Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Barberán, N."'
Autor:
Barberàn, N., Taron, J.
Publikováno v:
Phys. Rev. A 95, 023609 (2017)
The analysis of the quantum Hall response of a small system of ultracold bosonic atoms through the variation of its Hall resistivity against the applied gauge magnetic field, provides a powerful method to unmask its strongly correlated states in a qu
Externí odkaz:
http://arxiv.org/abs/1610.03293
Publikováno v:
Phys. Rev. A 87, 053611 (2013)
Interacting bosonic atoms under strong gauge fields undergo a series of phase transitions that take the cloud from a simple Bose-Einstein condensate all the way to a family of fractional-quantum-Hall-type states [M. Popp, B. Paredes, and J. I. Cirac,
Externí odkaz:
http://arxiv.org/abs/1303.0747
Publikováno v:
New J. Phys. 14, 055003 (2012)
We employ the exact diagonalization method to analyze the possibility of generating strongly correlated states in two-dimensional clouds of ultracold bosonic atoms which are subjected to a geometric gauge field created by coupling two internal atomic
Externí odkaz:
http://arxiv.org/abs/1111.0798
Autor:
Juliá-Díaz, B., Dagnino, D., Günter, K. J., Grass, T., Barberán, N., Lewenstein, M., Dalibard, J.
Publikováno v:
Phys. Rev. A 84, 053605 (2011)
Using exact diagonalization for a small system of cold bosonic atoms, we analyze the emergence of strongly correlated states in the presence of an artificial magnetic field. This gauge field is generated by a laser beam that couples two internal atom
Externí odkaz:
http://arxiv.org/abs/1105.5021
Publikováno v:
Phys. Rev. A 80, 053611 (2009)
We analyze vortex nucleation in mezoscopic 2D Bose superfluid in a rotating trap. We explicitly include a weakly anisotropic stirring potential, breaking thus explicitly the axial symmetry. As the rotation frequency passes the critical value $\Omega_
Externí odkaz:
http://arxiv.org/abs/0907.0564
Publikováno v:
Nature Physics 5, 431 (2009)
Mean-field methods are a very powerful tool for investigating weakly interacting many-body systems in many branches of physics. In particular, they describe with excellent accuracy trapped Bose-Einstein condensates. A generic, but difficult question
Externí odkaz:
http://arxiv.org/abs/0904.3065
Publikováno v:
Phys. Rev. A 76, 013625 (2007)
We study the signatures of rotational and phase symmetry breaking in small rotating clouds of trapped ultracold Bose atoms by looking at rigorously defined condensate wave function. Rotational symmetry breaking occurs in narrow frequency windows, whe
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610512
Publikováno v:
Phys.Rev. A73, 063623 (2006)
The characterization of small samples of cold bosonic atoms in rotating microtraps has recently attracted increasing interest due to the possibility to deal with a few number of particles per site in optical lattices. We analyze the evolution of grou
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603200
Publikováno v:
Phys. Rev. B 71, 121303(R) (2005)
The edge excitations and related topological orders of correlated states of a fast rotating Bose gas are studied. Using exact diagonalization of small systems, we compute the energies and number of edge excitations, as well as the boson occupancy nea
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408540
Autor:
Barberan, N.
We analyse the ground state properties of vertical double quantum dots in the lowest Landau level regime for filling factor \nu=2. This analysis follow two lines: on the one hand, we study the dispersion relation of different collective excitations a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0401079