Researchers discovered a universal speed limit governing collective decay in many-body quantum systems. This fundamental constraint has implications for quantum technology scalability and applications relying on collective emission phenomena.
#QuantumScalability #ManyBodyPhysics #News
#QuantumScalability #ManyBodyPhysics #News
Universal Speed Limit for Collective Decay in Many-Body Quantum Systems
www.nature.com
September 25, 2026 at 12:56 PM
Researchers discovered a universal speed limit governing collective decay in many-body quantum systems. This fundamental constraint has implications for quantum technology scalability and applications relying on collective emission phenomena.
#QuantumScalability #ManyBodyPhysics #News
#QuantumScalability #ManyBodyPhysics #News
Developed a parameter-free diagrammatic framework enabling polynomial-time classical computation of thermal observables in single disorder realizations of the SYK model, with numerical validation against exact diagonalization up to N=24.
#QuantumAlgorithms #ManyBodyPhysics #QuantumSimulation
#QuantumAlgorithms #ManyBodyPhysics #QuantumSimulation
Diagrammatic Expansion for Fixed-Realization Observables in the Sachdev-Ye-Kitaev Model
arxiv.org
September 17, 2026 at 4:35 PM
Developed a parameter-free diagrammatic framework enabling polynomial-time classical computation of thermal observables in single disorder realizations of the SYK model, with numerical validation against exact diagonalization up to N=24.
#QuantumAlgorithms #ManyBodyPhysics #QuantumSimulation
#QuantumAlgorithms #ManyBodyPhysics #QuantumSimulation
NITheCS Webinar: 'Fluctuation Effects in Open Many Body Systems' - Dr Ameneh Sheikhan (University of Bonn, Germany) - Fri, 6 Feb @ 15h00-16h00 SAST. Attend online or in person.
mailchi.mp/nithecs/as
#TheoreticalPhysics #ManyBodyPhysics #QuantumSystems #ManyBodySystems
mailchi.mp/nithecs/as
#TheoreticalPhysics #ManyBodyPhysics #QuantumSystems #ManyBodySystems
February 5, 2026 at 7:11 AM
NITheCS Webinar: 'Fluctuation Effects in Open Many Body Systems' - Dr Ameneh Sheikhan (University of Bonn, Germany) - Fri, 6 Feb @ 15h00-16h00 SAST. Attend online or in person.
mailchi.mp/nithecs/as
#TheoreticalPhysics #ManyBodyPhysics #QuantumSystems #ManyBodySystems
mailchi.mp/nithecs/as
#TheoreticalPhysics #ManyBodyPhysics #QuantumSystems #ManyBodySystems
QuTech research demonstrates novel techniques for recovering quantum phases in many-body systems, advancing understanding of complex quantum phenomena and their potential applications.
#QuantumPhases #ManyBodyPhysics #News
#QuantumPhases #ManyBodyPhysics #News
Recovering Quantum Phases in Many-Body Systems
qutech.nl
August 15, 2026 at 3:17 PM
QuTech research demonstrates novel techniques for recovering quantum phases in many-body systems, advancing understanding of complex quantum phenomena and their potential applications.
#QuantumPhases #ManyBodyPhysics #News
#QuantumPhases #ManyBodyPhysics #News
From February 15 to 20, 2026, our YRC members Eugen Dizer and Karthik Chandrashekara took part in the Workshop on Long-Range Interactions 2026 in Les Houches, France.
#YRC #StructuresHeidelberg #QuantumPhysics #ManyBodyPhysics #LongRangeInteractions #LesHouches #Workshop #ScientificExchange
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#YRC #StructuresHeidelberg #QuantumPhysics #ManyBodyPhysics #LongRangeInteractions #LesHouches #Workshop #ScientificExchange
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April 10, 2026 at 9:30 AM
From February 15 to 20, 2026, our YRC members Eugen Dizer and Karthik Chandrashekara took part in the Workshop on Long-Range Interactions 2026 in Les Houches, France.
