2.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- V. Konotop2 profiles96 · h 53
- Rui Santos55 · h 38
- P. Ferreira3 profiles39 · h 27
- M. M. Telo da Gama2 profiles33 · h 25
- Y. Kartashov28 · h 54
- D. Zezyulin26 · h 23
- N. Araújo2 profiles22 · h 21
- M. Mühlleitner16 · h 52
- J. M. Tavares14 · h 23
- L. Torner13 · h 65
- M. Tasinkevych2 profiles13 · h 28
- J. P. Silva2 profiles12 · h 30
- University of LisbonPT321 papers
- Instituto Politécnico de LisboaPT99 papers
- Institute of Photonic SciencesES24 papers
- Universidade Federal do CearáBR23 papers
- University of MinhoPT22 papers
- Universitat Politècnica de CatalunyaES21 papers
- ETH ZurichCH20 papers
- Institute of SpectroscopyRU19 papers
- Instituto Superior TécnicoPT19 papers
- Centre National de la Recherche ScientifiqueFR17 papers
- Karlsruhe Institute of TechnologyDE17 papers
- University of AveiroPT16 papers
31 papers · 1 filter
Designing lasing and perfectly absorbing potentials
Vladimir V. Konotop, Evgeny Lakshtanov, Boris Vainberg
Existence of a spectral singularity (SS) in the spectrum of {a Schrödinger operator with} a non-Hermitian potential requires exact matching of parameters of the potential. We provi…
Spectral singularities of odd--symmetric potential
Vladimir V. Konotop, Dmitry A. Zezyulin
We describe one-dimensional stationary scattering of a two-component wave field by a non-Hermitian matrix potential which features odd- symmetry, i.e., symmetry with $(PT)^2=-1…
Multiple timescale contact charging
T. Shinbrot, B. Ferdowsi, S. Sundaresan +1
Contact charging between insulators is one of the most basic, yet least well understood, of physical processes. For example we have no clear theory for how insulators recruit enoug…
Coherent perfect absorber and laser for nonlinear waves in optical waveguide arrays
Dmitry A. Zezyulin, Herwig Ott, Vladimir V. Konotop
A localized non-Hermitian potential can operate as a coherent perfect absorber or as a laser for nonlinear waves. The effect is illustrated for an array of optical waveguides, with…
One-loop contribution to dark matter-nucleon scattering in the pseudoscalar dark matter model
Duarte Azevedo, Mateusz Duch, Bohdan Grzadkowski +3
Recent dark matter (DM) direct searches place very stringent constraints on the possible DM candidates proposed in extensions of the Standard Model. There are however models where…
Fundraising and vote distribution: a non-equilibrium statistical approach
H. P. M. Melo, N. A. M. Araujo, J. S. Andrade
The number of votes correlates strongly with the money spent in a campaign, but the relation between the two is not straightforward. Among other factors, the output of a ballot dep…
Infinite-dimensional meta-conformal Lie algebras in one and two spatial dimensions
Malte Henkel, Stoimen Stoimenov
Meta-conformal transformations are constructed as sets of time-space transformations which are not angle-preserving but contain time- and space translations, time-space dilatations…
Many-body effects in (p,pN) reactions within a unified approach
R. Crespo, A. Arriaga, R. B. Wiringa +3
We study knockout reactions with proton probes within a theoretical framework where {\it ab initio} Quantum Monte Carlo wave functions are combined with the Faddeev/Alt-Grassberger…
Axiomatic construction of quantum Langevin equations
Rúbia Araújo, Sascha Wald, Malte Henkel
A phenomenological construction of quantum Langevin equations, based on the physical criteria of (i) the canonical equal-time commutators, (ii) the Kubo formula, (iii) the virial t…
Pseudoscalar decays to gauge bosons at the LHC and at a future 100 TeV collider
Abdesslam Arhrib, Rachid Benbrik, Jaouad El Falaki +2
We discuss the search for a CP-odd scalar decaying into gauge bosons in the framework of a CP-conserving two-Higgs doublet model (2HDM) and of a 2HDM extended with a vector-like qu…
Coherent perfect absorption of nonlinear matter waves
Andreas Müllers, Bodhaditya Santra, Christian Baals +6
