DSpace Coleção:https://ri.ufs.br/jspui/handle/riufs/24672026-05-01T02:02:23Z2026-05-01T02:02:23ZCaracterização das propriedades estruturais e magnéticas da série SmF e1−xMnxO3Silva, Cláudia Adriana dahttps://ri.ufs.br/jspui/handle/riufs/249282026-04-22T19:44:11Z2012-02-10T00:00:00ZTítulo: Caracterização das propriedades estruturais e magnéticas da série SmF e1−xMnxO3
Autor(es): Silva, Cláudia Adriana da
Abstract: Continuar depois...2012-02-10T00:00:00ZEstudo da dinâmica de partículas confinadas fluindo em sentidos contráriosSantos, Kaique Silvahttps://ri.ufs.br/jspui/handle/riufs/240672025-12-12T19:34:01Z2019-02-27T00:00:00ZTítulo: Estudo da dinâmica de partículas confinadas fluindo em sentidos contrários
Autor(es): Santos, Kaique Silva
Abstract: In this work a computational study was made to understand how the potential of interaction
with a system of particles can influence the progress in its system. In confined particle systems
flowing toward contraction is what has increased the risk of carrying an orderly state with zero
fluency, the results were revealed in the Dirk Helbing article titled Heating Freezing in a
Mesoscopic Powered System. In this case, the freezing phenomenon can be called freezing by
heating, it can be more than a year with the same effect of temperature, and in this case, with
higher total energy. In this work we apply a system that provides two distinct impulses,
polynomial potential and Yukawa potential, where the former has a higher growth with
decreasing distance. We thus conclude with the best sources of energy to establish a solid state
when interacting through a potential that has a higher growth for the short-range interactions.
Another example of order studied this work is called kepp-left, where it simulates the behavior
of pedesthes in questions of extreme panger (amplitude of somence sound). For this type of end
phenomenon, we conclude that an asymmetric wave can be made two bands of continuous
motion where the flow is not maintained. It is determined that this example can be reproduced
in specific situations directly from asymmetric confinement screens and environmental density.2019-02-27T00:00:00ZDinâmica de Langmuir e exclusão de volume em cadeias lineares via formalismo do espaço de FockSilva, Luis Davi Santoshttps://ri.ufs.br/jspui/handle/riufs/231502025-09-17T18:57:44Z2025-07-21T00:00:00ZTítulo: Dinâmica de Langmuir e exclusão de volume em cadeias lineares via formalismo do espaço de Fock
Autor(es): Silva, Luis Davi Santos
Abstract: The totally asymmetric simple exclusion process (TASEP) and Langmuir dynamics (LK) are
classically studied via stochastic methods such as mean field approximations or Monte Carlo
simulations. In this work, we propose an alternative approach based on mapping the master
equation to a Schrödinger-type equation in Fock space, using second quantization operators.
This formalism allows an exact description of stochastic dynamics in finite linear chains, capturing fluctuations neglected by traditional methods. We investigate competitive regimes between
TASEP and LK that can lead the system to a non-trivial steady state of lattice occupation density, with parameters controlled by input, output, and diffusion rates. Our results reveal the
formation of domain walls, separating regions of high and low density, whose location differs
from mean field predictions. Statistical signatures in cumulants (mean, variance, skewness,
kurtosis) and joint moments (⟨ni
, nj ⟩), highlighting amplified fluctuations in central sites when
LK exists. Phase transitions in purely TASEP systems, consistent with known results. The numerical implementation, based on the diagonalization of the quasi-Hamiltonian operator (2
k × 2
k
for k = 10 sites),highlighted computational challenges inherent to the method. This work not
only validates the applicability of Fock space in combined diffusion problems, but also paves the
way for studies of systems with non-Markovian interactions or two-dimensional geometries. In
addition, our method offers perspectives for biological systems (e.g., ribosome transport with
stochastic binding of tRNA) and materials (adsorption of nanoparticles in nanotubes), where
spatial exclusion effects and competitive adsorption are critical.2025-07-21T00:00:00ZDifusão clássica em cadeias lineares com exclusão de volume e resetting utilizando as técnicas do espaço de FockMacedo, Enoque Ferreirahttps://ri.ufs.br/jspui/handle/riufs/230992025-09-10T19:51:30Z2025-07-22T00:00:00ZTítulo: Difusão clássica em cadeias lineares com exclusão de volume e resetting utilizando as técnicas do espaço de Fock
Autor(es): Macedo, Enoque Ferreira
Abstract: The effects of resetting in random search processes include backwardness in process
completion, asymmetries in the diffusion process, overcrowding, and the origin of the
optimization problem of first-pass time moments in stochastic physical systems. Besides,
the exploration of resetting in stochastic dynamics has the ability to model human and
animal search behavior, robotic explorations that depend on resetting strategies, protein
searches on DNA, among others. In this context, we will make use of the Fock space
formalism, which allows us to use second quantization operators adapted to the classical
scenario with the aim of including the resetting process into classical diffusion in linear
chains with volume exclusion. From this point, we explore a series of physical implications
resulting from this inclusion, as well as the creation of optimization strategies.2025-07-22T00:00:00Z