Clay weekly context brief for the Condensed Matter category (ISO week 2026-W40).

Clay tracks publications from the Condensed Matter feed list. Below are recent items from this category, each with its source and a short description of what the publication covers when one is available in the source feed.

Recent publications:
1. Realization of Very High Mobility InAs Quantum Wells on InP Substrates Through Convex InAlAs Graded Buffer Optimization
   Source: cond-mat.mes-hall (Mesoscale and Nanoscale Physics)
   Link: https://arxiv.org/abs/2609.28795
   Due to strong spin-orbit coupling, large Land\'e $g$-factor, and a highly transparent interface, the two-dimensional electron gas (2DEG) in InAs quantum wells provides an ideal platform for the exploration of topological superconductivity in hybrid semiconductor-superconductor heterostructures.
2. Real-space determination of orbital states driving successive phase transitions in FeV2O4
   Source: cond-mat.str-el (Strongly Correlated Electrons)
   Link: https://arxiv.org/abs/2604.04398
   Direct experimental access to orbital states in strongly correlated materials remains a major challenge, despite their central role in driving coupled structural and magnetic phase transitions.
3. Foundations of Many-Body Theory of Quantum Unified Statistics: Green functions and Linear Response Theory
   Source: cond-mat.stat-mech (Statistical Mechanics)
   Link: https://arxiv.org/abs/2609.05878
   We develop a comprehensive many-body theory for systems of particles obeying quantum unified statistics, or quons.
4. How do incorrect ligands help detect a correct ligand?
   Source: cond-mat.soft (Soft Condensed Matter)
   Link: https://arxiv.org/abs/2609.25708
   Intrigued by the response of T cell receptors to the presence of a few agonist ligands, we propose a minimal model that can achieve similar performance.
5. Thermodynamic and statistical properties of a multifractional modified dispersion relation via the grand-canonical ensemble
   Source: cond-mat.quant-gas (Quantum Gases)
   Link: https://arxiv.org/abs/2605.16424
   We study the thermodynamic and statistical properties of a gas governed by a multifractional modified dispersion relation of the form $\omega^{2}=k^{2}+4E_{*}^{-1/2}k^{5/2}$, where $E_{*}$ sets the characteristic scale of the multifractional correction.
6. Lamb Shift of a Static Atom Facing a Rotating Surface
   Source: cond-mat.other (Other Condensed Matter)
   Link: https://arxiv.org/abs/2607.01495
   We study how the Lamb shift of a static atom is modified when a nearby planar body rotates rigidly about its normal while the atom is held at a fixed distance $a$.
7. Atom-Resolved Machine Learning of Dielectric and Piezoelectric Response
   Source: cond-mat.mtrl-sci (Materials Science)
   Link: https://arxiv.org/abs/2609.29978
   Predicting dielectric and piezoelectric responses in structurally complex materials requires large simulation cells, for which density-functional perturbation theory (DFPT) calculations scale as $\mathcal{O}(N^4)$ and become computationally prohibitive.
8. A fully parallel densely connected probabilistic Ising machine with inertia for real-time applications
   Source: cond-mat.dis-nn (Disordered Systems and Neural Networks)
   Link: https://arxiv.org/abs/2604.17109
   Ising machines---special-purpose hardware for heuristically solving Ising optimization problems---based on probabilistic bits (p-bits) have been established as a promising alternative to heuristic optimization algorithms run on conventional computers.
9. Oxide-Nitride Heteroepitaxy for Low-Loss Dielectrics in Superconducting Quantum Circuits
   Source: cond-mat.supr-con (Superconductivity)
   Link: https://arxiv.org/abs/2603.29065
   Superconducting qubits show great promise for the realization of fault-tolerant quantum computing, but lossy, amorphous dielectrics limit current technology.
10. Interaction induced flattening of optical transition quantum geometry
   Source: cond-mat.mes-hall (Mesoscale and Nanoscale Physics)
   Link: https://arxiv.org/abs/2609.28642
   The Riemannian geometry of optical transition dipoles has become a useful picture for understanding linear and nonlinear optical response.
