Heyl Group
@heylgroup.bsky.social
Quantum theory. Account of my research group at the University of Augsburg:
https://www.uni-augsburg.de/en/fakultaet/mntf/physik/groups/theo3/
https://www.uni-augsburg.de/en/fakultaet/mntf/physik/groups/theo3/
Active quantum flocks
Flocks of animals are an archetype of collective behavior in the macroscopic world. Here, we show that flocks can also form at the quantum level with unique quantum features:
doi.org/10.1103/rd46...
Novel nonequilibrium phase of matter realizable in #Rydberg atomic systems.
Flocks of animals are an archetype of collective behavior in the macroscopic world. Here, we show that flocks can also form at the quantum level with unique quantum features:
doi.org/10.1103/rd46...
Novel nonequilibrium phase of matter realizable in #Rydberg atomic systems.
Active Quantum Flocks
Flocks of animals represent a prominent archetype of collective behavior in the macroscopic classical world, where the constituents, such as birds, concertedly perform motions and actions as if being ...
doi.org
December 15, 2025 at 2:51 PM
Active quantum flocks
Flocks of animals are an archetype of collective behavior in the macroscopic world. Here, we show that flocks can also form at the quantum level with unique quantum features:
doi.org/10.1103/rd46...
Novel nonequilibrium phase of matter realizable in #Rydberg atomic systems.
Flocks of animals are an archetype of collective behavior in the macroscopic world. Here, we show that flocks can also form at the quantum level with unique quantum features:
doi.org/10.1103/rd46...
Novel nonequilibrium phase of matter realizable in #Rydberg atomic systems.
Reposted by Heyl Group
Scientific discovery relies on a cycle of observations, analysis, and coming up with new hypotheses. Can a computer mimic that cycle and explore an unknown system in this way?
We introduce #sciexplorer, which for the first time employs agentic behaviour in […]
[Original post on fediscience.org]
We introduce #sciexplorer, which for the first time employs agentic behaviour in […]
[Original post on fediscience.org]
October 3, 2025 at 11:18 AM
Scientific discovery relies on a cycle of observations, analysis, and coming up with new hypotheses. Can a computer mimic that cycle and explore an unknown system in this way?
We introduce #sciexplorer, which for the first time employs agentic behaviour in […]
[Original post on fediscience.org]
We introduce #sciexplorer, which for the first time employs agentic behaviour in […]
[Original post on fediscience.org]
Reposted by Heyl Group
EPFL are recruiting a tenure track assistant proff working on the theory of condensed matter and interacting quantum matter:
www.epfl.ch/about/workin...
Feel free to reach out if you have any questions about life at EPFL/in Switzerland etc.
www.epfl.ch/about/workin...
Feel free to reach out if you have any questions about life at EPFL/in Switzerland etc.
Faculty Position in Theory of Condensed Matter and Interacting Quantum Matter
The School of Basic Sciences (Physics, Chemistry and Mathematics) at EPFL seeks to appoint a Tenure Track Assistant Professor in condensed matter theory with a focus on interacting quantum matter. Can...
www.epfl.ch
July 24, 2025 at 4:07 PM
EPFL are recruiting a tenure track assistant proff working on the theory of condensed matter and interacting quantum matter:
www.epfl.ch/about/workin...
Feel free to reach out if you have any questions about life at EPFL/in Switzerland etc.
www.epfl.ch/about/workin...
Feel free to reach out if you have any questions about life at EPFL/in Switzerland etc.
Reposted by Heyl Group
Springboard for an international scientific career! 🧬🧪🔭⚛️🧠🌱 Call for #MaxPlanckResearchGroups launched; applications are possible until October 14, 2025 www.mpg.de/max-planck-r... #ScienceCareer
September 9, 2025 at 12:10 PM
Springboard for an international scientific career! 🧬🧪🔭⚛️🧠🌱 Call for #MaxPlanckResearchGroups launched; applications are possible until October 14, 2025 www.mpg.de/max-planck-r... #ScienceCareer
Reposted by Heyl Group
The #MaxPlanckPostdocProgram offers a guaranteed contract of at least 3 years, targeted mentoring, and career workshops. The call for applications is open now! 🚀 Take advantage of this opportunity and browse the job vacancies. www.mpg.de/en/max-planc...
