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Efeitos de interações de terceiros vizinhos sobre a criticalidade do modelo de Ising quântico na rede quadrada frustrada
(Universidade Federal de Santa Maria, 2023-02-14)
In the present work, we investigate the phase transitions of the Ising model with interactions
between first (J1), second (J2) and third (J3) neighbours in the square lattice with transverse magnetic field. In this study, ...
Complementaridade quântica nos processadores quânticos da IBM
(Universidade Federal de Santa Maria, 2023-01-31)
Bohr’s principle of complementarity, after gaining contributions from several researchers, moved from a qualitative analysis to a quantitative analysis through what we
call today complementarity relations (CR). This change ...
Ventos de gás ionizado a partir do núcleo da galáxia OH megamaser IRAS 09320+6134
(Universidade Federal de Santa Maria, 2023-03-03)
[Ultra]luminous infrared galaxies are extremely bright objects in this spectrum range, with luminosities bigger than 1011 L . It is observed that these objects, which typically consist of
interactions and mergers of ...
Exchange bias perpendicular em multicamadas de IrMn/Co/Pd
(Universidade Federal de Santa Maria, 2023-04-26)
Magnetic skyrmions are spin textures that can arise in thin films that exhibit the Dzyaloshinskii–Moriya interaction. Such interaction emerges from symmetry breaking at the interface
between a ferromagnetic material and ...
Análise da anisotropia orbital de populações de galáxias em aglomerados
(Universidade Federal de Santa Maria, 2023-07-28)
In this work we analyze the velocity anisotropy profiles β(r) of the star-forming (SF), transition
(T), AGN, and quiescent (Q) galaxy populations belonging to gaussian clusters in
order to study the impact of a galaxy’s ...
Método de baixo custo para reutilização de máscaras N95 através de recarga eletrostática
(Universidade Federal de Santa Maria, 2023-07-28)
Due to the Covid-19 pandemic, a disease caused by the Sars-CoV-2 virus, the
use of personal protective masks has increased dramatically. The World Health
Organization (WHO) recommends the PFF2 model, equivalent to the ...
O áxion em condições extremas: matéria de quarks quente e magnetizada, meios densos e estrelas compactas
(Universidade Federal de Santa Maria, 2023-07-31)
We investigate the phase diagram of quantum chromodynamics by means of the Nambu-
Jona-Lasinio effective model, including the axion - a particle which emerges as a solution
of the strong charge-parity (CP) problem and ...
Termodinâmica e transições de fase existentes na matéria de quarks com desbalanceamento quiral
(Universidade Federal de Santa Maria, 2023-07-01)
In this dissertation, we have used effective models, such as the Nambu-Jona-Lasinio (NJL)
and the Polyakov–Nambu–Jona-Lasinio (PNJL) to describe and study the Quantum Chromodynamics (QCD) phase diagram with chiral imbalance. ...
Efeitos do momento magnético anômalo na matéria de quarks
(Universidade Federal de Santa Maria, 2023-07-28)
This work aims to investigate the effect of anomalous magnetic moment (AMM) of quarks in
the NJL and PNJL two-flavor models at finite temperature, chemical potential, and magnetic
field. To achieve this, we employed the ...
Simulação de canais quânticos usando preparação variacional de estados
(Universidade Federal de Santa Maria, 2023-10-13)
Quantum computers still suffer from errors that keep them in the category of Noisy
Intermediate-Scale Quantum (NISQ) computers. Among the various tools capable of
circumventing some of the problems of NISQ computers, ...