#YRC #StructuresHeidelberg #QuantumPhysics #ManyBodyPhysics #LongRangeInteractions #LesHouches #Workshop #ScientificExchange
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#YRC #StructuresHeidelberg #QuantumPhysics #ManyBodyPhysics #LongRangeInteractions #LesHouches #Workshop #ScientificExchange
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Here is the preprint:
arxiv.org/abs/2506.23928
#OpenQuantumSystems #ComputationalPhysics #ManyBodyPhysics #QuantumMonteCarlo #QuantumMetrology #Quantum 🧪
arxiv.org/abs/2506.23928
#OpenQuantumSystems #ComputationalPhysics #ManyBodyPhysics #QuantumMonteCarlo #QuantumMetrology #Quantum 🧪
Unraveling Open Quantum Dynamics with Time-Dependent Variational Monte Carlo
We introduce a method to simulate open quantum many-body dynamics by combining time-dependent variational Monte Carlo (tVMC) with quantum trajectory techniques. Our approach unravels the Lindblad mast...
arxiv.org
July 22, 2025 at 10:29 AM
Researchers discovered an exactly solvable quantum model hosting quantum many-body scars, magnon-pair condensation, and Hilbert space fragmentation simultaneously—providing insights into ergodicity breaking and non-thermal quantum dynamics.
#QuantumScars #ManyBodyPhysics #Research
#QuantumScars #ManyBodyPhysics #Research
Quantum Many-Body Scars, Magnon-Pair Condensation, and Hilbert Space Fragmentation in an Anisotropic Heisenberg Model
arxiv.org
August 18, 2026 at 3:13 PM
Researchers discovered an exactly solvable quantum model hosting quantum many-body scars, magnon-pair condensation, and Hilbert space fragmentation simultaneously—providing insights into ergodicity breaking and non-thermal quantum dynamics.
#QuantumScars #ManyBodyPhysics #Research
#QuantumScars #ManyBodyPhysics #Research
Researchers measure geometric response sensitivity across energy spectra to reveal how eigenbasis deformations accumulate during the integrability-to-chaos transition in many-body quantum systems.
#QuantumChaos #ManyBodyPhysics #Research
#QuantumChaos #ManyBodyPhysics #Research
Spectrally Local Geometric Response in Many-Body Quantum Chaos Onset
iq.fp2.dev
August 13, 2026 at 6:56 AM
Researchers measure geometric response sensitivity across energy spectra to reveal how eigenbasis deformations accumulate during the integrability-to-chaos transition in many-body quantum systems.
#QuantumChaos #ManyBodyPhysics #Research
#QuantumChaos #ManyBodyPhysics #Research
Novel graph-theoretic framework using quantum hitting times reveals universal spectral signatures of slow dynamics across disorder-driven, kinetically-constrained, and glassy quantum systems—providing new lens for understanding thermalization breakdown.
#QuantumDynamics #ManyBodyPhysics #Research
#QuantumDynamics #ManyBodyPhysics #Research
State-Graph Geometry as a Universal Probe for Slow Relaxation in Many-Body Quantum Systems
iq.fp2.dev
August 7, 2026 at 9:29 AM
Novel graph-theoretic framework using quantum hitting times reveals universal spectral signatures of slow dynamics across disorder-driven, kinetically-constrained, and glassy quantum systems—providing new lens for understanding thermalization breakdown.
#QuantumDynamics #ManyBodyPhysics #Research
#QuantumDynamics #ManyBodyPhysics #Research
Relative timing between entanglement entropy growth and anti-flatness peaks distinguishes whether quantum information is locally created or redistributed in many-body systems, with applications across thermal and many-body-localized regimes.
#QuantumEntanglement #QuantumMagic #ManyBodyPhysics
#QuantumEntanglement #QuantumMagic #ManyBodyPhysics
Entanglement-Growth Mechanisms Revealed Through Magic-Barrier Dynamics
iq.fp2.dev
July 14, 2026 at 5:26 AM
Relative timing between entanglement entropy growth and anti-flatness peaks distinguishes whether quantum information is locally created or redistributed in many-body systems, with applications across thermal and many-body-localized regimes.
#QuantumEntanglement #QuantumMagic #ManyBodyPhysics
#QuantumEntanglement #QuantumMagic #ManyBodyPhysics
Researchers demonstrated a cascaded network of 4 superconducting qubits with directional light-matter coupling, achieving multipartite entanglement and photon bound states—opening many-body quantum optics regimes previously inaccessible.
#QuantumOptics #SuperconductingQubits #ManyBodyPhysics
#QuantumOptics #SuperconductingQubits #ManyBodyPhysics
Cascaded Chiral Quantum Optics in Superconducting Qubit Networks
arxiv.org
July 8, 2026 at 4:51 AM
Researchers demonstrated a cascaded network of 4 superconducting qubits with directional light-matter coupling, achieving multipartite entanglement and photon bound states—opening many-body quantum optics regimes previously inaccessible.