September 1, 2025 at 8:46 AM
The #MaxPlanckPostdocProgram offers a guaranteed contract of at least 3 years, targeted mentoring, and career workshops. The call for applications is open now! 🚀 Take advantage of this opportunity and browse the job vacancies. www.mpg.de/en/max-planc...
Reposted by Heyl Group
June 27, 2025 at 10:01 PM
Interfaces are key to understand the physics of matter. Remarkably, (only) in 2D #quantum systems interfaces can undergo their own phase transition. The dynamical signatures of this #roughening we study in our latest PRL:
link.aps.org/doi/10.1103/...
Readily accessible in #Rydberg systems.
link.aps.org/doi/10.1103/...
Readily accessible in #Rydberg systems.
Roughening Dynamics of Interfaces in the Two-Dimensional Quantum Ising Model
The properties of interfaces are key to understanding the physics of matter. However, the study of quantum interface dynamics has remained an outstanding challenge. Here, we use large-scale tree tenso...
link.aps.org
June 20, 2025 at 3:18 PM
Interfaces are key to understand the physics of matter. Remarkably, (only) in 2D #quantum systems interfaces can undergo their own phase transition. The dynamical signatures of this #roughening we study in our latest PRL:
link.aps.org/doi/10.1103/...
Readily accessible in #Rydberg systems.
link.aps.org/doi/10.1103/...
Readily accessible in #Rydberg systems.
Review on solving dynamics of quantum matter by means of neural quantum states #NQS out now:
arxiv.org/abs/2506.03124
#machinelearning boosts real-time simulations in #quantum many-body systems, in particular in the challenging regime of two spatial dimensions.
arxiv.org/abs/2506.03124
#machinelearning boosts real-time simulations in #quantum many-body systems, in particular in the challenging regime of two spatial dimensions.
Simulating dynamics of correlated matter with neural quantum states
While experimental advancements continue to expand the capabilities to control and probe non-equilibrium quantum matter at an unprecedented level, the numerical simulation of the dynamics of correlate...
arxiv.org
June 4, 2025 at 1:48 PM
Review on solving dynamics of quantum matter by means of neural quantum states #NQS out now:
arxiv.org/abs/2506.03124
#machinelearning boosts real-time simulations in #quantum many-body systems, in particular in the challenging regime of two spatial dimensions.
arxiv.org/abs/2506.03124
#machinelearning boosts real-time simulations in #quantum many-body systems, in particular in the challenging regime of two spatial dimensions.
Reposted by Heyl Group
We have several open, fully-funded PhD and Postdoc positions at my group, now at the University of Tübingen. Please #RT and share with potential candidates!
Generally: AI for scientific discoveries in physics 🔥.
mariokrenn.wordpress.com/wp-content/u...
Generally: AI for scientific discoveries in physics 🔥.
mariokrenn.wordpress.com/wp-content/u...
mariokrenn.wordpress.com
May 27, 2025 at 11:25 PM
We have several open, fully-funded PhD and Postdoc positions at my group, now at the University of Tübingen. Please #RT and share with potential candidates!
Generally: AI for scientific discoveries in physics 🔥.
mariokrenn.wordpress.com/wp-content/u...
Generally: AI for scientific discoveries in physics 🔥.
mariokrenn.wordpress.com/wp-content/u...
