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É com grande orgulho e satisfação que comunicamos a eleição da nossa colega e docente do nosso programa de pós-graduação Profa. Débora Peres Menezes para a Academia Brasileira de Ciências. Vejam o comunicado na página da ABC.
A Profa. Débora realiza um trabalho científico destacado e de qualidade reconhecida nacional e internacionalmente. Além disso, é uma militante em prol da educação e da ciência no nosso país. Atualmente ocupa a presidência da Sociedade Brasileira de Física e realiza um trabalho duríssimo de resistência ao processo de desmonte da ciência e educação no Brasil.
Em nome do programa de pós-graduação felicitamos a Profa. Débora e desejamos grande sucesso na atuação junto à ABC.
Prof. Paulo H. Souto Ribeiro
Coordenador de pós-graduação em Física
CFM-UFSC
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Foi divulgada a Portaria que altera o cronograma e aceita a nota do exame da EUF 3-2021 para ingresso no processo seletivo 2022/1.
Clique aqui para mais detalhes.
EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:
Structured light for computation and light conversion
Dra. Nara Rubiano da Silva
Pós-doutoranda – GIQSul – UFSC
Resumen:
Structured light displays intricate field distributions (of intensity, phase, polarization) in space, with several emerging applications. In the Quantum Optics Laboratory at UFSC, we study classical and quantum processes utilizing such optical fields. In this talk, I will present two of our recent results in the classical regime. Firstly, we manipulate the phase of light for realizing a computational task, namely, a matrix-by-vector multiplication. Each matrix or vector element is mapped into the tranverse phase distribution of the light beam, and the required operations are realized by optical elements. I will introduce this optical processor and, as an example, its application to an optimization problem called unidimensional Distance Geometry Problem. In a second work, we investigate a fundamental aspect of employing structured beams of the Laguerre-Gauss family in stimulated parametric down-conversion. Specifically, we analyse the selection rules involving the radial order of the resulting LG beams, which I will discuss in my talk.
Fecha: 3 de deciembre de 2021 – (viernes) – Horário: 10:15 a.m.
Enlace acceso al canal de youtube: https://youtu.be/PHyzke71iHQ
El Programa de Posgrado en Física invita a todos para:
Examen de Cualificación al Doctorado
Carline Biesdorf
MODIFICAÇÕES NO MODELO DA SACOLA DO MIT E DIAGRAMAS DE FASES DA QCD
Jurados
Profª. Drª. Débora Peres Menezes – (presidente) – UFSC/FSC
Prof. Dr. Marcelo Dallagnol Alloy – (miembro titular) – UFSC/Blumenau
Prof. Dr. Luiz Laércio Lopes – (miembro externo) – CEFET/MG
Prof. Dr. Celso de Camargo Barros Junior – (miembro titular) – UFSC/FSC
Prof. Dr. Tiago José Nunes da Silva – (miembro titular) – UFSC/FSC
Fecha: 1 de diciembre de 2021– quarta-feira – Horario: 10:00 am – Lugar: a través de la plataforma Google Meet
Enlace de acceso a la sala virtual: https://meet.google.com/reu-rgkr-kct
EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:
Detailed chrono-chemo-dynamics of seven metal-poor red giants from Kepler
Arthur Alencastro Puls
Research School of Astronomy and Astrophysics, Australian National University
Resumen:
The Kepler mission has yielded a revolution in the field of GalacticArchaeology, with its photometry allowing the determination of stellar parameters with an unprecedented level of precision for Red Giant stars. Recent studies have shown that a few of these objects display conflicting characteristics in the age-metallicity space (e.g., young and metal-poor). In this project we combine asteroseismic information from solar-like oscillations, high-resolution spectroscopy and Gaia astrometry to derive stellar ages, chemical abundances and kinematics for a group of metal-poor Red Giants, and characterise them in a multidimensional chrono-chemo-dynamical space. Our results suggest that underestimated parallax errors make the effect of Gaia parallaxes more important than different choices of model grid or – in the case of stars ascending the RGB – mass-loss prescription. Two stars are identified as potentially evolved halo blue stragglers. Four objects are likely members of the accreted Milky Way halo, and their possible relationship with known accretion events, such as Gaia-Sausage and Gaia-Sequoia, is discussed.
Fecha: 26 de noviembre de 2021 – (viernes) – Horário: 10:15 a.m.