Coherent perfect absorption is the complete extinction of incoming radiation by a complex potential in a physical system supporting wave propagation. The concept was proven for lin…
Jamming and percolation properties of random sequential adsorption with relaxation
Sumanta Kundu, Nuno A. M. Araújo, S. S. Manna
The random sequential adsorption (RSA) model is a classical model in Statistical Physics for adsorption on two-dimensional surfaces. Objects are deposited sequentially at random an…
Spin-orbit coupled soliton in a random potential
Sh. Mardonov, V. V. Konotop, B. A. Malomed +2
We investigate theoretically the dynamics of a spin-orbit coupled soliton formed by a self- interacting Bose-Einstein condensate immersed in a random potential, in the presence of…
Mechanical equilibrium of aggregates of dielectric spheres
A. F. V. Matias, T. Shinbrot, N. A. M. Araujo
Industrial as well as natural aggregation of fine particles is believed to be associated with electrostatics. Yet like charges repel, so it is unclear how similarly treated particl…
Route to chaos in a coupled microresonator system with gain and loss
Krzysztof Zegadlo, Nguyen Viet Hung, Vladimir V. Konotop +2
We consider chaotic dynamics of a system of two coupled ring resonators with a linear gain and a nonlinear absorption. Such a structure can be implemented in various settings inclu…
Testing scalar versus vector dark matter
Duarte Azevedo, Mateusz Duch, Bohdan Grzadkowski +3
We investigate and compare two simple models of dark matter (DM): a vector and a scalar DM model. Both models require the presence of two physical Higgs bosons and whic…
Models with Extended Higgs Sectors at Future Colliders
Duarte Azevedo, Pedro Ferreira, M. Margarete Mühlleitner +2
We discuss the phenomenology of several Beyond the Standard Model (SM) extensions that include extended Higgs sectors. The models discussed are: the SM extended by a complex single…
Electroweak vacuum lifetime in two Higgs doublet models
V. Branchina, F. Contino, P. M. Ferreira
We study the stability of neutral electroweak vacua in two Higgs doublet models, and calculate the lifetime of these states when the parameters are such that they are false vacua.…
CP in the dark
Duarte Azevedo, P. M. Ferreira, M. Margarete Muhlleitner +3
We build a model containing two scalar doublets and a scalar singlet with a specific discrete symmetry. After spontaneous symmetry breaking, the model has Standard Model-like pheno…
Dynamical demixing of a binary mixture under sedimentation
A. S. Nunes, R. C. V. Coelho, V. C. Braz +2
We investigate the sedimentation dynamics of a binary mixture, the species of which differ by their Stokes coefficients but are identical otherwise. We analyze the sedimentation dy…
The symbiotic contact process: phase transitions, hysteresis cycles, and bistability
C. I. N. Sampaio Filho, T. B. dos Santos, N. A. M. Araújo +3
We performed Monte Carlo simulations of the symbiotic contact process on different spatial dimensions (). On the complete and random graphs (infinite dimension), we observe hyst…
Heat capacities of thermally manipulated mechanical oscillator at strong coupling
Michal Kolář, Artem Ryabov, Radim Filip
Coherent quantum oscillators are basic physical systems both in quantum statistical physics and quantum thermodynamics. Their realizations in lab often involve solid-state devices…
Dynamical suppression of tunneling and spin switching of a spin-orbit-coupled atom in a double-well trap
Y. V. Kartashov, V. V. Konotop, V. A. Vysloukh
We predict wide-band suppression of tunneling of spin-orbit-coupled atoms (or noninteracting Bose-Einstein condensate) in a double-well potential with periodically varying depths o…
Random Sequential Adsorption on mobile patches
Diogo E. P. Pinto, Nuno A. M. Araujo
An extension of the Random Sequential Adsorption (RSA) model has been proposed recently, motivated by the coverage of oil droplets by DNA-functionalized colloidal particles. Partic…