QTC Journal Club: Lorentzian-Euclidean black holes: a way to avoid singularities
Speaker: Emmanuele Battista, Postdoc
Abstract: In this seminar, we investigate a Schwarzschild metric whose signature changes upon crossing the event horizon. In particular, when r > 2M the metric has the usual Lorentzian signature; then, at r = 2M it becomes degenerate, and when r < 2M it attains the ultrahyperbolic signature. In this scenario, the time variable is real-valued outside the event horizon and becomes imaginary inside it. This geometry gives rise to what we term a Lorentzian-Euclidean black hole. The underlying Riemann tensor exhibits Dirac-delta-like singularities which we regularize by employing the Hadamard partie finie technique. In this way, we demonstrate that the Lorentzian-Euclidean metric represents a solution of the vacuum Einstein equations. The analysis of the motion of radially moving observers reveals that the black-hole singularity can be avoided. The seminar is based on ArXiv: 2404.17267.
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
IMADA Talks
Want to know what is going on behind the scenes at IMADA?
Come and join us for 2 x 20 min. inspiring talks while you enjoy a free “casual after-work” beer with your fellow student, colleague or teacher.
Speakers will be announced ASAP, but mark your calendar now!
QM Research Seminar: Geometry and incompleteness of G2-moduli spaces
Speaker: Thibault Langlais (University of Oxford)
Abstract:
The Lie group G2 is one of the two exceptional cases in Berger's list of possible Riemannian holonomy groups. I will start by introducing the basics of G2-geometry, emphasizing its relation to Calabi-Yau geometry in (real) dimension 4 and 6. The moduli spaces of G2-manifolds are smooth and carry a natural Riemannian metric, analogous to the Weil-Petersson metric, whose properties are poorly understood. I will show that certain singular G2-manifolds correspond to finite-distance limits in the moduli spaces, which proves that G2-moduli spaces are generally not complete. Time permitting, I will also say a few words about the computation of curvatures.
QM Research Seminar: TBA
Speaker: Mykola Dedushenko (Simons Center for Geometry and Physics, Stony Brook)
Abstract:
TBA
QTC Journal Club: TBA
Speaker: Giuseppe Fabiano, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
EuroVis 2024: Where Words Fail, Visualization Speaks
Join the EuroVis 2024 Conference Where Words Fail, Visualization Speaks and explore the world of data visualization and collaborate with experts in this vibrant field.
Don’t miss this opportunity to expand your knowledge and connections in the world of visualization!
Read more: https://www.eurovis.org/eurovis/conference
PhD defence @IMADA: Tim Henke
Tim Henke defends his PhD thesis: Geometry of Parabolic Moduli Spaces and the Hitchin-KZ Equivalence.
Assistant professor Fabian Haiden will act as chairman at the defence.
QTC Journal Club: TBA
Speaker: Davide Iacobacci, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
End of academic year @IMADA – for all students and employees
We end the academic year at IMADA with strawberry cake, wine, water, beer, snacks and lots of summer mood 😃!
Read more on Facebook.
MAPSP 2024 – workshop on Models and Algorithms for Planning and Scheduling Problems
Explore planning and scheduling solutions at MAPSP 2024 in Kolding, Denmark.
Join us for insightful discussions on theoretical and practical aspects!
QTC Journal Club: TBA
Speaker: Manuel Del Piano, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Marika D’Avanzo, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Sofie Antonia Martins, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Alessandra D’Alise, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Alessandra D’Alise, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Giacomo Cacciapaglia, Senior Researcher
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Giulia Muco, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Domenico Frattulillo, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
TAL2024 - Conference on Teaching for Active Learning
This year's special theme: Supervision
TAL2024 - Conference on Teaching for Active Learning
This year's special theme: Supervision
QTC Journal Club: TBA
Speaker: Mattia Damia Paciarini, PhD student
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Antonio Rago, Associate Professor
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.
QTC Journal Club: TBA
Speaker: Benjamin Jäger, Associate Professor
Abstract: TBA
Location: The DIAS Meetingroom Syd (V22-503a-2)
You can also join via Zoom (passcode: 060379).
The event is open to all.