Enlace acceso al canal de youtube: https://youtu.be/D1pIcDUoHds
EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:
Chemistry in optical microcavities: Spectral fluctuations and energy transport
Prof. Dr. Raphael Ribeiro
Department of Chemistry, Emory University – Atlanta, USA
Resumen:
Optical cavities and metallic nanoparticles confine electromagnetic fields and enable new pathways to control physicochemical processes via strong light-matter interactions. In fact, recent experiments have shown that photonic and plasmonic materials may induce significant and sometimes unexpected changes to physical properties and reactivity of molecular systems. In this talk, I will introduce and present the key results of our recent theoretical investigations on the effects of collective radiation-matter interactions on transport and spectral properties of disordered molecular ensembles hosted by a resonant 1D optical cavity (photonic wire). The main implications of our findings to future theoretical and experimental research will be discussed. I will show that widely employed minimal theoretical models fail to adequately describe photonic effects on the local properties of chemical systems and explain strategies to maximize the influence of optical cavities on molecular materials informed by our simulations.
Fecha: 19 de noviembre de 2021 – (viernes) – Horário: 10:15 a.m.
Enlace acceso al canal de youtube: https://youtu.be/8nV3QDFmhB8
EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:
What Hampers Electron Transport in Organic Crystals? A Close Look at Band-like Transport in N-type Organic Semiconductors
Prof. Dr. Emanuele Orgiu
Institut National de la Recherche Scientifique – INRS, Québec – Canada
Resumen:
Charge transport in organic semiconductors is notoriously sensitive to the presence of disorder, both intrinsic and extrinsic, especially for n-type materials. Intrinsic dynamic disorder stems from large thermal fluctuations both in intermolecular transfer integrals and (molecular) site energies in weakly interacting van der Waals solids and sources transient localization of the charge carriers. The molecular vibrations that drive transient localization typically operate at low-frequency (< a-few-hundred cm-1), which makes it difficult to assess them experimentally. Hitherto, this has prevented the identification of clear molecular design rules to control and reduce dynamic disorder. In addition, the disorder can also be extrinsic, being controlled by the chemical and physical «coupling» of the π-conjugated core to the gate dielectric. During the Colloquium, I will present a comprehensive study of charge transport in two closely related n-type molecular organic semiconductors using a combination of temperature-dependent inelastic neutron scattering and photoelectron spectroscopy corroborated by electrical measurements, theory and simulations. By doing so, unambiguous evidence is provided that ad hoc molecular design enables to free the electron charge carriers from both intrinsic and extrinsic disorder to ultimately reach band-like electron transport.
Fecha: 12 de noviembre de 2021 – (viernes) – Horário: 10:15 a.m.
Enlace acceso al canal de youtube: https://youtu.be/TE3LD1NKi4c
EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:
Gauge invariant quantum thermodynamics: consequences for the first law
Prof. Dr. Lucas Chibebe Céleri
Instituto de Física – UFG
Resumen:
Universality of classical thermodynamics rests on the central limit theorem, due to which measurements of thermal fluctuations are unable to reveal detailed information regarding the microscopic structure of a macroscopic body. When small systems are considered and fluctuations become important, thermodynamic quantities can be understood in the context of classical stochastic mechanics. A fundamental assumption behind thermodynamics is therefore that of coarse-graining, which stems from a substantial lack of control over all degrees of freedom. However, when quantum systems are concerned, one claims a high level of control. As a consequence, information theory plays a major role in the identification of thermodynamic functions. Here, drawing from the concept of gauge symmetry, essential in all modern physical theories, a new, intermediate, route is put forward. Working within the realm of quantum thermodynamics, a physically motivated gauge transformation, which encodes a gentle variant of coarse-graining behind thermodynamics, is explicitly constructed . As a consequence, quantum work and heat are reinterpreted, as well as the role of quantum coherence.
Fecha: 5 de noviembre de 2021 – (viernes) – Horário: 10:15 a.m.
Enlace acceso al canal de youtube: https://youtu.be/ieeh_LtXBgI
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O Programa de Pós-Graduação em Física da UFSC torna público os editais do processo seletivo para os cursos de mestrado e doutorado para ingresso no semestre 2022/1.
As inscrições ocorrerão no período de 1 a 30 de novembro de 2021. O PPGFSC utiliza a nota do Exame Unificado de Pós-Graduações em Física – EUF para ingresso nos cursos de mestrado de doutorado.
Click aqui e acesse o site do processo seletivo do PPGFSC/UFSC.
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Segue abaixo o link de acesso ao resultado do Processo Seletivo Simplificado PPGFSC/UFSC para ingresso nos cursos de mestrado e doutorado no semestre 2021/2:
Resultado
Os candidatos contemplados com bolsa de estudos serão informados após a reunião da comissão de bolsa.