#QuantumOptics #SuperconductingQubits #ManyBodyPhysics
#QuantumOptics #SuperconductingQubits #ManyBodyPhysics
Interacting SSH model exhibits anomalous suppression of quantum chaos deep in non-integrable regime via incomplete hybridization between many-body band states—revealing a novel chaos-suppression mechanism distinct from disorder or conventional localization.
#QuantumChaos #ManyBodyPhysics #Research
#QuantumChaos #ManyBodyPhysics #Research
Anomalous Suppression of Quantum Chaos in an Interacting SSH Model
arxiv.org
July 8, 2026 at 6:14 AM
Interacting SSH model exhibits anomalous suppression of quantum chaos deep in non-integrable regime via incomplete hybridization between many-body band states—revealing a novel chaos-suppression mechanism distinct from disorder or conventional localization.
#QuantumChaos #ManyBodyPhysics #Research
#QuantumChaos #ManyBodyPhysics #Research
New tangent-space method for studying excitation spectra in non-uniform quantum many-body systems. Rank tomography characterizes MPS expressivity; Bose-Hubbard benchmarks capture finite-size precursors of phase transitions.
#QuantumSimulation #ManyBodyPhysics #Research
#QuantumSimulation #ManyBodyPhysics #Research
Excitation Spectra and Rank Tomography of Matrix Product State Tangent Spaces
arxiv.org
July 7, 2026 at 1:08 PM
New tangent-space method for studying excitation spectra in non-uniform quantum many-body systems. Rank tomography characterizes MPS expressivity; Bose-Hubbard benchmarks capture finite-size precursors of phase transitions.
#QuantumSimulation #ManyBodyPhysics #Research
#QuantumSimulation #ManyBodyPhysics #Research
Researchers quantitatively explain quantum many-body chaos emergence through integrability-breaking gates, revealing microscopic mechanisms and characteristic timescales governing the transition from order to disorder in quantum systems.
#QuantumChaos #ManyBodyPhysics #News
#QuantumChaos #ManyBodyPhysics #News
Theory Reveals Microscopic Origins of Quantum Many-Body Chaos Through Integrability-Breaking Gates
quantumzeitgeist.com
July 3, 2026 at 3:23 PM
Researchers quantitatively explain quantum many-body chaos emergence through integrability-breaking gates, revealing microscopic mechanisms and characteristic timescales governing the transition from order to disorder in quantum systems.
#QuantumChaos #ManyBodyPhysics #News
#QuantumChaos #ManyBodyPhysics #News
NITheCS Mini-course: ‘Many-Body Physics & Second Quantisation (Schrödinger Field Theory)’ - Partha Nandi
📅 Wed: 29 April, 6 & 13 May
⏰ 15:00–16:00 SAST
📍 Attend in person or online
🔗 buff.ly/bLMKkTy
#ManyBodyPhysics #SecondQuantisation #QuantumFieldTheory #CondensedMatterPhysics #TheoreticalPhysics
📅 Wed: 29 April, 6 & 13 May
⏰ 15:00–16:00 SAST
📍 Attend in person or online
🔗 buff.ly/bLMKkTy
#ManyBodyPhysics #SecondQuantisation #QuantumFieldTheory #CondensedMatterPhysics #TheoreticalPhysics
April 29, 2026 at 12:22 PM
NITheCS Mini-course: ‘Many-Body Physics & Second Quantisation (Schrödinger Field Theory)’ - Partha Nandi
📅 Wed: 29 April, 6 & 13 May
⏰ 15:00–16:00 SAST
📍 Attend in person or online
🔗 buff.ly/bLMKkTy
#ManyBodyPhysics #SecondQuantisation #QuantumFieldTheory #CondensedMatterPhysics #TheoreticalPhysics
📅 Wed: 29 April, 6 & 13 May
⏰ 15:00–16:00 SAST
📍 Attend in person or online
🔗 buff.ly/bLMKkTy
#ManyBodyPhysics #SecondQuantisation #QuantumFieldTheory #CondensedMatterPhysics #TheoreticalPhysics
Controlled Hamiltonian switching in Ising spin chains can restore access to information that becomes hidden in many-body correlations. Numeric simulations show post-quench signals regain sensitivity to initial states without reversing prior dynamics.
