Clay weekly context brief for the Condensed Matter category (ISO week 2026-W30).

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. Microscopic mechanism for resonant light-enhanced pair correlations in K$_3$C$_{60}$
   Source: cond-mat.supr-con (Superconductivity)
   Link: https://arxiv.org/abs/2604.10987
   Recent experiments on K3C60 revealed a giant enhancement of the light-induced superconducting-like optical response for pump frequencies near 10 THz, with an efficiency roughly two orders of magnitude larger than for off resonant excitation.
2. Dynamic properties in a collisional model of a confined quasi-two-dimensional granular fluid driven by a stochastic bath with friction
   Source: cond-mat.stat-mech (Statistical Mechanics)
   Link: https://arxiv.org/abs/2605.03455
   This paper investigates the dynamic properties of a confined quasi-two-dimensional granular fluid at moderate densities, modeled within the framework of the Enskog kinetic equation.
3. Topology meets superconductivity in a one-dimensional $t-J$ model of magnetic atoms
   Source: cond-mat.quant-gas (Quantum Gases)
   Link: https://arxiv.org/abs/2509.03387
   Strongly interacting fermions represent the key constituent of several intriguing phases of matter.
4. Inelastic Constitutive Kolmogorov-Arnold Networks: A generalized framework for automated discovery of interpretable inelastic material models
   Source: cond-mat.mtrl-sci (Materials Science)
   Link: https://arxiv.org/abs/2602.17750
   A key problem of solid mechanics is the identification of the constitutive law of a material, that is, the relation between strain history and stress.
5. Reconstruction of the noise correlation spectral density from the cavity emission in a two-qubit system
   Source: cond-mat.mes-hall (Mesoscale and Nanoscale Physics)
   Link: https://arxiv.org/abs/2607.15909
   A significant challenge in the field of large-scale fault-tolerant quantum computation is the influence of noise.
6. Thermodynamic Constraints on Perfect Equilibrium Superconducting Diodes
   Source: cond-mat.supr-con (Superconductivity)
   Link: https://arxiv.org/abs/2512.21384
   Superconducting diodes promise dissipationless rectification, yet equilibrium platforms without engineered junctions typically exhibit modest efficiencies.
7. Entropy Geometry and Condensation in Wealth Allocation
   Source: cond-mat.stat-mech (Statistical Mechanics)
   Link: https://arxiv.org/abs/2602.03676
   We develop a statistical framework for wealth allocation in which equilibrium-like statistics follow from unbiased counting of admissible configurations rather than postulated exchange rules.
8. Apparatus for quantum-mixture research in microgravity
   Source: cond-mat.quant-gas (Quantum Gases)
   Link: https://arxiv.org/abs/2508.20820
   Experiments with ultracold quantum gases are a rapidly advancing research field with many applications in fundamental physics and quantum technology.
9. Property-dependent material times
   Source: cond-mat.mtrl-sci (Materials Science)
   Link: https://arxiv.org/abs/2607.15920
   We analyze simulations of physical aging following large temperature up-jumps from equilibrated, slowly relaxing states.
10. A Flickering Resonance Degeneracy on Entropy-Ruled Charge Transport in the Extended Hopping Sites for Biological Systems: Role of Static-to-Dynamic Disorder
   Source: cond-mat.mes-hall (Mesoscale and Nanoscale Physics)
   Link: https://arxiv.org/abs/2607.15785
   Charge transport (CT) in biological systems is of great interest due to its role in various functional activities like photobiology, bioenergetics, redox catalytic and other metabolic activities, etc.
11. Many-body wave function and edge magnetization of an open $p+is$ superconducting chain
   Source: cond-mat.supr-con (Superconductivity)
   Link: https://arxiv.org/abs/2511.05002
   Although BCS wave functions for superconductors under periodic boundary conditions are well established, obtaining an explicit form of the many-body BCS wave function under open boundary condition is usually a nontrivial problem.
12. Entanglement dynamics in minimal Kitaev chains
   Source: cond-mat.stat-mech (Statistical Mechanics)
   Link: https://arxiv.org/abs/2507.17586
   Minimal Kitaev chains host Majorana quasiparticles, which, although not topologically protected, exhibit spatial nonlocality and hence expected to be useful for quantum information tasks.
13. Interactions and Reconnections of Four-Dimensional Quantum Vortices
   Source: cond-mat.quant-gas (Quantum Gases)
   Link: https://arxiv.org/abs/2411.07943
   Interactions and reconnections of vortices are fundamental in many areas of physics, including classical and quantum fluids where they are central to understanding phenomena such as turbulence.
14. Einstein crystals in Snyder and Snyder-de Sitter noncommutative backgrounds
   Source: cond-mat.mtrl-sci (Materials Science)
   Link: https://arxiv.org/abs/2607.15760
   We investigate the behavior of Einstein crystals in noncommutative backgrounds described by the Snyder and Snyder-de Sitter models.
15. Near-field Dressing of Thermal Emission
   Source: cond-mat.mes-hall (Mesoscale and Nanoscale Physics)
   Link: https://arxiv.org/abs/2607.15622
   Radiative heat transfer at subwavelength distances is generally understood as enhanced energy exchange mediated by photon tunnelling between neighboring bodies.
16. Coherent driving of displacive Higgs fluctuations in superconductors
   Source: cond-mat.supr-con (Superconductivity)
   Link: https://arxiv.org/abs/2607.16055
   Intense phase-stable terahertz (THz) laser pulses can drive collective modes coherently via multi-photon excitation pathways in a manner different than the standard resonant mechanism operative in linear response.
17. Imaginary Time Formalism for Causal Nonlinear Response Functions
   Source: cond-mat.stat-mech (Statistical Mechanics)
   Link: https://arxiv.org/abs/2506.21428
   It is well established that causal linear response functions can be found by computing the much simpler imaginary time-ordered Matsubara functions and performing an analytic continuation.
18. Growth of quartet correlations in neutron-rich Tellurium isotopes within quartet Bardeen-Cooper-Schrieffer theory
   Source: cond-mat.quant-gas (Quantum Gases)
   Link: https://arxiv.org/abs/2607.15700
   Quartet correlations in neutron-rich Te isotopes are investigated within the quartet Bardeen-Cooper-Schrieffer (BCS) framework.
19. Field-induced first order transitions and phase coexistence in the Kitaev quantum spin liquid candidate BaCo2(AsO4)2
   Source: cond-mat.mtrl-sci (Materials Science)
   Link: https://arxiv.org/abs/2607.15346
   BaCo2(AsO4)2 (BCAO) is an insulating Kitaev quantum spin liquid candidate with a rich low-temperature phase diagram.
20. Enhanced Third-Harmonic Generation in Diamond Photonic Crystal Slabs via Doubly Resonant Quasi-Bound States in the Continuum
   Source: cond-mat.mes-hall (Mesoscale and Nanoscale Physics)
   Link: https://arxiv.org/abs/2607.15526
   We propose and numerically demonstrate doubly resonant third-harmonic generation (THG) in a diamond photonic crystal (PhC) slab, in which the fundamental harmonic (FH) and the third harmonic (TH) modes are simultaneously resonant within the same membrane.

Sources in this brief: cond-mat.mes-hall (Mesoscale and Nanoscale Physics); cond-mat.mtrl-sci (Materials Science); cond-mat.quant-gas (Quantum Gases); cond-mat.stat-mech (Statistical Mechanics); cond-mat.supr-con (Superconductivity).
Selected 20 of 70 available items for this weekly brief.