Results 31 to 40 of about 4,519,740 (175)

Vortex particles in axially symmetric fields and applications of the quantum Busch theorem

open access: yesNew Journal of Physics, 2021
The possibilities to accelerate vortex electrons with orbital angular momentum (OAM) to relativistic energies and to produce vortex ions, protons, and other charged particles crucially depend on whether the OAM is conserved during the acceleration and on
Dmitry Karlovets
doaj   +1 more source

Polar compactons and solitons in a two dimensional optical waveguide: Theory and simulations

open access: yesResults in Optics, 2023
The propagation of optical cylindrical compactons and solitons in a two dimensional nonlocal nonlinear waveguide is deeply investigated by carrying a particular emphasis on its nonlinear response function.
Fabien Kenmogne   +6 more
doaj   +1 more source

Strongly pseudo-convex CR space forms

open access: yesComplex Manifolds, 2019
For a contact manifold, we study a strongly pseudo-convex CR space form with constant holomorphic sectional curvature for the Tanaka-Webster connection.
Cho Jong Taek
doaj   +1 more source

On weakly $\phi $-symmetric Kenmotsu Manifolds

open access: yes, 2012
summary:The object of the present paper is to study weakly $\phi $-symmetric and weakly $\phi $-Ricci symmetric Kenmotsu manifolds. It is shown that weakly $\phi $-symmetric and weakly $\phi $-Ricci symmetric Kenmotsu manifolds are $\eta ...
Hui, Shyamal Kumar
core   +1 more source

Towards exotic matter and discrete non-abelian symmetries in F-theory

open access: yesJournal of High Energy Physics, 2018
We present a prescription in F-theory for realizing matter in “exotic” representations of product gauge groups. For 6D vacua, bifundamental hypermultiplets are engineered by starting at a singular point in moduli space which includes 6D superconformal ...
Mirjam Cvetič   +2 more
doaj   +1 more source

Riemann solitons on generalized weakly ω-symmetric α-cosymplectic manifolds [PDF]

open access: yesSurveys in Mathematics and its Applications, 2021
Generalized quasi-conformal curvature tensor (ω-tensor) has the flavor of conformal, conharmonic, concircular, projective, m-projective, W1-curvature, W2-curvature and W4-curvature tensors.
Sabina Eyasmin   +2 more
doaj  

On Weakly Symmetric and Weakly Conformally Symmetric Spaces Admitting Veblen Identities [PDF]

open access: yes, 2011
In the present paper some properties involving curvature tensor,conformal curvature tensor, Ricci tensor and scalar curvature, on weakly symmetric, weakly conformally symmetric and pseudo symmetric spaces are ...
Hari Baskar, R.   +4 more
core   +1 more source

Bose-Einstein condensates in quasiperiodic lattices: Bosonic Josephson junction, self-trapping, and multimode dynamics

open access: yesPhysical Review Research, 2022
A Bose-Einstein condensate loaded in a one-dimensional bichromatic optical lattice with constituent sublattices having incommensurate periods is considered. Using the rational approximations for the incommensurate periods, we show that below the mobility
H. C. Prates   +2 more
doaj   +1 more source

On a type of spacetime [PDF]

open access: yesMathematica Moravica, 2014
The object of the present paper is to study a special type of spacetime. It is proved that in a conformally flat (W RS)4 spacetime with non-zero scalar curvature the vector field p defined by ɡ(X, p) = E(X) is irrotational and the integral curves of the ...
Mallick Sahanous, Chand De Uday
doaj  

Demonstrating Photon Ring Existence with Single-baseline Polarimetry

open access: yesThe Astrophysical Journal Letters, 2023
Images of supermassive black hole accretion flows contain features of both curved spacetime and plasma structure. Inferring properties of the spacetime from images requires modeling the plasma properties, and vice versa.
Daniel C. M. Palumbo   +3 more
doaj   +1 more source

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