#QuantumControl #ManyBodyPhysics #RydbergAtoms
#QuantumControl #ManyBodyPhysics #RydbergAtoms
Enhancing Initial-State Sensitivity via Time-Dependent Hamiltonian Readout in Ising Spin Chains
arxiv.org
June 30, 2026 at 5:43 PM
Controlled Hamiltonian switching in Ising spin chains can restore access to information that becomes hidden in many-body correlations. Numeric simulations show post-quench signals regain sensitivity to initial states without reversing prior dynamics.
#QuantumControl #ManyBodyPhysics #RydbergAtoms
#QuantumControl #ManyBodyPhysics #RydbergAtoms
Exact formulas reveal how stabilizer entropy transitions from critical to noncritical regimes, with universal crossover functions controlled by correlation length and boundary-sensitive finite constants in finite-size systems.
#QuantumInformation #ManyBodyPhysics #Research
#QuantumInformation #ManyBodyPhysics #Research
Exact Scaling of Stabilizer Entropy Beyond Quantum Critical Points
arxiv.org
June 15, 2026 at 5:28 AM
Exact formulas reveal how stabilizer entropy transitions from critical to noncritical regimes, with universal crossover functions controlled by correlation length and boundary-sensitive finite constants in finite-size systems.
#QuantumInformation #ManyBodyPhysics #Research
#QuantumInformation #ManyBodyPhysics #Research
Demonstrates efficient computation of many-body density of states with exponential cost reduction. Recovers Bose-Einstein distributions from first principles without assumptions on particle statistics.
#QuantumAlgorithms #ManyBodyPhysics #Research
#QuantumAlgorithms #ManyBodyPhysics #Research
Efficient Computation of Many-Body Density of States Using Universal Combinatorics
arxiv.org
May 5, 2026 at 3:40 AM
Demonstrates efficient computation of many-body density of states with exponential cost reduction. Recovers Bose-Einstein distributions from first principles without assumptions on particle statistics.
#QuantumAlgorithms #ManyBodyPhysics #Research
#QuantumAlgorithms #ManyBodyPhysics #Research
Quantum chaos in many-body systems emerges through a fractal cascade where local operators evolve toward increasingly complex non-local forms. We quantify this structure and connect it to relaxation dynamics—a quantum analog of classical turbulence.
#QuantumChaos #ManyBodyPhysics #Research
#QuantumChaos #ManyBodyPhysics #Research
Quantum Many-Body Operator Cascade as a Route to Chaos
iq.fp2.dev
April 21, 2026 at 3:59 AM
Quantum chaos in many-body systems emerges through a fractal cascade where local operators evolve toward increasingly complex non-local forms. We quantify this structure and connect it to relaxation dynamics—a quantum analog of classical turbulence.
#QuantumChaos #ManyBodyPhysics #Research
#QuantumChaos #ManyBodyPhysics #Research
New upper bound on bipartite entanglement entropy in many-body Hamiltonians using graph automorphism groups. For complete graph Kn, achieves exponential improvement: linear-to-logarithmic scaling in system size, consistent with exact entropy values.
#QuantumEntanglement #ManyBodyPhysics #Research
#QuantumEntanglement #ManyBodyPhysics #Research
Automorphism-Induced Entanglement Entropy Bounds in Many-Body Quantum Systems
iq.fp2.dev
April 14, 2026 at 4:18 AM
New upper bound on bipartite entanglement entropy in many-body Hamiltonians using graph automorphism groups. For complete graph Kn, achieves exponential improvement: linear-to-logarithmic scaling in system size, consistent with exact entropy values.
#QuantumEntanglement #ManyBodyPhysics #Research
#QuantumEntanglement #ManyBodyPhysics #Research
Researchers at Barcelona Institute of Science and Technology used symmetry-exploiting semidefinite programming to deliver verifiable ground-state energy bounds for Heisenberg spin models on lattices up to 16×16, surpassing prior 10×10 limits.
#QuantumSimulation #ManyBodyPhysics #News
#QuantumSimulation #ManyBodyPhysics #News
Semidefinite Programming Scales Quantum Spin Lattice Energy Bounds to 16×16
iq.fp2.dev
April 13, 2026 at 9:52 AM
Researchers at Barcelona Institute of Science and Technology used symmetry-exploiting semidefinite programming to deliver verifiable ground-state energy bounds for Heisenberg spin models on lattices up to 16×16, surpassing prior 10×10 limits.
#QuantumSimulation #ManyBodyPhysics #News
#QuantumSimulation #ManyBodyPhysics #News