Many-body cages: a novel mechanism for nonergodicity and nonequilibrium phases based on the emergence of flat bands in the many-body spectrum of constrained quantum matter. Yields disorder-free spin glasses and leads to coherent many-body Rabi-type oscillations:
arxiv.org/abs/2504.13086
arxiv.org/abs/2504.13086
Many-body cages: disorder-free glassiness from flat bands in Fock space, and many-body Rabi oscillations
We identify the many-body counterpart of flat bands, which we call many-body caging, as a general mechanism for non-equilibrium phenomena such as a novel type of glassy eigenspectrum order and many-bo...
arxiv.org
April 18, 2025 at 9:42 AM
Many-body cages: a novel mechanism for nonergodicity and nonequilibrium phases based on the emergence of flat bands in the many-body spectrum of constrained quantum matter. Yields disorder-free spin glasses and leads to coherent many-body Rabi-type oscillations:
arxiv.org/abs/2504.13086
arxiv.org/abs/2504.13086
Fractional diffusion without disorder: Local gauge constraints in 2D induce robust, tunable #subdiffusion dynamics. Relevant for platforms like artificial spin ice and quantum simulators aiming to realize discrete link models and emergent #gauge theories:
doi.org/10.48550/arX...
doi.org/10.48550/arX...
Fractional diffusion without disorder in two dimensions
We analyse how simple local constraints in two dimensions lead a defect to exhibit robust, non-transient, and tunable, subdiffusion. We uncover a rich dynamical phenomenology realised in ice- and dime...
doi.org
April 2, 2025 at 9:35 AM
Fractional diffusion without disorder: Local gauge constraints in 2D induce robust, tunable #subdiffusion dynamics. Relevant for platforms like artificial spin ice and quantum simulators aiming to realize discrete link models and emergent #gauge theories:
doi.org/10.48550/arX...
doi.org/10.48550/arX...
The dynamics in the 2D quantum hard-disk model exhibits nonergodic behavior just due quantum interference effects. We now show that these survive even perturbations, highlighting the unconventional constrained dynamics of the quantum hard disk model:
doi.org/10.48550/arX...
doi.org/10.48550/arX...
Dynamics of defects and interfaces for interacting quantum hard disks
Defects and interfaces are essential to understand the properties of matter. However, studying their dynamics in the quantum regime remains a challenge in particular concerning the regime of two spati...
doi.org
March 20, 2025 at 10:15 AM
The dynamics in the 2D quantum hard-disk model exhibits nonergodic behavior just due quantum interference effects. We now show that these survive even perturbations, highlighting the unconventional constrained dynamics of the quantum hard disk model:
doi.org/10.48550/arX...
doi.org/10.48550/arX...
Recording the measurements in monitored quantum dynamics provides insights into the monitored system itself. #unsupervisedlearning shows that information loss due to enhanced entanglement is compensated by emergent structure in classical datasets of measurements:
doi.org/10.48550/arX...
doi.org/10.48550/arX...
Probing prethermal nonergodicity through measurement outcomes of monitored quantum dynamics
Projective measurements are a key element in quantum physics and enable rich phenomena in monitored quantum dynamics. Here, we show that the measurement outcomes, recorded during monitored dynamics, c...
doi.org
March 19, 2025 at 7:15 PM
Recording the measurements in monitored quantum dynamics provides insights into the monitored system itself. #unsupervisedlearning shows that information loss due to enhanced entanglement is compensated by emergent structure in classical datasets of measurements:
doi.org/10.48550/arX...
doi.org/10.48550/arX...
Convolutional transformer wave functions
New type of neural quantum state enables solution of challenging quantum many-body problems with superior performance in both ground-state searches and dynamics. Check preprint at the interface between #quantum and #machinelearning:
doi.org/10.48550/arX...
New type of neural quantum state enables solution of challenging quantum many-body problems with superior performance in both ground-state searches and dynamics. Check preprint at the interface between #quantum and #machinelearning:
doi.org/10.48550/arX...
Convolutional transformer wave functions
Deep neural quantum states have recently achieved remarkable performance in solving challenging quantum many-body problems. While transformer networks appear particularly promising due to their succes...
doi.org
March 14, 2025 at 3:31 PM
Convolutional transformer wave functions
New type of neural quantum state enables solution of challenging quantum many-body problems with superior performance in both ground-state searches and dynamics. Check preprint at the interface between #quantum and #machinelearning:
doi.org/10.48550/arX...
