Results 41 to 50 of about 409 (155)

The Global Dynamics of the Painlevé–Gambier Equations XVIII, XXI, and XXII

Mathematics
In this paper, we describe the global dynamics of the Painlevé–Gambier equations numbered XVIII: x″−(x′)2/(2x)−4x2=0, XXI: x″−3(x′)2/(4x)−3x2, and XXII: x″−3(x′)2/(4x)+1=0.
Jie Li, Jaume Llibre
doaj   +1 more source

Planar Chiral Nanoantenna for Excitation‐Chirality‐Controlled Hot Spot Modulation and Emitter‐Coupled Circularly Polarized Emission

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
A planar chiral plasmonic nanoantenna is shown to translate the changing handedness of circularly polarized excitation into deterministic switching of a nanoscale hot spot with maximal dissymmetry and complete modulation depth. Coupling an achiral quantum emitter to the nanogap simultaneously enables circularly polarized emission of near‐maximal purity,
Abhik Chakraborty, Xiaofei Wu, Ankit Kumar Singh, Fabian Scheidler, Min Jiang, Jürgen Popp, Bert Hecht, Jer‐Shing Huang   +7 more
wiley   +1 more source

Phase transitions from heating to non-heating in $SU(1,1)$ quantum dynamics: Applications to Bose-Einstein condensates and periodically driven coupled oscillators

SciPost Physics Core
We study the entanglement properties in non-equilibrium quantum systems with the $SU(1,1)$ structure. Through Möbius transformation, we map the dynamics of these systems following a sudden quench or a periodic drive onto three distinct trajectories on ...
Heng-Hsi Li, Po-Yao Chang
doaj   +1 more source

The Isoperimetric Problem in Randers Poincaré Disc [PDF]

, 2023
Arti Sahu Gangopadhyay, Ranadip Gangopadhyay, Hemangi Madhusudan Shah, Bankteshwar Tiwari   +3 more
openalex   +1 more source

Full Vectorial Field Sensing Using Liquid Crystal Droplet Arrays

Advanced Materials, Volume 38, Issue 39, 13 July 2026.
An inkjet‐printed liquid crystal droplet array enables compact, low‐cost, single‐shot sensing of the full vectorial light field. Within a single platform, it simultaneously retrieves intensity, polarization, and phase, while dual‐wavelength operation highlights its capability for multi‐wavelength optical field characterization. ABSTRACT Determining the
Xuke Qiu, Jinge Guo, Jiahe Cui, Runchen Zhang, Zimo Zhao, Yifei Ma, Waqas Kamal, Steve J. Elston, Alfonso A. Castrejón‐pita, Stephen M. Morris, Chao He   +10 more
wiley   +1 more source

Dynamics of the Isotropic Star Differential System from the Mathematical and Physical Point of Views

AppliedMath
The following differential quadratic polynomial differential system  dxdt=y−x, dydt=2y−yγ−12−γy−5γ−4γ−1x, when the parameter γ∈(1,2] models the structure equations of an isotropic star having a linear barotropic equation of state, being x=m(r)/r where m ...
Joan-Carles Artés, Jaume Llibre, Nicolae Vulpe   +2 more
doaj   +1 more source

Guiding and Manipulating Light Fields in Microstructured Liquid Crystals

Advanced Physics Research, Volume 5, Issue 7, July 2026.
This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang, Yong‐shuai Li, Jin‐hui Chen   +2 more
wiley   +1 more source

Multimode Phonon Lasing via Self‐Induced Optical Coherent Pumping

Laser &Photonics Reviews, Volume 20, Issue 13, 8 July 2026.
A silicon optomechanical nanobeam generates self‐sustained phonon lasing in multiple competing mechanical modes via self‐pulsing, an intrinsic optical modulation arising from cavity nonlinearity. This self‐organized mechanism enables robust multi‐frequency operation spanning periodic, quasi‐periodic, and chaotic regimes without external modulation. The
David Alonso Tomás, Carlos Mas Arabí, Carles Milián, Néstor E. Capuj, Alejandro Martínez, Daniel Navarro Urrios   +5 more
wiley   +1 more source

A Dialogue on Revolutions and Revolutionaries in Science: A Perspective From Quantum Mechanics

Natural Sciences, Volume 6, Issue 3, July 2026.
ABSTRACT We discuss the notions of scientific revolutions and revolutionaries in the context of the Relativity Revolution and of the First, Second, and Third Quantum Revolutions. We conclude that at the core of the question of what qualifies as a revolution and revolutionary is an assessment of the gradients of knowledge accumulation over time, both at
Ron Folman, Bretislav Friedrich
wiley   +1 more source

On the Geometric Aspects of Architectural Compositions

Journal of Architectural and Engineering Research
We consider different aspects of the application of non-Euclidean geometries in architectural compositions. The main attention is put on Lobachevski's and Mandelbrot's fractal geometry.
Aren Nahapetyan, Linda Khachatryan
doaj   +1 more source