Výsledky vyhledávání

Report

Vortex-Antivortex Lattice in Ultra-Cold Fermi Gases

Autor: Botelho, S. S., de Melo, C. A. R. Sa

We discuss ultra-cold Fermi gases in two dimensions, which could be realized in a strongly confining one-dimensional optical lattice. We obtain the temperature versus effective interaction phase diagram for an s-wave superfluid and show that, below a

Externí odkaz: http://arxiv.org/abs/cond-mat/0509387

Zobrazit plný text záznamu

Report

Quantum Phase Transition in the BCS-to-BEC Evolution of p-wave Fermi Gases

Autor: Botelho, S. S., de Melo, C. A. R. Sa

Publikováno v: J. Low Temp. Phys. 140, 409 (2005)

We discuss the possibility of a quantum phase transition in ultra-cold spin-polarized Fermi gases which exhibit a p-wave Feshbach resonance. We show that when fermionic atoms form a condensate that can be externally tuned between the BCS and BEC limi

Externí odkaz: http://arxiv.org/abs/cond-mat/0504263

Zobrazit plný text záznamu

Report

The Lifshitz Transition in d-wave Superconductors

Autor: Botelho, S. S., de Melo, C. A. R. Sá

Publikováno v: Phys. Rev. B 71, 134507 (2005)

The BCS to BEC evolution has been recently the focus of studies in superconductors and cold atomic gases. For a d-wave system, we show that a Lifshitz transition occurs at a critical particle density which separates two topologically distinct phases:

Externí odkaz: http://arxiv.org/abs/cond-mat/0409368

Zobrazit plný text záznamu

Report

BCS to BEC Quantum Phase Transition in Spin Polarized Fermionic Gases

Autor: Botelho, S. S., de Melo, C. A. R. Sá

We discuss the possibility of a quantum phase transition in ultracold spin polarized fermionic gases which exhibit a p-wave Feshbach resonace. We show that when fermionic atoms form a condensate that can be externally tuned between the BCS and BEC li

Externí odkaz: http://arxiv.org/abs/cond-mat/0409357

Zobrazit plný text záznamu

Report

Static phase and dynamic scaling in a deposition model with an inactive species

Autor: Botelho, S. S., Reis, F. D. A. Aarao

We extend a previously proposed deposition model with two kinds of particles, considering the restricted solid-on-solid condition. The probability of incidence of particle C (A) is p (1-p). Aggregation is possible if the top of the column of incidenc

Externí odkaz: http://arxiv.org/abs/cond-mat/0112256

Zobrazit plný text záznamu