New type of neural quantum state enables solution of challenging quantum many-body problems with superior performance in both ground-state searches and dynamics. Check preprint at the interface between #quantum and #machinelearning:
doi.org/10.48550/arX...
Probing quantum many-body dynamics using subsystem Loschmidt echos
Experimentally accessing the Loschmidt echo reveals dynamical phase transitions & Hilbert space fragmentation in quantum gases. Promising tool for exploring non-equilibrium dynamics, check out here:
doi.org/10.48550/arX...
Experimentally accessing the Loschmidt echo reveals dynamical phase transitions & Hilbert space fragmentation in quantum gases. Promising tool for exploring non-equilibrium dynamics, check out here:
doi.org/10.48550/arX...
Probing quantum many-body dynamics using subsystem Loschmidt echos
The Loschmidt echo - the probability of a quantum many-body system to return to its initial state following a dynamical evolution - generally contains key information about a quantum system, relevant ...
doi.org
January 29, 2025 at 10:28 AM
Probing quantum many-body dynamics using subsystem Loschmidt echos
Experimentally accessing the Loschmidt echo reveals dynamical phase transitions & Hilbert space fragmentation in quantum gases. Promising tool for exploring non-equilibrium dynamics, check out here:
doi.org/10.48550/arX...
Experimentally accessing the Loschmidt echo reveals dynamical phase transitions & Hilbert space fragmentation in quantum gases. Promising tool for exploring non-equilibrium dynamics, check out here:
doi.org/10.48550/arX...
Quantum hard disks
Quantum counterpart of hard disks on a lattice yields unique quantum features. Quantum interference stabilizes crystals and leads to emergence of quantum many-body scars. Naturally realizable in Rydberg atomic systems, check it out here:
doi.org/10.1103/Phys...
Quantum counterpart of hard disks on a lattice yields unique quantum features. Quantum interference stabilizes crystals and leads to emergence of quantum many-body scars. Naturally realizable in Rydberg atomic systems, check it out here:
doi.org/10.1103/Phys...
Quantum hard disks on a lattice
We formulate a quantum version of the hard-disk problem on lattices, which exhibits a natural realization in systems of Rydberg atoms. We find that quantum hard disks exhibit unique dynamical quantum ...
doi.org
January 16, 2025 at 6:56 AM
Quantum hard disks
Quantum counterpart of hard disks on a lattice yields unique quantum features. Quantum interference stabilizes crystals and leads to emergence of quantum many-body scars. Naturally realizable in Rydberg atomic systems, check it out here:
doi.org/10.1103/Phys...
Quantum counterpart of hard disks on a lattice yields unique quantum features. Quantum interference stabilizes crystals and leads to emergence of quantum many-body scars. Naturally realizable in Rydberg atomic systems, check it out here:
doi.org/10.1103/Phys...
Reposted by Heyl Group
Hello Bluesky! We're very excited to start sharing our research here, and connect with the #quantum #matter community ⚛️ Say hello below if you work on ultracold physics, or let us know who to follow here!
Welcome @ferlainogroup.bsky.social here! Francesca Ferlaino and her team focus on ultracold strongly magnetic Lanthanides for realizing dipolar #quantum #matter.
January 13, 2025 at 10:22 AM
Roughening dynamics in 2D quantum matter
Interfaces are key to understand the physics of matter. In our latest preprint we study the dynamical signatures of the interface roughening transition in the 2D quantum Ising model:
doi.org/10.48550/arX...
Readily accessible in Rydberg atomic systems.
Interfaces are key to understand the physics of matter. In our latest preprint we study the dynamical signatures of the interface roughening transition in the 2D quantum Ising model:
doi.org/10.48550/arX...
Readily accessible in Rydberg atomic systems.
Roughening dynamics of interfaces in two-dimensional quantum matter
The properties of interfaces are key to understand the physics of matter. However, the study of quantum interface dynamics has remained an outstanding challenge. Here, we use large-scale Tree Tensor N...
doi.org
December 16, 2024 at 8:00 AM
Roughening dynamics in 2D quantum matter
Interfaces are key to understand the physics of matter. In our latest preprint we study the dynamical signatures of the interface roughening transition in the 2D quantum Ising model:
doi.org/10.48550/arX...
