We have used a quantum processor to reveal a new kind of ergodicity breaking -- the quantum many-body analog of mixed phase space. www.nature.com/articles/s41... Thanks to @leverhulme.ac.uk and @kitp-ucsb.bsky.social for support.
Quantum Many-Body Physics @ Leeds
@theoryleeds.bsky.social
https://theory.leeds.ac.uk/zlatko-papic/
Our paper on the quantum Mpemba effect in long-range interacting systems is now available in PRB journals.aps.org/prb/abstract... @leverhulme.ac.uk
How do you regularize a quantum field theory and study its spectrum? Put it on a noncommutative geometry! As a bonus, you can then study how the theory evolves when the spatial dimension continuously changes. More in our new preprint: arxiv.org/abs/2608.07655 @leverhulme.ac.uk
How do faithfully quantum simulate disorder-free localization in lattice gauge theories? What is the minimal number and structure of gauge fields required? Motivated by a recent Google Quantum AI experiment, we answer this question in our new paper: arxiv.org/abs/2607.26156 @theoryleeds.bsky.social
Our new preprint arxiv.org/abs/2607.14223 shows how a quantum processor can autonomously discover a new kind of ergodicity breaking: the quantum many-body analog of mixed phase space. @leverhulme.ac.uk
Supersymmetric field theories play an important role for both condensed matter and high energy physics. Our recent @physrevlett.aps.org shows how to realise them in (2+1) dimensions using the fuzzy sphere. @leverhulme.ac.uk journals.aps.org/prl/abstract...
Our recent collaboration with Yazdani Lab shows that STM can visualize anyons trapped around an impurity, opening the door to a better control and understanding of these fascinating topological particles. arxiv.org/abs/2606.25024 @leverhulmetrust.bsky.social
In our new preprint arxiv.org/abs/2606.25889 we study 2D false-vacuum decay on @dwavequantum.bsky.social quantum annealer and identify a regime where the spreading of bubbles is described by KPZ superdiffusion. @leverhulme.ac.uk @jdesaules.bsky.social
Our paper on the universality of magic at criticality has just appeared in @apsphysics.bsky.social PRB journals.aps.org/prb/abstract... @leverhulme.ac.uk
In our latest preprint we show that effective Hamiltonian, constructed during MPS/DMRG variational optimisations, captures ergodicity breaking phenomena such as many-body localisation and quantum many-body scars. arxiv.org/abs/2603.26870 @leverhulmetrust.bsky.social
Our work on the emergence of a 3D Majorana fermion in quantum Hall bilayers has just appeared in @physrevlett.bsky.social Nice to see the fuzzy sphere contributing to long-standing experiemental problems in FQHE journals.aps.org/prl/abstract... @leverhulme.ac.uk
Entanglement reveals universal physics near criticality. But what about magic -- a key resource for quantum computation? In arxiv.org/abs/2602.15116 we introduce the “magic correlation length” that captures universal nonstabilizer correlations. @leverhulme.ac.uk
Our realization of the free scalar conformal field theory in 3D has just come out in @physrevlett.bsky.social Thanks to our PhD student Joe Taylor and collaborator Ruihua Fan for this nice work. @leverhulmetrust.bsky.social journals.aps.org/prl/abstract...
Our second New Year's arXiv preprint shows how a supersymmetric 3D conformal field theory can emerge at a quantum critical point on a fuzzy sphere. arxiv.org/abs/2512.25054 Thanks to Cristian Voinea and Wei Zhu's group for this collaboration. @leverhulme.ac.uk
Our first contribution to the New Year's arXiv avalanche explores new regimes of thermalisation breakdown in gauge theories arxiv.org/abs/2512.23794 Many thanks to Quera Computing for their Rydberg atom quantum computer that made this work possible @leverhulme.ac.uk
Great to see our new algorithm ScarFinder in @prxquantum.bsky.social with the accompanying feature article "Quantum scars unmasked" physics.aps.org/articles/v18... @leverhulme.ac.uk
Quantum Scars Unmasked
A new approach finds useful patterns called quantum scars in the complex dynamics of quantum many-body systems.
