A few of the ideas, topics, and commonplaces that have been gaining steam on arXiv during the last few months (yes, I do a lot of filtering to keep away most of the genAI stuff; explainer).
Some recent articles:
- Directed searches for gravitational waves from ultralight vector boson clouds around merger remnant and galactic black holes during the first part of the fourth LIGO-Virgo-KAGRA observing run
- Assembling GW231123 in star clusters through the combination of stellar binary evolution and hierarchical mergers
- Machine Learning Confirms GW231123 is a "Lite" Intermediate Mass Black Hole Merger
- The Hierarchical Merger Scenario for GW231123
- Beyond Hierarchical Mergers: Accretion-Driven Origins of Massive, Highly Spinning Black Holes in Dense Star Clusters
2. Optical anisotropy: — having optical properties (e.g. the speed of light thru the medium) that depend on the angle and polarization of the light.
Some recent articles:
- Reconfigurable, non-volatile control of optical anisotropy in ReS2 via ferroelectric gating
- Strong and Engineerable Optical Anisotropy in Easily Integrable Epitaxial SrO(SrTiO 3 ) N Ruddlesden--Popper Thin Layers
- Highly anisotropic 1D materials supported in exfoliable 2D coordination polymers with optical anisotropy switching via twist-engineering
- Skyrmions based on optical anisotropy for topological encoding
- Effect of polarisation on two-photon resonance in a large Zeeman manifold
3. Quantum-enhanced sensing: Most everybody talks about quantum computing, but sensors are much closer — in many ways already here ("quantum" is almost as much a cultural category as "AI") — and I would argue even more important.
Some recent articles:
- Wafer-Scale Squeezed-Light Chips
- Unifying Anderson transitions and topological amplification in non-Hermitian chains
- Can We Conjugate the Orbital Angular Momentum of a Single Photon with Nonlinear Optics? A Theoretical Analysis
- Deterministic Control of Photon-Number Probabilities via Phase-Controlled Quantum Interference
- Single-gate, multipartite entanglement on a room-temperature quantum register