Readily accessible in Rydberg atomic systems.
Interfaces are key to understand the physics of matter. In our latest preprint we study the dynamical signatures of the interface roughening transition in the 2D quantum Ising model:
doi.org/10.48550/arX...
Readily accessible in Rydberg atomic systems.
Reposted by Heyl Group
Hi Bluesky! I'd like to begin my journey in this platform by advertising this school I am currently co-organizing:
The Winter School on Ultracold Quantum Many-body Systems ❄️⚛️ (16-22 Feb 2025) is open for registration! The school will take place at the Centro de Ciencias de Benasque Pedro Pascual🏔️.
The Winter School on Ultracold Quantum Many-body Systems ❄️⚛️ (16-22 Feb 2025) is open for registration! The school will take place at the Centro de Ciencias de Benasque Pedro Pascual🏔️.
November 25, 2024 at 4:10 PM
Hi Bluesky! I'd like to begin my journey in this platform by advertising this school I am currently co-organizing:
The Winter School on Ultracold Quantum Many-body Systems ❄️⚛️ (16-22 Feb 2025) is open for registration! The school will take place at the Centro de Ciencias de Benasque Pedro Pascual🏔️.
The Winter School on Ultracold Quantum Many-body Systems ❄️⚛️ (16-22 Feb 2025) is open for registration! The school will take place at the Centro de Ciencias de Benasque Pedro Pascual🏔️.
Reposted by Heyl Group
We are organizing a workshop on ML for quantum matter in Dresden in February 2025. The application deadline is Nov. 30, apply! www.pks.mpg.de/mlqmat25
Max Planck Institute for the Physics of Complex Systems Machine Learning for Quantum Matter
www.pks.mpg.de
November 27, 2024 at 12:44 PM
We are organizing a workshop on ML for quantum matter in Dresden in February 2025. The application deadline is Nov. 30, apply! www.pks.mpg.de/mlqmat25
Subsystem Evolution Speed as Indicator of Relaxation
New method to probe relaxation in quantum matter. No need to have a priori knowledge about relaxed steady state, just need to calculate how fast reduced density matrices evolve in time:
doi.org/10.48550/arX...
New method to probe relaxation in quantum matter. No need to have a priori knowledge about relaxed steady state, just need to calculate how fast reduced density matrices evolve in time:
doi.org/10.48550/arX...
Subsystem Evolution Speed as Indicator of Relaxation
In studying the time evolution of isolated many-body quantum systems, a key focus is determining whether the system undergoes relaxation and reaches a steady state at a given point in time. Traditiona...
doi.org
October 31, 2024 at 4:40 PM
Subsystem Evolution Speed as Indicator of Relaxation
New method to probe relaxation in quantum matter. No need to have a priori knowledge about relaxed steady state, just need to calculate how fast reduced density matrices evolve in time:
doi.org/10.48550/arX...
New method to probe relaxation in quantum matter. No need to have a priori knowledge about relaxed steady state, just need to calculate how fast reduced density matrices evolve in time:
doi.org/10.48550/arX...
Adaptive Trotterization for Time-Dependent Hamiltonian Quantum Dynamics
We introduce an adaptive Trotterization algorithm for simulating time-dependent Hamiltonians on quantum computers, using piecewise conserved quantities to control & estimate errors. Read our PRL here:
doi.org/10.1103/Phys...
We introduce an adaptive Trotterization algorithm for simulating time-dependent Hamiltonians on quantum computers, using piecewise conserved quantities to control & estimate errors. Read our PRL here:
doi.org/10.1103/Phys...
