59 citations · 442 across the 29 of their papers we have counts for
31 papers
Landau damping and mode-selective instability of a vortex gas
H. Terças, J. L. Figueiredo, J. T +1
We show that a collisionless point-vortex gas behaves as a genuine Vlasov system. Starting from the non-canonical Hamiltonian structure of point-vortex dynamics, we derive a reduce…
Resonant axion-plasmon conversion in neutron star magnetospheres
H. Terças, J. T. Mendonça, R. Bingham
Resonant axion-plasmon conversion in the magnetospheres of magnetars may substantially impact the landscape of dark-matter axion detection. This work explores how resonant axion-pl…
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…
Bose-Einstein condensation of photons in microcavity plasmas
J. L. Figuiredo, H. Terças, J. T. Mendonça
Bose--Einstein condensation of a finite number of photons propagating inside a plasma-filled microcavity is investigated. The nonzero chemical potential is provided by the electron…
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)…
Nonlinear density waves on graphene electron fluids
Pedro Cosme, Hugo Terças
In graphene, where the electron-electron scattering is dominant, electrons collectively act as a fluid. This hydrodynamic behaviour of charge carriers leads to exciting nonlinear p…
Hydrodynamical study of Terahertz emission in magnetized graphene field-effect transistors
Pedro Cosme, Hugo Terças
Several hydrodynamic descriptions of charge transport in graphene have been presented in the late years. We discuss a general hydrodynamic model governing the dynamics of a two-dim…
Quantum dynamics of Bose-polaron in a -dimensional Bose Einstein condensate
M. Miskeen Khan, H. Terças, J. T. Mendonça +4
We study the quantum motion of an impurity atom immersed in a Bose Einstein condensate in arbitrary dimension. The Bogoliubov excitations of the Bose Einstein condensate act as a b…
Bound-state spectrum of an impurity in a quantum vortex
João E. H. Braz, H. Terças
We consider the problem of finding the bound-state spectrum of an impurity immersed in a weakly interacting two-dimensional Bose-Einstein condensate supporting a single vortex. We…
Terahertz Laser Combs in Graphene Field-Effect Transistors
Pedro Cosme, Hugo Terças
Electrically injected terahertz (THz) radiation sources are extremely appealing given their versatility and miniaturization potential, opening the venue for integrated-circuit THz…
Axion production in unstable magnetized plasmas: an active source of dark-matter
J. T. Mendonça, J. D. Rodrigues, H. Terças
Axions, the hypothetical particles restoring the charge-parity symmetry in the strong sector of the Standard Model, and one of the most prone candidates for dark matter, are well-k…
B-field induced mixing between Langmuir waves and axions
Luca Visinelli, Hugo Terças
We present an analytic study of the dispersion relation for an isotropic magnetized plasma interacting with axions. We provide a quantitative picture of the electromagnetic plasma…
Electron trapping in freely expanding ultracold neutral plasmas
R. Ayllon, H. Terças, J. T. Mendonça
We report on the self-induced electron trapping occurring in a ultracold neutral plasma that is set to expand freely. At the early stages of the plasma, the ions are not thermalize…
Turbulence Excitation in Counter-Streaming Paraxial Superfluids of Light
João D. Rodrigues, José T. Mendonça, Hugo Terças
Turbulence in the quantum (superfluid) regime, similarly to its classical counterpart, continues to attract a great deal of scientific inquiry, due to the yet high number of unreso…
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…
Axion-plasmon polaritons in strongly magnetized plasmas
H. Terças, J. D. Rodrigues, J. T. Mendonça
Axions are hypothetical particles related to the violation of the charge-parity symmetry, being the most prone candidates for dark matter. Multiple attempts to prove their existenc…
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…
Photon Bubble Turbulence in Cold Atom Gases
R. Giampaoli, João D. Rodrigues, José A. Rodrigues +1
Turbulent radiation flow is commonplace in systems with strong, incoherent, light-matter interactions. In astrophysical contexts, photon bubble turbulence is considered a key mecha…
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…
Classical Rotons in Cold Atomic Traps
H. Terças, J. T. Mendonça, V. Guerra
We predict the emergence of a roton minimum in the dispersion relation of elementary excitations in cold atomic gases in the presence of diffusive light. In large magneto-topical t…