Institut für Theoretische Physik
Fachbereich 13

Im Sommersemester 2023 findet das Arbeitsgruppenseminar donnerstags von 14:00 bis 16:15 im Seminarraum 2.114 statt. Im Seminar diskutieren wir Forschungsergebnisse unserer Arbeitsgruppe, sowie neue Veröffentlichungen und Entwicklungen in folgenden Themenbereichen: Ultrakalte Quantengase, Quantensimulation, Quantencomputing, Quantenoptik, und Quantenvielteilchensysteme. Interessierte Studierende sind herzlich willkommen, am Seminar teilzunehmen!

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Our group seminar takes place every Thursday from 14:00 to 16:15 in room 2.114. Each seminar is devoted to presenting and discussing our recent research work, as well as recent publications and developments in the fields of ultracold gases, quantum optics, quantum simulation and quantum many-body systems. Interested students are very welcome to attend the seminar.

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Please do not confuse our group seminar with the "Condensed Matter Theory Seminar", which is held each Friday at 15:15 in room 1.114.

Summer Semester 2024

Date	Speaker	Topic
18/04/24	Renan da Silva Souza
25/04/24	Bastian Schindler
02/05/24	Daniel Samoylov
16/05/24	Renan da Silva Souza
23/05/24	Walter Hofstetter
06/06/24	Ibrahim Furkan Kaya
13/06/24	Renan da Silva Souza
20/06/24	Bastian Schindler
27/06/24	Walter Hofstetter
04/07/24	Renan da Silva Souza
11/07/24	Daniel Samoylov
18/07/24	Ibrahim Furkan Kaya

Winter Semester 2023/2024

Date	Speaker	Topic
19/10/23	Youjiang Xu	Beyond Landau-Zener: Adiabatic transition rate in a multilevel system without avoided crossing
26/10/23	Renan da Silva Souza	Cavity mediated long-range interactions in quantum gases
16/11/23	Arijit Dutta	The auxiliary master equation approach to DMFT: formulation of the impurity problem in super-operator space
23/11/23	Youjiang Xu	Maxwell’s Demon Walks into Wall Street: Stochastic Thermodynamics Meets Expected Utility Theory
30/11/23	Renan da Silva Souza	Strong-coupling Expansiton for Bose and Fermi Hubbard Models
07/12/23	Renan, Teodora, Youjiang	(cont.)Strong-coupling Expansiton for Bose and Fermi Hubbard Models, progress report
14/12/23	Youjiang Xu	(cont.)Maxwell’s Demon Walks into Wall Street: Stochastic Thermodynamics Meets Expected Utility Theory, progress report
21/12/23	Teodora & Renan	Progress discussions
11/01/23	Renan da Silva Souza	Collective Excitations of Quantum Gases in Driven-dissipative Cavity Systems
18/01/24	Teodora Niculae	Berry phase and the modern theory of polarization
25/01/24	Youjiang Xu	Introduction to GPU RDMFT
01/02/24	Teodora Niculae
08/02/24	Renan da Silva Souza

Summer Semester 2023

Date	Speaker	Topic
13/04/23	Youjiang Xu	Status report: Topology in Quasicrystalline Kapit-Mueller Model
20/04/23	Arijit Dutta	Laughlin charge pump and edge state winding in the AFAI phase
27/04/23	Youjiang Xu	Topology in 2D Floquet system
04/05/23	Arijit Dutta	(cont.) Laughlin charge pump and edge state winding in the AFAI phase
11/05/23	Efe Sen	High-frequency approximation in Floquet systems
25/05/23	Youjiang Xu	Geometric interpretation and interpolation of many-body fermionic product states
01/06/23	Renan da Silva Souza	Ultracold Bosons in Random Lattice Potentials
15/06/23	Arijit Dutta	Status update - AFAI
22/06/23	Renan da Silva Souza	Dicke Transition in Open Many-Body Systems Determined by Fluctuation Effects
29/06/23	Efe Sen	Status report & Real-space detection and manipulation of topological edge modes with ultracold atoms
06/07/23	Arijit Dutta	Real-space Floquet DMFT with the auxilary master equation solver
13/07/23	Youjiang Xu	Status update - Topology in Quasicrystal

Winter Semester 2022/2023

Date	Speaker	Topic
10/02/23	Youjiang Xu	Status report: Migrating GPU-RDMFT code from GoetheHLR to JUWELS
19/01/23	Arijit Dutta	Status report: The periodically driven topological Falicov-Kimball model within DMFT
08/12/22	Morad Ebrahimkhas	Status report: The Anderson-Haldane-Hubbard model
17/11/22	Youjiang Xu	Journal club: Topological pumping in a finite-size system
10/11/22	Arijit Dutta	Journal club: Broyden's method for solving self-consistent equations and its implementation within DMFT
03/11/22	Morad Ebrahimkhas	Status report
27/10/22	Youjiang Xu	Status report; The DPG meeting review
20/10/22	Arijit Dutta	Status report; The DPG meeting review

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Summer Semester 2022

Date	Speaker	Topic
14/07/22	Morad Ebrahimkhas	Status report
	Youjiang Xu	Journal club: An introduction of topological states in quasicrystals
07/07/22	Arijit Dutta	Status report
	Teodora Niculae	Journal club: Encoding of Matrix Product States into Quantum Circuits of One- and Two-Qubit Gates
30/06/22	Morad Ebrahimkhas	Journal club: Metal-insulator transition in the disordered Hubbard model of the Lieb lattice
23/06/22	Arijit Dutta	Journal club: Probing finite-temperature observables in quantum simulators with short-time dynamics
09/06/22	Youjiang Xu	Status report: generalizing the single-site DMFT to approximate non-local self-energy by 1/d expansion
02/06/22	Youjiang Xu	Journal club: Imaging tunable quantum Hall broken-symmetry orders in graphene
19/05/22	Morad Ebrahimkhas	Journal club: Bosonic Bott Index and Disorder-Induced Topological Transitions of Magnons
12/05/22	Arijit Dutta ; Mathieu Barbier	Journal club: Breakdown of quantisation in a Hubbard-Thouless pump ; Breakdown of topological Thouless pumping in the strongly interacting regime ; Splitting of topological charge pumping in an interacting two-component fermionic Rice-Mele Hubbard model
05/05/22	Irakli Titvinidze	Journal club: Phase diagram of superconductivity in the integer quantum Hall regime
	Youjiang Xu	Journal club: Spectral functions of the half-filled 1D Hubbard chain within the exchange-correlation potential formalism
28/04/22	Morad Ebrahimkhas	Status report
	Teodora Niculae	Status report
21/04/22	Arijit Dutta	Journal club: Topological Frequency Conversion in Strongly Driven Quantum Systems
	Mathieu Barbier	Journal club: Accessing the topological Mott insulator in cold atom quantum simulators with realistic Rydberg dressing
14/04/22	Irakli Titvinidze	Hubbard model on the kagome lattice with time-reversal invariant flux and spin-orbit coupling ; Spin-orbit coupling in the kagome lattice with flux and time-reversal symmetry

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Winter Semester 2021/2022