Theoretical High Energy Physics

What are the microscopic degrees of freedom in quantum gravity and how does the gravitational force emerge from them?

Can we find and solve interesting holographic models of quantum gravity?

What really happens at black hole horizons in quantum gravity?

How hard it is to prepare states in quantum field theory using limited resources and what does it teach us about quantum gravity?

How to describe far from equilibrium quantum fields from first principles? What are patterns of thermalization in quantum field theory?

These are some of the fascinating questions at the frontier of our understanding of the universe that our group is investigating.

Research

People

- Faculty -

Michal P. Heller

My interests lie in broadly-understood emergent phenomena in quantum field theories. I am using tools from quantum information science to understand how dynamical spacetime emerges from quantum field theory within holography. I am also studying universal behaviors arising in thermalization processes of quantum fields, such as relativistic hydrodynamics and non-thermal fixed points.

Thomas Mertens

My research interests are in quantum gravity, black hole physics, holography and string theory. In particular, I am driven by the mysteries surrounding black holes and their horizons in quantum gravity. The concrete approach I am pursuing is that of exactly solvable lower-dimensional holographic gravity models (such as Jackiw-Teitelboim (JT) gravity and its cousins), where explicit quantum gravitational calculations can be done and interpreted. This research program is supported by the ERC Starting Grant BHHQG.

My earlier work focused on other aspects of black hole quantum physics, including string theoretic descriptions of the stretched horizon and black hole entropy, and the role of edge states in the entanglement entropy of bulk fields across the black hole horizon.

- Post-docs -

We will have one or more postdoc positions available to start in the Fall of 2023.
To apply, please use the joint postdoc application with deadline November 30 2022.

- PhD STUDENTS -

Francesca Mariani
Francesca Mariani
吴奇峰 (Qi-Feng Wu)

My interests are mainly focused on quantum gravity and quantum information. I am trying to use ideas from information theory to understand how gravity emerges from quantum mechanics. In order to achieve this goal, the key is to understand the gravitational correspondence of some information theoretic concepts, including entanglement, complexity, quantum error correction, etc.

- MSc STUDENTS -

Andreas Belaey
Andreas Belaey

Thesis topic:
Jackiw-Teitelboim gravity, replica wormholes and the information paradox.

Boris De Vos
Boris De Vos

Thesis topic:
Multi-universes, the c = 1 matrix model, and 2d gravity.

Silke Van der Schueren
Silke Van der Schueren

Thesis topic:
Complexity: new window on the emergence of spacetime.

Information for Prospective MSc Students

MSc Thesis Subjects 2022

We will be offering several MSc topics for 2023/2024 that will become available in due course. For now, interested students are invited to consult the list of topics offered for 2022/2023 to get an overall picture what kind of projects they may expect.

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Teaching

Our group provides several Master's courses in the Physics and Astronomy program.

Taught by Thomas Mertens and offered every year in the first term.

Mandatory course
Language: Dutch

Taught by Michal P. Heller and offered every second year in the first term (the next course starts in September 2022).

Optional course
Language: English

Taught by Michal P. Heller and offered every second year in the second term (the next course starts in February 2024).

Optional course
Language: English

Calendar

Contact

Theoretical High Energy Physics

The group is located on the second floor in the building S9 on Campus Sterre.

Our visiting address:

Department of Physics and Astronomy
Ghent University
Krijgslaan 281 S9
B-9000 Gent, Belgium

Write us

hepth@ugent.be