News

07.11.2025

New Result

Variations on a Theme of Krylov by Vijay Balasubramanian (U. of Pennsylvania), Pawel Caputa and Joan Simon (U. of Edinburgh).

01.11.2025

Join Us!

Postdoctoral position in the ERC grant "Quantum Complexity from Quantum Field Theories to Quantum Gravity”.

Application deadline: 17.12.2025

30.10.2025

New Grant

We are grateful to The Swedish Research Council, Vetenskapsrådet for supporting our group with Research Project Grant "Quantum Complexity and Black Hole Interiors"!

02.10.2025

New Result

Modular theory and symmetry resolution in hyperfinite von Neumann algebras by Giuseppe Di Giulio, Moritz Dorband (MPI Garching), Johanna Erdmenger (U. Wurzburg), Henri Scheppach (U. Wurzburg).  

06.10.2025

PhD defence

Our first PhD student, Dimitrios Patramanis (U. of Warsaw) defended his thesis: “Complexity, holography and geometry”. Congratulations!   

16.09.2025

New Result

Symmetry-Resolved Spread Complexity by Pawel Caputa, Giuseppe Di Giulio and Tran Quang Loc.   

09.09.2025

New Result

The Effects of Near-AdS2 Backreaction on Matter Fields by Alejandra Castro (U. of Cambridge), Jildou Hollander (U. of Amsterdam), Pedro J. Martinez (U.N. de La Plata), Evita Verheijden.

06.09.2025

New Result

Gauge Invariants at Arbitrary N and Trace Relations by Pawel Caputa and Robert de Mello Koch (Huzhou U.).

01-05.09.2025

Let's meet!

Advanced school on complexity, integrability, and quantum chaos. Chaos and integrability are two extreme phenomena of physical systems which form cornerstones of many developments in high-energy physics and condensed matter, from black holes to many-body systems. The school will offer a bridge between these topics and related recent progress in condensed matter and high-energy physics. 

25-28.08.2025

Let's meet!

EUROSTRINGS 2025 - COST Action Theory-Challenges General Meeting. Eurostrings is a series of annual conferences gathering researchers from all over Europe and elsewhere, working on string theory, gauge/gravity duality, quantum gravity and quantum field theories, and the relations among them.

02.07.2025

New Result 

Growth of block-diagonal operators and symmetry-resolved Krylov complexity by Pawel Caputa Giuseppe Di Giulio and Tran Quang Loc.   

26.06.2025

New Result 

Complexity of PXP scars revisited by Pawel Caputa, Xuhao Jiang (LMU Munich), Sinong Liu (Yau Center, Tsinghua U.).

23-27.06.2025

Lets meet! 

Workshop: Holography, Operators and Finite N. Invited lecturers: Robert de Mello Koch (Huzhou U.) and Ji Hoon Lee (ETH, Zurich).

14.05.2025

New Review on Quantum Complexity! 

Quantum complexity in gravity, quantum field theory, and quantum information science  Stefano Baiguera (INFN, Perugia), Vijay Balasubramanian (U. of Pennsylvania), Pawel Caputa, Shira Chapman (Ben-Gurion U.), Jonas Haferkamp (Harvard U.), Michal P. Heller (Ghent U.), Nicole Yunger Halpern (U. of Maryland).

02.05.2025

New result

Exploring amplitude criteria for weak gravity in electroweak theory by Tran Quang Loc.

28.02.2025

New result

Local Quenches from a Krylov Perspective by Pawel Caputa and Giuseppe Di Giulio.

26.02.2025

New result

Measurement-induced symmetry restoration and quantum Mpemba effect by Giuseppe Di Giulio, Xhek Turkeshi (U. of Cologne) and Sara Murciano (U. Paris-Saclay).

27.12.2024

New result

Continuous majorization in quantum phase space with Wigner negativity by Giuseppe Di Giulio, Jan de Boer (U. of Amsterdam), Esko Keski-Vakkuri (U. Helsinki) and Erik Tonni (SISSA, Trieste).

13.11.2024

New result

Thermal pseudo-entropy by Pawel Caputa, Bowen Chen (KITP, CAS), Tadashi Takayanagi (YITP, Kyoto U.) and Takashi Tsuda (YITP, Kyoto U.).

01.11.2024

New result

Spread Complexity Rate as Proper Momentum by Pawel Caputa (Stockholm U.), Bowen Chen (KITP, CAS), Ross W. McDonald (U. of Edinburgh), Joan Simón (U. of Edinburgh), Benjamin Strittmatter (U. of Edinburgh).

01.11.2024

New result

Wormhole-induced effective coupling in SYK chains by Pablo Basteiro (U. Wurzburg), Giuseppe Di Giulio, Johanna Erdmenger (U. Wurzburg), René Meyer (U. Wurzburg), Zhuo-Yu Xian (U. Wurzburg).

31.10.2024

Join us! 

Two postdoctoral positions in the ERC grant Quantum Complexity from Quantum Field Theories to Quantum Gravity”.

Application deadline: 09.12.2024.

01.10.2024

Join us! 

Our group has just moved to Stockholm University. See the opening for a PhD position. Two postdoctoral positions will be announces soon via KU Leuven applications.

About Our Group

Our group is a part of the Faculty of Physics of Stockholm University and The Oscar Klein Centre, Stockholm, Sweden. It currently contains six members.

Our research lies at the intersection of quantum information, quantum field theory, holography and quantum gravity. At the moment we carry out two projects: ERC Consolidator Grant (Stockholm U.) „Quantum Complexity from Quantum Field Theories to Quantum Gravity (QComplexity)” and NCN Sonata Bis 9 (U. of Warsaw) „Quantum Information in Quantum Field Theories and Holography: Dynamics and Complexity”.