THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

Quantum Darwinism and the spreading of classical information in non-classical theories

Dr. Roberto Dobal Baldijão

Unicamp

Abstract:

Quantum Darwinism helps us to understand how our world ends up looking classical, besides being non-classical in nature. It posits that such emergence of a classical reality relies on the spreading of classical information from a quantum system to many parts of its environment. But what are the essential physical principles of quantum theory that make this mechanism possible? We address this question by formulating the simplest instance of Darwinism — CNOT-like fan-out interactions – in a class of probabilistic theories that contain classical and quantum theory as special cases. We determine necessary and sufficient conditions for any theory to admit such interactions. We find that every theory with non-classical features that admits this idealized spreading of classical information must have both entangled states and entangled measurements. Furthermore, we show that Spekkens’ toy theory admits this form of Darwinism, and so do all probabilistic theories that satisfy principles like strong symmetry, or contain a certain type of decoherence processes. Our result suggests the counter-intuitive general principle that in the presence of local non-classicality, a classical world can only emerge if this non-classicality can be “amplified” to a form of entanglement.

Date: May 13, 2022 – (friday) – Time: 10:15 a.m.

link to access the youtube channel: https://youtu.be/Ao09HVXxYP8

THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

Delta Baryons in Magnetized Neutron-Star Matter

Kauan Dalfovo Marquez

UFSC/FSC

Abstract:

Strong magnetic fields, such the ones expected to occur in the interior of neutron stars, can modify the microscopic composition of baryonic matter. In this work, we study magnetic field effects on neutron star matter containing the baryon octet and additional heavier spin-3/2 baryons (the deltas). We make use of different relativistic models for the equation of state of dense matter under the influence of strong magnetic fields, also considering the effects of the anomalous magnetic moment of leptons and baryons. We find that a strong magnetic field enhances the delta-baryon population in dense matter, while decreasing the relative density of hyperons. Astrophysical implications are drawn from the assumption that magnetic neutron stars are likely to contain delta-baryons in their interior.

Date: May 06, 2022 – (friday) – Time: 10:15 a.m.

link to access the youtube channel: https://youtu.be/pbRzT9CpcYg

The Physics Graduate Program invites everyone to:

Defense of Doctoral Thesis

Thomas Häffner

STUDY OF THE QUANTUM LIMIT OF THERMODYNAMICS EMPLOYING PHOTONIC ENTANGLEMENT

Defense Committee:

Prof. Dr. Paulo Henrique Souto Ribeiro – (president) – (UFSC/FSC)

Prof. Dr. Daniel Schneider Tasca – (external member) – UFF

Prof. Dr. Eduardo Inacio Duzzioni – (local member) – UFSC/FSC

Prof. Dr. Renné Luiz Câmara Medeiros de Araújo – (201800935) – UFSC/FSC

Prof. Dr. Carlos Eduardo Rodrigues de Souza – (supplementary member) –  UFF

Prof. Dr. Luis Guilherme de Carvalho Rego – (supplementary member)- UFSC/FSC

Date: April 29, 2022 – friday – Times: 3:30 pm – Place: por intermédio da plataforma ZOOM

Virtual room access link: https://us02web.zoom.us/j/86438950006?pwd=bWVadjV1cHljSWZlUThGVXpmQmdZZz09

The Physics Graduate Program invites everyone to:

Defence of M.Sc. dissertation

Valéria Mariani Mattiello

PROPERTIES OF SOFT-CORE PARTICLE SYSTEMS IN TWO DIMENSIONS

Defense Commitee:

Prof. Dr. Alejandro Mendoza Coto – (president) – UFSC/FSC

Prof. Dr. Daniel Adrian Stariolo – (external member) – UFF

Prof. Dr. Lucas Nicolao – (local member) – UFSC/FSC

Prof. Dr. Rogelio Díaz Méndez – (miembro suplente) – KTH – Sweden

Prof. Dr. Nilton da Silva Branco – (miembro suplente) – UFSC/FSC

Date: April 29, 2022 – friday – Time: 10:00 am – Place: sala virtual Conferência Web da Rede Nacional de Ensino e Pesquisa (RNP)

Virtual room access link: https://conferenciaweb.rnp.br/webconf/valeria-mariani

THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

Galáxias muito jovens no universo local: como são e onde estão?

Profa. Dra. Marina Trevisan

Universidade Federal do Rio Grande do Sul

Abstract:

No universo local, existem galáxias anãs que formaram uma grande fração de suas massas estelares nas últimas centenas de milhões de anos. No entanto, pouco se sabe sobre a fração de populações estelares jovens em galáxias mais massivas. Em um estudo recente utilizando dados do Sloan Digital Sky Survey, nós identificamos um número significativo de galáxias muito jovens que formaram pelo menos 50% de sua massa estelar no último bilhão de anos. Com o objetivo de investigar a natureza desses objetos, nós realizamos uma análise detalhada das propriedades e ambiente dessas galáxias. Os resultados do nosso estudo serão apresentados neste seminário.

