This work presents the first magnetic phase diagram of GdBO3, revealing three successive zero-field transitions and four field-induced magnetic ground states.
doi.org/10.1016/j.xi...
#geometricalfrustration #quantumcriticality #triangularlattice #magnetocaloriceffect

Exact analytical solutions reveal how Markovian Pauli noise induces an emergent effective temperature in quantum critical states despite infinite-temperature dissipation, with experimentally accessible signatures via probe qubit spectroscopy.

#QuantumCriticality #QuantumNoise #Research

Analytical theory for measurement-induced entanglement in infinite-randomness critical states. MIE decays with universal exponent (3-√5)/2; critical properties remarkably robust—contrasting sharply with clean systems.

#QuantumEntanglement #QuantumCriticality #Research

Topology fundamentally reshapes quantum dynamics: bulk systems follow established scaling laws, but topological edge modes exhibit anomalous behavior, challenging longstanding theories of quantum phase transitions and their universality.

#QuantumPhysics #TopologicalQuantum #QuantumCriticality

Projected ensembles from quantum measurements reveal universal scaling hierarchy independent of interaction strength—geometric mechanism via replica boundary conformal field theory unveils hidden structure in measured critical states.

#QuantumCriticality #MeasurementTheory #Research

Novel dynamical topological index maps spectral geometry to quantum criticality in non-Hermitian systems. Discovery reveals how gain-and-loss dynamics create imaginary Fermi surfaces with intriguing scale-invariant quantum properties.

#NonHermitianSystems #QuantumTopology #QuantumCriticality

NITheCS & UKZN Seminar: 'Universality & Scaling in Open Quantum Systems under Cooling Dynamics'
👤 Join Prof Michael Kastner (SU)
📅 Tues, 21 April
⏰ 14:10–15:10 SAST
Attend online or in person
buff.ly/DOR4VXi
#QuantumPhysics #OpenQuantumSystems #QuantumCriticality #NonequilibriumPhysics #KibbleZurek

Controlled perturbative RG framework for long-range quantum O(n) models reveals LR-SR boundary at σ*=2. Two-loop calculations provide explicit critical exponents, establishing universality diagram for quantum systems with long-range interactions.

#QuantumCriticality #RenormalizationGroup #Research

Non-Hermitian systems generically enable one-dimensional delocalization with critical properties of random Dirac fermions—without fine-tuning. Discovery reveals universal mechanism linking spectral topology to quantum criticality.

#NonHermitian #QuantumCriticality #Research