11. Disorder-induced quantum Fisher information in topological quantum systems
   Source: cond-mat.str-el (Strongly Correlated Electrons)
   Link: https://arxiv.org/abs/2609.30142
   The topological order of the Kitaev toric code is insensitive to disorder in its couplings since all star and plaquette operators commute; consequently, the stabilizer ground-state manifold is independent of the individual coupling strengths, and the phase remains stable against weak local perturbations.
12. A Human-AI Theorem Connecting Spontaneous and Field-Induced Mechanisms of Collective Behavior in One Dimension
   Source: cond-mat.stat-mech (Statistical Mechanics)
   Link: https://arxiv.org/abs/2609.00322
   Can an artificial intelligence (AI) generate a scientific hypothesis outside a human collaborator's active hypothesis space (AHS), and can human-AI research be organized to make such breakthroughs more likely?
13. Direct Experimental Test of Conformal Invariance via Grazing Scattering: A Proposal for X-ray and Neutron Experiments
   Source: cond-mat.soft (Soft Condensed Matter)
   Link: https://arxiv.org/abs/2605.06773
   We propose a test of conformal invariance in critical phenomena based on the study of a two-point correlation function in the presence of a boundary.
14. Quantum information scrambling in strongly disordered Rydberg spin systems
   Source: cond-mat.quant-gas (Quantum Gases)
   Link: https://arxiv.org/abs/2512.19856
   Despite the fact that power-law interactions occur in a plethora of physical systems, their many-body dynamics is far less understood than that of nearest-neighbor interacting systems.
15. Larger physical volume and bounds on the number of matter fields in noncompact gauge theories on a lattice
   Source: cond-mat.other (Other Condensed Matter)
   Link: https://arxiv.org/abs/2609.28168
   The work was motivated by the numerical result that in a pure SU(2) gauge theory the ratio R of the effective non-compact and compact lattice spacing is larger than 1 and increasing with decreasing gauge coupling, as well as the expectation that it should further increase extending the parameter space.
16. Subnanometer thermodynamic overlayers on bimetallic nanoparticles
   Source: cond-mat.mtrl-sci (Materials Science)
   Link: https://arxiv.org/abs/2609.29971
   Nanoparticle properties are governed by their surfaces, yet their atomic-scale surface structures remain challenging to predict.
17. Detecting local topology with the spectral localizer
   Source: cond-mat.dis-nn (Disordered Systems and Neural Networks)
   Link: https://arxiv.org/abs/2506.14174
   The spectral localizer is a predictive framework for the computation of topological invariants of natural and artificial materials.
18. Power-law growth of shift current with superlattice period in flat Chern bands
   Source: cond-mat.mes-hall (Mesoscale and Nanoscale Physics)
   Link: https://arxiv.org/abs/2609.28687
   Quantum geometry governs a wide array of physical observables in topological quantum materials.
19. Leg-Tied Tensor Network States: Entanglement Beyond Virtual Bonds
   Source: cond-mat.str-el (Strongly Correlated Electrons)
   Link: https://arxiv.org/abs/2609.30101
   We introduce a class of tensor-network states in which physical legs are shared among local tensors, termed leg-tied tensor ans\"atze (LETTA).
20. A variational formulation of stochastic thermodynamics: Spatially extended systems
   Source: cond-mat.stat-mech (Statistical Mechanics)
   Link: https://arxiv.org/abs/2604.22298
   Stochastic field theories are often constructed phenomenologically, without a systematic assessment of thermodynamic consistency or local detailed balance.
21. Control of filament network rigidity by the condensation of crowding molecules
   Source: cond-mat.soft (Soft Condensed Matter)
   Link: https://arxiv.org/abs/2609.26983
   Understanding how liquid-liquid phase separation impacts the mechanics of filament networks is a fundamental physical problem at the heart of biological cellular processes and soft material design.
22. Discrete normalized gradient flow for two-component Bose-Einstein condensates: Energy dissipation, global convergence and sharp local convergence behavior
   Source: cond-mat.quant-gas (Quantum Gases)
   Link: https://arxiv.org/abs/2510.19392
   The gradient flow with semi-implicit discretization (GFSI) is the most widely used algorithm for computing the ground state of Gross-Pitaevskii energy functional.