physics.aps.org
Our first @physrevlett.bsky.social on noisy quantum many-body scars is now published online: journals.aps.org/prl/abstract... this is also our first PRL featuring End Matter @leverhulme.ac.uk
Symmetry breaking governs equilibrium physics, while dynamical symmetry restoration shapes nonequilibrium phenomena like the quantum Mpemba effect. Our new preprint explores how long-range interactions tune the interplay between the two: arxiv.org/abs/2510.12875 @leverhulme.ac.uk
Our recent @physrevb.bsky.social Letter and Editors' Suggestion demonstrates the ubiquity of the quantum Mpemba effect in many types of quantum systems. Thanks to our PhD student @tanmaybhore.bsky.social and @ucstonecenter.bsky.social collaborators. @leverhulme.ac.uk journals.aps.org/prb/abstract...
Majorana fermion is an elusive particle that is its own antiparticle. We used the new technique of the "fuzzy sphere" to show how the Majoranas can emerge in a quantum Hall bilayer system tuned to criticality. @leverhulme.ac.uk arxiv.org/abs/2509.08036
Looking forward to starting our 2-week program on quantum thermalization and its violations at the beautiful Instituto Principia (ICTP-SAIFR) in Sao Paulo! www.ictp-saifr.org/pqmbd2025/ @leverhulme.ac.uk
Wonderful to be back at ICTP to present our recent results on 3D conformal field theories, just before a storm kicked in. @leverhulme.ac.uk indico.ictp.it/event/10855/...
Our first fuzzy sphere paper is now available in @physrevx.bsky.social Thanks to our PhD student Cristian Voinea for these exciting results. journals.aps.org/prx/abstract... @leverhulme.ac.uk
Regularizing 3D Conformal Field Theories via Anyons on the Fuzzy Sphere
Simulations on a fuzzy sphere show that 3D Ising critical behavior persists even in fractional quantum Hall states, revealing a powerful method for studying conformal field theories amid topological o...
journals.aps.org
How do you get a free conformal field theory from a system of strongly interacting electrons? Our new fuzzy sphere paper by our PhD students, Joe and Cristian, gives one recipe. arxiv.org/abs/2506.22539 @leverhulme.ac.uk
Our work on magic in scar states is now published in @physrevb.bsky.social journals.aps.org/prb/pdf/10.1... Thanks to our postdoc Andrew Hallam and PhD student Ryan Smith for doing all the heavy lifting on this one! @leverhulme.ac.uk
It was fun leading a discussion on quantum thermalization in Rydberg atom arrays earlier today at @esivienna.bsky.social
Recently, the Mpemba effect -- hot water freezing faster than cold one -- has attracted much attention in quantum physics. In arxiv.org/abs/2505.17181 we argue that this effect is ubiquitous in a wide range of quantum systems and propose its simple diagnostic. @leverhulme.ac.uk
A lovely day to be in Garching for MPQ conference on quantum thermalization events.gwdg.de/event/879/ and to present some updates on recent mysteries of thermalization in Rydberg atom arrays. @leverhulmetrust.bsky.social
Delighted to announce our paper has just been published in Communications Physics - where we elucidate the mechanism behind some intriguing phenomena in the strong-coupling limit of a 1D lattice gauge theory. @tanmaybhore.bsky.social @theoryleeds.bsky.social www.nature.com/articles/s42... ⚛️🧪
Hilbert space fragmentation at the origin of disorder-free localization in the lattice Schwinger model - Communications Physics
Quantum electrodynamics on a one-dimensional lattice can lead to the localization of charges, in contrast to the thermalizing dynamics ubiquitous in nature. In this work the authors identify the physi...
nature.com
Poster session at QuSymDyn, Munich! Come speak to me if you want to know more about disorder-free localisation in the Schwinger model :)
Meet ScarFinder -- our new algorithm for detecting initial conditions that defy thermalization in general chaotic models. arxiv.org/abs/2504.12383 @leverhulme.ac.uk