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SEMINARIO: Open Quantum Systems 2: The Lindblad Equation
by Michalis Skotiniotis 08 Apr '25

08 Apr '25

El grupo de Termodinámica y Computación Cuántica les invita al siguiente seminario Fecha: Viernes 11 de Abril 2025 Hora: 12:00 am Lugar: Laboratorio de Fïsica Computacional, Dept de Electromagnetismo y Física de al Materia, Planta Baja, Facultad de Ciencias (junto al péndulo gigante) Ponente: Daniel Manzano (QTCG, Universidad de Granada) Titulo: Open Quantum Systems 2: The Lindblad Equation Resumen: In this lecture, we will introduce the problem of Open Quantum Systems within the Markovian framework, a crucial approach for understanding dissipation and decoherence in quantum mechanics. We will begin by considering the full quantum dynamics of a composite system consisting of a subsystem of interest coupled to an environment. By systematically applying a series of approximations—such as weak coupling, Born, and Markov approximations—we will derive an effective equation of motion that governs the reduced dynamics of the subsystem. This will allow us to describe irreversible processes and the loss of quantum coherence in a controlled manner. Throughout the lecture, we will emphasize the physical meaning of these approximations and their range of validity. El seminario es accesible para los estudiantes de grado, a los que recomendamos encarecidamente que asistan. Para quienes no puedan asistir, el seminario estará disponible en el canal de YouTube del grupo en unos días. https://www.youtube.com/@qtcg_ugr También os recordamos a todos la página web del Grupo, https://ic1.ugr.es/members/qtc/ donde se publicarán anuncios pasados, presentes y futuros. Nos vemos a todos allí DJM ________________________________________________________________________________ Dear all The Quantum Thermodynamics and Computation group cordially invites you to the following seminar Date: Friday 11 of April 2025 Time: 12:00 am Location: Computational Physics Laboratory, Department of Electromagnetism and Condensed Mater, Ground Floor, Faculty of Science (next to the giant pendulum) Speaker: Daniel Manzano (QTCG, University of Granada) Title: Open Quantum Systems 2: The Lindblad Equation Abstract: In this lecture, we will introduce the problem of Open Quantum Systems within the Markovian framework, a crucial approach for understanding dissipation and decoherence in quantum mechanics. We will begin by considering the full quantum dynamics of a composite system consisting of a subsystem of interest coupled to an environment. By systematically applying a series of approximations—such as weak coupling, Born, and Markov approximations—we will derive an effective equation of motion that governs the reduced dynamics of the subsystem. This will allow us to describe irreversible processes and the loss of quantum coherence in a controlled manner. Throughout the lecture, we will emphasize the physical meaning of these approximations and their range of validity. The seminar is accessible to undergraduate students, whom we strongly encourage to attend. For those unable to attend, the seminar will be available on the groups Youtube channel in a few days https://www.youtube.com/@qtcg_ugr We would also like to bring to your attention the groups web page https://ic1.ugr.es/members/qtc/ where you can find relevant material and information about past, present, and future seminars. See you all there DJM. --------------------------------------------------------- Dr. Michalis Skotiniotis Grupo de Termodinámica y Información Cuántica. Departamento de Electromagnetismo y Física de la Materia. Instituto Carlos I de Física Teórica y Computacional. Facultad de Ciencias, Av. Fuentenueva s/n Universidad de Granada Granada, 18071 Spain Email: mskotiniotis(a)onsager.ugr.es ---------------------------------------------------------

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Fwd: [dasci-seminarios] DaSCI Seminar - This Week - Sandra González-Bailón - Social and algorithmic choices in the transmission of (mis)information
by Daniel Manzano 07 Apr '25

07 Apr '25

Interesting seminar. --------------------------------------------------------------------------------- Daniel Manzano Quantum Thermodynamics and Quantum Computation Group University of Granada Facultad de Ciencias, Av. Fuentenueva s/n Granada 18071, Spain Phone: +34 958241000 Ext: 20569 https://ic1.ugr.es/members/dmanzano/ > Begin forwarded message: > > From: Pablo Mesejo Santiago <pmesejo(a)go.ugr.es> > Subject: [dasci-seminarios] DaSCI Seminar - This Week - Sandra González-Bailón - Social and algorithmic choices in the transmission of (mis)information > Date: 7. April 2025 at 09:35:58 CEST > To: dasci(a)listas.ugr.es, dasci-seminarios(a)listas.ugr.es > Cc: "Gonzalez-Bailon, Sandra" <sandra.gonzalez.bailon(a)asc.upenn.edu> > > Dear DaSCI members, > > Below you can find the information related to the DaSCI seminar which will take place this Wednesday (April 9th 2025). > > Speaker: Sandra González-Bailón > Title: Social and algorithmic choices in the transmission of (mis)information > Online Room: https://oficinavirtual.ugr.es/redes/SOR/SALVEUGR/accesosala.jsp?IDSALA=2299… > Password: 867285 > Date: 09/04/2025 > Time: 16:00 (Spanish time) > > The following link can allow you to directly schedule this event, and save all this information, in your Google Calendar: https://calendar.app.google/cQwuc4ccJjZ2dJHX7 <https://urldefense.com/v3/__https://calendar.app.google/cQwuc4ccJjZ2dJHX7__…> > > We encourage PhD students to participate in these events. In this regard, we will share a registration form during the talk, so students can register and certify their attendance to the corresponding PhD program. > > As usual, the seminar will last around 1h (45 min. talk + 15 min. of questions). > > Abstract: > The circulation of information requires prior exposure: we cannot disseminate what we do not see. In online platforms, information exposure results from a complex interaction between social and algorithmic forms of curation that shapes what people see and what they engage with. In this talk, I will discuss recent research investigating the social and technological factors that shape what information we encounter online and how it diffuses from user to user. I will also discuss why it is important we adopt a systematic approach to mapping the information environment as a whole – this approach is needed to capture aggregate characteristics that go unnoticed if we only focus on individuals. Networks, I will argue, offer measurement instruments that can help us map that landscape and identify pockets of problematic content as well as the types of audiences more likely to engage with it. > > Short Bio: > Sandra González-Bailón is the Carolyn Marvin Professor of Communication at the Annenberg School for Communication, and Director of the Center for Information Networks and Democracy (cind.asc.upenn.edu <https://urldefense.com/v3/__http://cind.asc.upenn.edu/__;!!D9dNQwwGXtA!RMVa…>). She also has a secondary appointment in the Department of Sociology at Penn. Prior to joining Penn, she was a Research Fellow at the Oxford Internet Institute (2008-2013). She completed her doctoral degree in Nuffield College (University of Oxford) and her undergraduate studies at the University of Barcelona. Her research agenda lies at the intersection of computational social science and political communication. Her applied research looks at how online networks shape exposure to information, with implications for how we think about political engagement, mobilization dynamics, information diffusion, and the consumption of news. Her articles have appeared in journals like PNAS, Science, Nature, Political Communication, the Journal of Communication, and Social Networks, among others. She is the author of the book Decoding the Social World (MIT Press, 2017) and co-editor of the Oxford Handbook of Networked Communication (OUP, 2020). > > We hope this talk will be of interest to you, and we look forward to seeing you the day after tomorrow. > > Best, > Pablo

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