23. Resonantly Enhanced Multiphonon Scattering and Local Orbital-Phonon Coupling in Bulk and Thin Flakes of 2D Single Crystals of Antiferromagnetic (NixFe1-x)2P2S6
   Source: cond-mat.other (Other Condensed Matter)
   Link: https://arxiv.org/abs/2609.27721
   Orbital degrees of freedom play a pivotal role in shaping the physical properties of two-dimensional (2D) van der Waals magnetic systems, strongly influencing electron-phonon coupling and intermediate-state dynamics.
24. Local order in natural sanidine disentangled via single crystal diffuse scattering
   Source: cond-mat.mtrl-sci (Materials Science)
   Link: https://arxiv.org/abs/2609.29899
   Natural sanidine commonly preserves metastable chemical disorder at ambient conditions, but the local structural correlations associated with this disorder remain poorly understood due to a reliance on average-structure analysis alone.
25. Estimates of ground state energies for the quantum SK and 2D-EA models, using deGennes-Suzuki-Kubo mean-field annealing dynamics
   Source: cond-mat.dis-nn (Disordered Systems and Neural Networks)
   Link: https://arxiv.org/abs/2605.29875
   We perform large scale quantum annealing of the Sherrington-Kirkpatrick (SK) spin glass up to a system size $N=40000$ to estimate its ground state energy using the deGennes-Suzuki-Kubo mean-field quantum Ising dynamics, extending the earlier results (reported in Eur.
26. Intriguing topological superconductor phases in long-range extended Kitaev models: an interplay between sub-lattices and power-law interaction
   Source: cond-mat.mes-hall (Mesoscale and Nanoscale Physics)
   Link: https://arxiv.org/abs/2609.28735
   The power-law profile of hopping and superconductivity introduces rich critical phenomena that are not possible to explore in the nearest-neighbor models.
27. Beyond Bond Gauge: Exact Tensor-Network Tangent Spaces at Weighted Graph States
   Source: cond-mat.str-el (Strongly Correlated Electrons)
   Link: https://arxiv.org/abs/2609.30066
   For normal PEPS, the fundamental theorem settles at the finite level whether virtual-bond gauge exhausts a tensor network's representation freedom.
28. Upper critical dimension for dirty Weyl semimetal-to-metal quantum phase transitions
   Source: cond-mat.stat-mech (Statistical Mechanics)
   Link: https://arxiv.org/abs/2609.30265
   Weyl or Dirac fermions with the iconic linear energy-momentum relation and average density of states (ADOS) $\rho(E) \sim |E|^{d-1}$ at energy $E$ in $d$ spatial dimensions, constitute a unique setup to study the disorder-driven semimetal-to-metal quantum phase transition (QPT) between ballistic (realized for weak disorder) and diffusive (stabilized at stronger disorder) quasiparticles.
29. Large integration time-step in molecular dynamics simulation artificially enhances the strength of hydrophobic interaction
   Source: cond-mat.soft (Soft Condensed Matter)
   Link: https://arxiv.org/abs/2609.30109
   Molecular dynamics simulations are used to compute the potential of mean force (PMF) between two united-atom methane molecules at several temperatures and integration time-steps.
30. Entanglement area law in interacting bosons from the Bose-Hubbard model to $\phi$4 theory and beyond
   Source: cond-mat.quant-gas (Quantum Gases)
   Link: https://arxiv.org/abs/2411.02157
   The entanglement area law is a universal principle that characterizes quantum many-body phases and underpins tensor network algorithms.
31. Spin-Boson Mappings in the Formalism of $f$-Deformations
   Source: cond-mat.other (Other Condensed Matter)
   Link: https://arxiv.org/abs/2609.22502
   We develop a unified algebraic approach to spin-boson transformations based on the formalism of $f$-deformed oscillators.

Sources in this brief: cond-mat.dis-nn (Disordered Systems and Neural Networks); cond-mat.mes-hall (Mesoscale and Nanoscale Physics); cond-mat.mtrl-sci (Materials Science); cond-mat.other (Other Condensed Matter); cond-mat.quant-gas (Quantum Gases); cond-mat.soft (Soft Condensed Matter); cond-mat.stat-mech (Statistical Mechanics); cond-mat.str-el (Strongly Correlated Electrons); cond-mat.supr-con (Superconductivity).
Selected 31 of 367 available items for this weekly brief.