Results 31 to 40 of about 4,611 (302)

A study of traversable wormhole solutions in extended teleparallel theory of gravity with matter coupling

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
This study is devoted to explore the physical aspects of wormhole geometry under embedded class-1 spacetime in $$f(T,\tau )$$ f ( T , τ ) gravity, where $$\tau $$ τ denotes the trace of the energy-momentum tensor and T is the torsion.
Allah Ditta   +4 more
doaj   +1 more source

Complete Orthogonal Appell Systems for Spherical Monogenics [PDF]

open access: yesComplex Analysis and Operator Theory, 2011
In this paper, we investigate properties of Gelfand-Tsetlin bases mainly for spherical monogenics, that is, for spinor valued or Clifford algebra valued homogeneous solutions of the Dirac equation in the Euclidean space. Recently it has been observed that in dimension 3 these bases form an Appell system.
openaire   +3 more sources

A Generic Embedding Class-I Model via Karmarkar Condition in fℛ,T Gravity

open access: yesAdvances in Astronomy, 2021
In the present work, we investigate the existence of compact star model in the background of fℛ,T gravity theory, where ℛ represents the Ricci scalar and T refers to the energy-momentum tensor trace.
M. Zubair, Saira Waheed, Hina Javaid
doaj   +1 more source

Universal bounds on the size of a black hole

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
For static black holes in Einstein gravity, if matter fields satisfy a few general conditions, we conjecture that three characteristic parameters about the spatial size of black holes, namely the outermost photon sphere area $$A_{\mathrm {ph,out}}$$ A ph
Run-Qiu Yang, H. Lü
doaj   +1 more source

The axisymmetric branching behavior of complete spherical shells [PDF]

open access: yesQuarterly of Applied Mathematics, 1981
The purpose of this paper is to describe the axisymmetric branching behavior of complete spherical shells subjected to external pressure. By means of an asymptotic integration technique (based on the smallness of the ratio of the shell thickness to the shell radius) applied directly to a differential equation formulation, we are able to continue the ...
Lange, Charles G.   +1 more
openaire   +1 more source

Effects of the homopolymer molecular weight on a diblock copolymer in a 3D spherical confinement

open access: yesBMC Chemistry, 2019
The morphologies of a diblock copolymer spherically confined within a homopolymer were investigated by using the static self-consistent field theory method. A homogeneous A-B diblock copolymer sphere was surrounded by a homopolymer C.
Dung Q. Ly, Charalampos Makatsoris
doaj   +1 more source

Ricci Curvature on Birth-Death Processes

open access: yesAxioms, 2023
In this paper, we study curvature dimension conditions on birth-death processes which correspond to linear graphs, i.e., weighted graphs supported on the infinite line or the half line. We give a combinatorial characterization of Bakry and Émery’s CD(K,n)
Bobo Hua, Florentin Münch
doaj   +1 more source

Complete Irreducibility and X-Spherical Representations

open access: yesJournal of Functional Analysis, 1993
Let \(G\) be a locally compact group, \(K\) a compact subgroup and \(\chi:K \to \{| z |=1\}\) be a continuous homomorphism. Let \(\pi\) be a continuous representation of \(G\) on a complete locally convex space \(V\) such that the subspace \(V(\chi)=\{v \in V \mid \pi(k) v=\chi(k)v,\;k \in K\}\) is one-dimensional. The author shows that \(\pi\) is then
openaire   +1 more source

The fate of black hole horizons in semiclassical gravity

open access: yesPhysics Letters B, 2018
The presence of a horizon is the principal marker for black holes as they appear in the classical theory of gravity. In General Relativity (GR), horizons have several defining properties.
Clément Berthiere   +2 more
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy