Results 71 to 80 of about 178,783 (273)

Evolution of the Phase Singularity of an Orbital Angular Momentum Beam with an Astigmatism Phase

Photonics
In this study, we explore the impact of the astigmatism phase on the evolution of the phase singularity of an orbital angular momentum (OAM) beam propagating through free space. The results demonstrate that the high-order phase singularity dispersed into
Chunhao Liang, Cuiling Zheng, Xinru Lian, Qian Chen, Yaru Gao, Jinsong Liu, Yangjian Cai, Jun Zeng   +7 more
doaj   +1 more source

Collision dynamics in Hénon-Heiles’ two-body problem [PDF]

Serbian Astronomical Journal, 2003
We tackle the two-body problem associated to Hénon-Heiles’ potential in the special case of the collision singularity. Using McGehee-type transformations of the second kind, we blow up the singularity and replace it by the collision manifold Mc pasted on
Mioc V., Barbosu M.
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Signature of quantum Griffiths singularity state in a layered quasi-one-dimensional superconductor

Nature Communications, 2018
Whether the quantum Griffiths singularity state exists in one-dimensional (1D) systems remains elusive. Here, Zhang et al. report violation of the Pauli limit in the superconducting critical field and multiple phase transitions in the current-voltage ...
Enze Zhang, Jinhua Zhi, Yi-Chao Zou, Zefang Ye, Linfeng Ai, Jiacheng Shi, Ce Huang, Shanshan Liu, Zehao Lin, Xinyuan Zheng, Ning Kang, Hongqi Xu, Wei Wang, Liang He, Jin Zou, Jinyu Liu, Zhiqiang Mao, Faxian Xiu   +17 more
doaj   +1 more source

Interior structure and complexity growth rate of holographic superconductor from M-theory

Journal of High Energy Physics, 2022
We study the interior dynamics of a top-down holographic superconductor from M-theory. The condense of the charged scalar hair necessarily removes the inner Cauchy horizon and the spacetime ends at a spacelike singularity.
Yu-Sen An, Li Li, Fu-Guo Yang, Run-Qiu Yang   +3 more
doaj   +1 more source

Tunneling Anomaly in Superconductor above Paramagnetic Limit

, 1997
We study the tunneling density of states (DoS) in the superconducting systems driven by Zeeman splitting E_Z into the paramagnetic phase. We show that, even though the BCS gap disappears, superconducting fluctuations cause a strong DoS singularity in the
A. A. Abrikosov, A. I. Larkin, B. L. Altshuler, B. L. Altshuler, B. L. Altshuler, C. T. Black, I. Giaver, I. L. Aleiner, J. von Delft, L. N. Cooper, M. Tinkham, P. Fulde, W. Wu   +12 more
core   +1 more source

Susceptibility singularities at first-order phase transitions

Physical Review Letters, 1992
Problems associated with analyticity of thermodynamic functions close to first-order phase transitions are briefly reviewed. The bubble model for correlation functions is then applied to planar Ising-like models at subcritical temperatures (T<Tc) with a bulk magnetic field h. The fluctuation sum is used to calculate the susceptibility χ(h) from the
Abraham, D, Upton, P
openaire   +3 more sources

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Phase singularity annihilation in plasmonic nano-apertures via epsilon-near-zero metamaterials

APL Photonics, 2021
In this work, we performed an extensive theoretical and experimental study to unveil the underlying mechanisms related to the intensified transmittance in epsilon-near-zero (ENZ)-integrated plasmonic nano-apertures.
F. Ghasemzadeh, A. R. Rashed, H. Caglayan   +2 more
doaj   +1 more source

Continuations of the nonlinear Schr\"odinger equation beyond the singularity

, 2011
We present four continuations of the critical nonlinear \schro equation (NLS) beyond the singularity: 1) a sub-threshold power continuation, 2) a shrinking-hole continuation for ring-type solutions, 3) a vanishing nonlinear-damping continuation, and 4) a
Albright J R, Bao W, Bourgain J, Fraiman G, G Fibich, M Klein, Merle F, Merle F Raphael P Szeftel J, Stinis P, Strauss W, Sulem C   +10 more
core   +1 more source