxiv.org/abs/1710.01384
We have studied the contributions of Lorentz-violating CPT-odd and CPT-even nonminimal couplings to the energy spectrum of the mesonic hydrogen and the higher-order radiative corrections to the effective action of the photon sector of a Lorentz-viola
Externí odkaz:
http://arxiv.org/abs/1706.07117
{Following a successfully quantization scheme previously }{{% developed {\ in Ref. \cite{GUPTAEVEN} for a}} parity-even {gauge sector} {of the SME, we}} have established the Gupta-Bleuler {% quantization {of a} {\ parity-odd} and CPT-even }electrodyn
Externí odkaz:
http://arxiv.org/abs/1610.07189
Publikováno v:
Phys. Rev. A 93, 033651 (2016)
We propose a scheme for generating two-dimensional turbulence in harmonically trapped atomic condensates with the novelty of controlling the polarization (net rotation) of the turbulence. Our scheme is based on an initial giant (multicharged) vortex
Externí odkaz:
http://arxiv.org/abs/1507.03135