Adaptive Trotterization for Time-Dependent Hamiltonian Quantum Dynamics Using Piecewise Conservation Laws
Digital quantum simulation relies on Trotterization to discretize time evolution into elementary quantum gates. On current quantum processors with notable gate imperfections, there is a critical trade...
doi.org
October 28, 2024 at 3:57 PM
Adaptive Trotterization for Time-Dependent Hamiltonian Quantum Dynamics
We introduce an adaptive Trotterization algorithm for simulating time-dependent Hamiltonians on quantum computers, using piecewise conserved quantities to control & estimate errors. Read our PRL here:
doi.org/10.1103/Phys...
We introduce an adaptive Trotterization algorithm for simulating time-dependent Hamiltonians on quantum computers, using piecewise conserved quantities to control & estimate errors. Read our PRL here:
doi.org/10.1103/Phys...
Empowering deep neural quantum states through efficient optimization
Deep learning for quantum matter. Our new algorithm enables the training of massive neural networks in order to solve the quantum many-body problem with unprecedented accuracy.
doi.org/10.1038/s415...
Deep learning for quantum matter. Our new algorithm enables the training of massive neural networks in order to solve the quantum many-body problem with unprecedented accuracy.
doi.org/10.1038/s415...
Empowering deep neural quantum states through efficient optimization - Nature Physics
An optimization algorithm reduces the cost of training large-scale neural quantum states. This leads to accurate computations of the ground states of frustrated magnets and provides evidence of gaples...
doi.org
October 23, 2024 at 7:02 AM
Empowering deep neural quantum states through efficient optimization
Deep learning for quantum matter. Our new algorithm enables the training of massive neural networks in order to solve the quantum many-body problem with unprecedented accuracy.
doi.org/10.1038/s415...
Deep learning for quantum matter. Our new algorithm enables the training of massive neural networks in order to solve the quantum many-body problem with unprecedented accuracy.
doi.org/10.1038/s415...
Wave-Function Network Description and Kolmogorov Complexity of Quantum Many-Body Systems
Wave-function networks can become scale-free as we show for theoretical data obtained through neural quantum states and experimental data from a Rydberg quantum simulator:
journals.aps.org/prx/abstract...
Wave-function networks can become scale-free as we show for theoretical data obtained through neural quantum states and experimental data from a Rydberg quantum simulator:
journals.aps.org/prx/abstract...
Wave-Function Network Description and Kolmogorov Complexity of Quantum Many-Body Systems
A network-theory-based framework for describing quantum mechanical wave functions enables the discovery of a very deep inner structure---that of a scale-free network.
journals.aps.org
June 14, 2024 at 10:16 AM
Wave-Function Network Description and Kolmogorov Complexity of Quantum Many-Body Systems
Wave-function networks can become scale-free as we show for theoretical data obtained through neural quantum states and experimental data from a Rydberg quantum simulator:
journals.aps.org/prx/abstract...
Wave-function networks can become scale-free as we show for theoretical data obtained through neural quantum states and experimental data from a Rydberg quantum simulator:
journals.aps.org/prx/abstract...
Vortex loop dynamics and dynamical quantum phase transitions
During nonequilibrium dynamics vortices can form in the phase of the Green's function. In this work we show that these vortices form topological structures in the form of loops:
doi.org/10.1103/Phys...
During nonequilibrium dynamics vortices can form in the phase of the Green's function. In this work we show that these vortices form topological structures in the form of loops:
doi.org/10.1103/Phys...
Vortex loop dynamics and dynamical quantum phase transitions in three-dimensional fermion matter
Over the past decade, dynamical quantum phase transitions (DQPTs) have emerged as a paradigm shift in understanding nonequilibrium quantum many-body systems. However, the challenge lies in identifying...
doi.org
April 25, 2024 at 3:41 PM
Vortex loop dynamics and dynamical quantum phase transitions
During nonequilibrium dynamics vortices can form in the phase of the Green's function. In this work we show that these vortices form topological structures in the form of loops:
doi.org/10.1103/Phys...
During nonequilibrium dynamics vortices can form in the phase of the Green's function. In this work we show that these vortices form topological structures in the form of loops:
doi.org/10.1103/Phys...