59 citations · 442 across the 29 of their papers we have counts for
13 papers · 1 filter
Quantum kinetic theory of light-matter interactions in degenerate plasmas
J. L. Figueiredo, J. T. Mendonça, H. Terças
A rigorous treatment of light-matter interactions typically requires an interacting quantum field theory. However, most applications of interest are handled using classical or semi…
Plasmon dispersion and Landau damping in the nonlinear quantum regime
F. Haas, J. T. Mendonça, H. Terças
We study the dispersion properties of electron plasma waves, or plasmons, which can be excited in quantum plasmas in the nonlinear regime. In order to describe nonlinear electron r…
Information compression at the turbulent-phase transition in cold atom gases
R. Giampaoli, J. L. Figueiredo, J. D. Rodrigues +3
The statistical properties of physical systems in thermal equilibrium are blatantly different from their far-from-equilibrium counterparts. In the latter, fluctuations often domina…
Hydrodynamic signatures and spectral properties of the quantum vortex
João E. H. Braz, P. Ribeiro, H. Terças
We characterize the low-lying excitations of a quantum vortex in a quasi-two-dimensional Bose-Einstein condensate (BEC) using the standard definition of the density of states (DOS)…
Quantum Landau damping in dipolar Bose-Einstein condensates
J. T. Mendonça, H. Terças, A. Gammal
We consider Landau damping of elementary excitations in Bose-Einstein condensates (BECs) with dipolar interactions. We discuss quantum and quasi-classical regimes of Landau damping…
Bose-Einstein condensation of photons in a plasma
J. T. Mendonça, H. Terças
We study the Bose-Einstein condensation of photons in a plasma, where we include the cases of both transverse photons and plasmons. We consider four-wave mixing processes of photon…
Bump-on-tail instability of twisted excitations in rotating cold atomic clouds
J. D. Rodrigues, H. Terças, J. T. Mendonça
We develop a kinetic theory for twisted density waves (phonons), carrying a finite amount of orbital angular momentum, in large magneto optical traps, where the collective processe…
Equation of state of a laser cooled gas
J. D. Rodrigues, J. A. Rodrigues, O. L. Moreira +2
We experimentally determine the equation of state of a laser cooled gas. By employing the Lane-Emden formalism, widely used in astrophysics, we derive the equilibrium atomic profil…
Phonon-polaritons in Bose-Einstein condensates induced by Casimir-Polder interaction with graphene
H. Terças, S. Ribeiro, J. T. Mendonça
We consider the mechanical coupling between a two-dimensional Bose-Einstein condensate with a graphene sheet via the vacuum fluctuations of the electromagnetic field which are at t…
Collective oscillations in ultracold atomic gases
J. T. Mendonça, R. Kaiser, H. Terças +1
Using both fluid and kinetic descriptions, where repulsive forces between near by atoms are included, we discuss the basic oscillations and waves of a cloud of ultra-cold atoms con…
Driven collective instabilities in magneto-optical traps: a fluid-dynamical approach
H. Terças, J. T. Mendonça, R. Kaiser
We present a theoretical model to describe an instability mechanism in ultra-cold gases, where long-range interactions are taken into account. Focusing on the nonlinear coupling be…
A phonon laser in ultra-cold matter
J. T. Mendonça, G. Brodin, M. Marklund +1
We show the possible excitation of a phonon laser instability in an ultra-cold atomic gas confined in a magneto-optical trap. Such an effect results from a negative Landau damping…
Two-stream instability in quasi-one-dimensional Bose-Einstein condensates
H. Terças, J. T. Mendonça, G. R. M. Robb
We apply a kinetic model to predict the existence of an instability mechanism in elongated Bose-Einstein condensates. Our kinetic description, based on the Wigner formalism, is emp…