Results 51 to 60 of about 170,403 (264)

Lipschitz normal embedding among superisolated singularities

, 2018
Any germ of a complex analytic space is equipped with two natural metrics: the outer metric induced by the hermitian metric of the ambient space and the inner metric, which is the associated riemannian metric on the germ.
Misev, Filip, Pichon, Anne
core   +3 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Instantaneous field singularities in electromagnetic waves

New Journal of Physics, 2018
Singularities, i.e. places of discontinuity of physical parameters are extremely general objects appearing in both stationary and wave processes. They commonly occur in purely coherent, highly directional electromagnetic waves, such as laser beams ...
Vladlen Shvedov, Wieslaw Krolikowski
doaj   +1 more source

Caustic free completion of pressureless perfect fluid and k-essence

Journal of High Energy Physics, 2017
Both k-essence and the pressureless perfect fluid develop caustic singularities at finite time. We further explore the connection between the two and show that they belong to the same class of models, which admits the caustic free completion by means of ...
Eugeny Babichev, Sabir Ramazanov
doaj   +1 more source

Thermalization from gauge/gravity duality: Evolution of singularities in unequal time correlators

, 2012
We consider a gauge/gravity dual model of thermalization which consists of a collapsing thin matter shell in asymptotically Anti-de Sitter space. A central aspect of our model is to consider a shell moving at finite velocity as determined by its equation
D Galante, D Garfinkle, D Garfinkle, E Berti, G Festuccia, H Bantilan, HR Grigoryan, I Amado, J Abajo-Arrastia, J Aparicio, J Erdmenger, J Erdmenger, J Natario, Johanna Erdmenger, K Skenderis, L Fidkowski, MP Heller, MP Heller, OJ Dias, P Bizon, PK Kovtun, PM Chesler, PM Chesler, PM Chesler, R Baier, S Bhattacharyya, S Caron-Huot, S Lin, SB Giddings, Shu Lin, T Albash, T Takayanagi, UH Danielsson, UH Danielsson, V Balasubramanian, V Balasubramanian, VE Hubeny, W Unruh, X Arsiwalla   +38 more
core   +1 more source

CONFINEMENT AND COMPLEX SINGULARITIES IN QED3 [PDF]

Color Confinement and Hadrons, 1996
The standard approximations of the Dyson--Schwinger equation lead to complex singularities of the fermion propagator. In three-dimensional QED one can show that this phenomenon might be related to confinement: a confining potential leads to mass-like singularities at complex momenta, and thus to the absence of a mass singularity on the real timelike ...
openaire   +2 more sources

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

Spectral properties of the Klein-Gordon s-wave equation with spectral parameter-dependent boundary condition

International Journal of Mathematics and Mathematical Sciences, 2004
We investigate the spectrum of the differential operator Lλ defined by the Klein-Gordon s-wave equation y″+(λ−q(x))2y=0, x∈ℝ+=[0,∞), subject to the spectral parameter-dependent boundary condition y′(0)−(aλ+b)y(0)=0 in the space L2(ℝ+), where a≠±i, b are ...
Gülen Başcanbaz-Tunca
doaj   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Complex-space singularities of 2D Euler flow in Lagrangian coordinates

, 2007
We show that, for two-dimensional space-periodic incompressible flow, the solution can be evaluated numerically in Lagrangian coordinates with the same accuracy achieved in standard Eulerian spectral methods.
Bec, J., Frisch, U., Matsumoto, T.
core   +3 more sources