Department of Mathematics and Computer Science

Meeting notice with time and agenda will be sent by email.

Speaker: ​Guglielmo Lockhart (University of Bonn).​Abstract: General principles suggest that the spectrum of excitations of quantum gravity theories includes not just pointlike particles, but also higher-dimensional membranes. In this talk I will focus on a specific class of one-dimensional membranes, the faithful strings, whose properties can be described using the language of vertex operator algebras. I will discuss how this mathematical structure encodes symmetries of quantum gravity theories, and makes it possible to determine refined information like gauge group topology. Moreover, I will show that modular invariance of the faithful string torus partition function is a powerful tool to detect inconsistencies in a candidate quantum gravity theory, or conversely to identify apparently consistent quantum gravities and study their properties. This provides an exciting opportunity to study exotic quantum gravity models that do not admit any known weakly coupled realization within string theory, in supersymmetric as well as non-supersymmetric settings.

Meet the critically acclaimed British author Zadie Smith at SDU on Monday, October 5, for a discussion about her writing and a reading from selected works.

The Wilder Garden has soon been part of SDU for a year, and we’d like to mark the occasion with you.

Speaker: Ben Brown (​IBM).Abstract: TBA

Movement Day 2026 offers a wide range of activities across SDU. Find your favourite and join your colleagues for an active day together.

Movement Day 2026 offers a wide range of activities across SDU. Find your favourite and join your colleagues for an active day together.

Movement Day 2026 offers a wide range of activities across SDU. Find your favourite and join your colleagues for an active day together.

Movement Day 2026 offers a wide range of activities across SDU. Find your favourite and join your colleagues for an active day together.

Movement Day 2026 offers a wide range of activities across SDU. Find your favourite and join your colleagues for an active day together.

Movement Day 2026 offers a wide range of activities across SDU. Find your favourite and join your colleagues for an active day together.

Speaker: Ben Brown (​IBM).Abstract:In seminal work (arXiv:quant-ph/9707021) Alexei Kitaev proposed topological quantum computing (arXiv:cond-mat/0010440, arXiv:quant-ph/9707021, arXiv:quant-ph/0001108, arXiv:0707.1889), whereby logic gates of a quantum computer are conducted by creating, braiding and fusing anyonic particles on a two-dimensional plane. Furthermore, he showed the proposal is inherently robust to local perturbations (arXiv:cond-mat/0010440, arXiv:quant-ph/9707021, arXiv:1001.0344, arXiv:1001.4363) when anyons are created as quasiparticle excitations of a topologically ordered lattice model prepared at zero temperature. Over the decades following this proposal there have been considerable technological developments towards the construction of a fault-tolerant quantum computer. Rather than maintaining some target ground state at zero temperature, a modern approach is to actively correct the errors a target state experiences, where we use noisy quantum circuit elements to identify and subsequently correct for deviations from the ideal state. We present an error-correction scheme that enables us to carry out robust universal quantum computation by braiding anyons. We show that our scheme can be carried out on a suitably large device with an arbitrarily small failure rate assuming circuit elements are below some threshold level of local noise. The error-corrected scheme we have developed therefore enables us to carry out fault-tolerant topological quantum computation using modern quantum hardware that is now under development.

Read more about the Teaching Committee: https://www.sdu.dk/da/om_sdu/institutter_centre/imada_matematik_og_datalogi/ledelse_administration/raad_naevn_udvalg/undervisningsudvalg

Shomrik Bhattacharya defends his PhD thesis at a public lecture: “The Fundamental Group of the Complement of the Wobbly Divisor in the Intersection of Two Quadrics”.The chairman of the assessment committee, Associate Professor Fabian Haiden, will act as chairman at the defence.The PhD defence takes place in IMADA Conference Room (Ø18-509-2).All are welcome.

Poster Session and presentation

All staff at IMADA are invited to the Departmental Forum.Meeting notice and agenda will be sent by email.

Are you planning to lead a Horizon Europe application in 2027? Don’t miss the opportunity to apply for the remaining collaborative calls in Horizon Europe.

Meeting notice with time and agenda will be sent by email.

Read more about the Department Council: https://sdunet.dk/en/enheder/institutter/imada/udvalg-og-moeder/institutraad

TBA

Read more about the Teaching Committee: https://www.sdu.dk/da/om_sdu/institutter_centre/imada_matematik_og_datalogi/ledelse_administration/raad_naevn_udvalg/undervisningsudvalg

All staff at IMADA are invited to the Departmental Forum.Meeting notice and agenda will be sent by email.

Meeting notice with time and agenda will be sent by email.

Read more about the Teaching Committee: https://www.sdu.dk/da/om_sdu/institutter_centre/imada_matematik_og_datalogi/ledelse_administration/raad_naevn_udvalg/undervisningsudvalg

All staff at IMADA are invited to the Departmental Forum.Meeting notice and agenda will be sent by email.

Meeting notice with time and agenda will be sent by email.