The internal seminar series is back for the fall term, this week with talks from Dr. Jamila Rodrigues and Dr. Yi Huang (Complexity Science and Evolution Unit) and Zohreh Shahrabifarahani (Light-Matter Interactions for Quantum Technologies Unit). Stop by to learn about the exciting projects happening in other units and sections, chat with fellow researchers, and enjoy complimentary refreshments!

Speaker: Christian Baadsgaard Jepsen (KIAS, School of Physics, Quantum field theory and String theory)
Title: An Atlas of p-adic AdS/CFT
Date and time: 11th November Monday at 10:30
Location: L5D23
Language: English

Seminar by Prof. Rudolf Meier from Humboldt Universitat zu Berlin

https://www.museumfuernaturkunde.berlin/en/user/2072

Abstract:
Biodiversity science often overlooks hyperdiverse insect clades, despite their critical ecosystem services. To illustrate this, I show that over half of the flying insect diversity in many samples is concentrated within 20 family-level clades, regardless of sampling location. By comparing species richness in bulk samples with the number of described species, I highlight how little is known about these clades, leading to the conclusion that new approaches to species discovery and the taxonomy of “dark taxa” are essential. At the Center for Integrative Biodiversity Discovery at the Natural History Museum Berlin, we envision a future where specimen handling and imaging are largely automated, specimens are sorted into putative species using nanopore barcodes, and species descriptions combine molecular and morphological data in a semi-automated process. I will demonstrate how this approach can transform a "dark taxon" like fungus gnats in the Mycetophilidae family from largely unknown in regions like Singapore to sufficiently well-documented for biomonitoring. Finally, I will discuss how images of common species could then be used to use train AI algorithms for a future where many specimens will be identified by images only.

Speaker: Krishna Jalan

Title: Generalized second law for non-minimally coupled matter theories

Abstract: In this talk, I will give a brief overview of the  generalized second law (GSL) of black hole thermodynamics. In  particular, we will see how the GSL works out for non-minimally  coupled matter theories within the context of higher curvature gravity  theories. Previous proofs in the literature have extensively addressed  the GSL in various gravity theories, but they have uniformly assumed  that matter sectors couple minimally to gravity. In this presentation,  we will explore a straightforward generalization of the GSL to  scenarios involving non-minimally coupled matter, specifically scalar  fields, within an effective field theory framework.

Speaker: Jan  Głowacki

Title: Relativistic operational quantum reference frames

Abstract: I will be sharing some recent insights related to applying the operational approach to quantum reference frames (QRFs) in relativistic contexts. I will begin by briefly reviewing the principles of operational QRFs to then apply them in the context of the Poincare group and discuss the emerging notion of relational local observables. This perspective can be further generalized to gauge theories by replacing the Poincare group by an arbitrary principal bundle. In this context, the concepts of external frame transformations, gauge-invariance and diff-invariance can be understood in a relational and operational manner. If time allows, I will also mention work in progress on how indefinite geometries can be incorporated in this picture, how far we in establishing this approach as a relational and mathematically sound foundation for QFT, and its connections to quantum measurement theory in this context. I would also be happy to exchange some ideas about how the `thermal modular type-reduction’ phenomena could be seen from this perspective.

Rongwei Yang, University at Albany, SUNY

Title: Linear algebra in several variables

Professor. Heiko Schütt : Reward prediction error neurons implement an efficient code for reward

Daisuke Sagaki, University of Tsukuba

Title: Toward a Pieri rule for double quantum Grothendieck polynomials

Dr. Tomonari Nozaki, Assistant Professor, National Institute for Basic Biology (NIBB)

[Seminar]  Thermometry based on a superconducting qubit and its applications

Speaker: Dmitrii Lvov, Aalto University,

Language: English