Results 51 to 60 of about 3,852 (253)

Dynamical phase transitions, caustics, and quantum dark bands

New Journal of Physics
We provide a new perspective on quantum dynamical phase transitions (DPTs) by explaining their origin in terms of caustics that form in the Fock space representation of the many-body state over time, using the fully connected transverse field Ising model
Valentin Link, Walter T Strunz, D H J O’Dell   +2 more
doaj   +1 more source

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

THE NONLINEAR CAUSTIC

Tamkang Journal of Mathematics, 1991
In this paper the boundary layer at the nonlinear caustic is discussed and a nonlinear Airy equation is,obtained by adapting techniques from linear theory. It is shown that the incident beam undergoes a phase shift by an amount of $\pi/2$ as it passes through the caustic and becomes the outgoing beam.
openaire   +3 more sources

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Bubbling up consequences: severe gastric injury in a child after hydrogen peroxide ingestion: a case report [PDF]

Pediatric Emergency Medicine Journal
We report a case of a previously healthy 9-year-old boy who presented to the emergency department following accidental ingestion of 35% hydrogen peroxide.
Ali Yazback, Cory Howard, Paolina Pantcheva, Natalie M. Reyes, Robert K. Wiser   +4 more
doaj   +1 more source

Point diffraction interferometry to measure local curvatures and caustics of noisy wave fronts: Application for determining optical properties of fish lenses [PDF]

Journal of the European Optical Society-Rapid Publications, 2015
The study of caustics is important because they contain information about the image formation properties of optical systems. In this work we use the concept of caustic as a set of focal points, and we have developed a second order approach theory to ...
Vallmitjana S., Ricart I., Bosch S., Gargallo A., Acosta E.   +4 more
doaj   +1 more source

Caustics of Non-Paraxial Perfect Optical Vortices Generated by Toroidal Vortex Lenses

Photonics, 2021
In this paper, we consider the comparative formation of perfect optical vortices in the non-paraxial mode using various optical elements: non-paraxial and parabolic toroidal vortex lenses, as well as a vortex axicon in combination with a parabolic lens ...
Svetlana N. Khonina, Sergey I. Kharitonov, Sergey G. Volotovskiy, Viktor A. Soifer   +3 more
doaj   +1 more source

Active caustics

Physical Review Fluids
Inertial particles (IPs) in vortical fluid flow cluster strongly, forming singular structures termed caustics for their resemblance to focal surfaces in optics. Here we show that such extreme aggregation onto low-dimensional submanifolds can arise without mechanical inertia for self-propelled particles (SPPs), through a formal correspondence between ...
Rahul Chajwa, C. Rajarshi, Rama Govindarajan, Sriram Ramaswamy   +3 more
openaire   +2 more sources

Dark matter caustics [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
Caustics are a generic feature of the nonlinear growth of structure in the dark matter distribution. If the dark matter were absolutely cold, its mass density would diverge at caustics, and the integrated annihilation probability would also diverge for individual particles participating in them.
White, S., Vogelsberger, M.
openaire   +3 more sources

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source