Date: April 29, 2022 – (friday) – Time: 10:15 a.m.

link to access the youtube channel: https://youtu.be/gRVvDLF4Lrk

THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

Meios granulares: silos, fluxos e obstruções

Prof. Dr. Ramon Enrique Ramayo Gonzalez

Universidade Federal Rural de Pernambuco

Abstract:

Recentemente foi proposta a existência de uma transição de um estado obstruído para um não obstruído em um fluxo de partículas macroscópicas através de “gargalos” em sistemas tão diversos quanto suspensões coloidais, matéria granular ou seres vivos. Nesta palestra, inicialmente, falaremos das características deste fenômeno e sua semelhança com outros fenômenos. Mostraremos, a seguir, resultados experimentais recentemente obtidos por nós, que demonstram a existência desta transição num meio granular bidimensional submetido a vibrações verticais e sua caracterização como uma função do tamanho do canal e intensidade de vibração. Confirmaremos também a adequação do “parâmetro de fluxo” como o parâmetro de ordem, e justificaremos a substituição da aceleração máxima reescalonada do sistema, como parâmetro de controle, por uma velocidade adimensional que pode ser vista como a raiz quadrada da razão entre energia cinética e potencial.

Date: March 25, 2022 – (friday) – Time: 10:15 a.m.

link to access the youtube channel: https://youtu.be/lpr3Kj_PXx0

THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:

100 anos do experimento de Stern-Gerlach

Prof. Dr. Emmanuel Gräve de Oliveira

UFSC/FSC

Abstract:

Apresentarei o experimento de Stern–Gerlach e seu resultado notório, que completa 100 anos no ano corrente. Será descrita a interpretação atual do experimento que é usada para introduzir o tema de spin em muitos livros-textos. Também discutirei o contexto histórico de 1922 e a interpretação física original, chamada à época de quantização do espaço.

Date: March 18, 2022 – (friday) – Time: 10:15 a.m.

link to access the youtube channel: https://www.youtube.com/watch?v=Y5fhlo87bH4

Dear PhD students,

From 10 am on February 28, 2022, applications for a proposal to carry out an internship abroad by the Sandwich Doctorate Program abroad (PDSE/CAPES) for the year 2022 are open.

In this selection process, the PPGFSC has the availability of a scholarship for a minimum of 6 (six) months and a maximum of 10 (ten) months.

Below are CAPES public notice nº 10/2022, which establishes general rules for the event, as well as public notice nº 1/2022/PPGFSC, which establishes specific rules for the selection of candidates for the Graduate Program in Physics (PPGFSC).

• Notice nº 1/2022/PPGFSC
• CAPES Notice nº 10/2022
• Attachment I – Term of Grant
• Attachment II – Foreign language proficiency requirements

We ask that all candidates read the notices carefully.

Applications will close at 5 pm on March 14, 2022.

Click here for more information.

The Physics Graduate Program invites everyone to:

Defense of Doctoral Thesis

Edgar Yubert Huayra Paitan

THE DOUBLE PARTON SCATTERING IN ULTRAPERIPHERAL COLLISION

Defense Committee:

Prof. Dr. Emmanuel Gräve de Oliveira – (president) – UFSC/FSC
Prof. Dr. Gustavo Gil da Silveira – (external member) – UFRGS
Prof. Dr. Victor Paulo Barros Gonçalves – (external member) – UFPEL
Prof. Dr. Tiago José Nunes da Silva – (local member) – UFSC/FSC
Prof. Dr. Daniel Almeida Fagundes – (supplementary member)- UFSC/Blumenau

Date: March 10, 2022 – thursday – Times: 2:00 pm – Place: sala virtual da Conferência Web da Rede Nacional de Ensino e Pesquisa (RNP)

Virtual room access link: https://conferenciaweb.rnp.br/conference/rooms/edgar-huayra/invite

As approved at the 205th ordinary meeting of the Delegate Collegiate of the Graduate Program in Physics, the subjects for the 2022/1 semester will be offered according to the following schedule:

Subject: Quantum Mechanics I
Subject Code: FSC3310000
Professor: Emmanuel Gräve de Oliveira
Class Hours: 90 (ninety)
When: Mondays from 4 pm to 6 pm; Tuesdays and Thursdays from 10 am to 12 am
Where: Room 212 – Auditório
Schedule: 100% in-person classes, starting on 03/07/2022.

Subject: Electromagnetic Theory I
Subject Code: FSC410129
Professor: Celso de Camargo Barros Jr.
Class Hours: 90 (ninety)
When: Tuesdays, Wednesdays and Thursdays from 1:30 pm to 3:30 pm
Where: Room 212 – Auditório
Schedule:
03/07/2011 to 03/25/2022 – Remote classes (synchronous);
04/18/2022 to 07/08/2022 – In-person classes.

Subject: Special Topics in Physics: Higher Education Physics I, II and III
Subject Code: FSC410103, FSC510009 and FSC510010
Professor: Marcelo Henrique Romano Tragtenberg
Class Hours: 30 (thirty)
When: Tuesdays from 5pm to 7pm
Where: Room 212 – Auditório
Schedule:
03/07/2011 to 03/25/2022 – Remote classes (synchronous);
04/18/2022 to 07/08/2022 – In-person classes.

The subject FSC340000 STELLAR STRUCTURE AND EVOLUTION will not be taught in the 2022/1 semester.

Click here to view the full 2022/1 calendar.