Results 71 to 80 of about 5,317 (165)
Quantum Geometrodynamics for Black Holes and Wormholes
, 1997 . The geometrodynamics of the spherical gravity with a selfgravitating thin dust shell as a source is constructed. The shell Hamiltonian constraint is derived and the corresponding Schroedinger equation is obtained. This equation appeared to be a finite
A.M. Boyarsky, Wormholes, V.A. Berezin
core
Gravitational Lensing by Lemaître–Tolman–Bondi Wormholes in a Friedmann Universe
UniverseThe Lemaître–Tolman–Bondi (LTB) solution to the Einstein equations describes the dynamics of a self-gravitating spherically symmetric dust cloud with an arbitrary density profile and any distribution of initial velocities, encoded in three arbitrary ...
Kirill A. Bronnikov +2 more
doaj +1 more source
A Conceptual Framework for Assessing Soil Structural Attributes Across Contrasting Land‐Use Types
European Journal of Soil Science, Volume 77, Issue 3, May–June 2026.ABSTRACT Soil structure governs ecosystem functioning across scales, but its complexity requires integrative approaches that capture geometric and functional properties. This study proposes a methodological framework that integrates field‐based visual evaluation of soil structure (VESS), X‐ray computed tomography (CT) and soil hydraulic property (SHP ...
Niklas Schmücker +4 more
wiley +1 more source
Hilbert space of wormholes in 1+1 dimensional gravitation theory
, 1999 In this paper, we study the complete quantization of the homogeneous isotropic closed universe and prove that 1+1 dimensional quantum wormholes can be invested with a Hilbert-space structure, the inner product being naturally induced by the mini ...
Shen, YG, Tan, ZQ
core
A Killing vector treatment of multiboundary wormholes
Journal of High Energy Physics, 2020 The two-sided BTZ black hole has been instrumental in elucidating several aspects of AdS/CFT. Similarly, multiboundary wormholes provide a useful and rich arena in which probing questions of quantum gravity can be posed and explored.
Elena Caceres +3 more
doaj +1 more source
Engineering Reports, Volume 8, Issue 4, April 2026.Rat swarm position update mechanism in HRSA‐RSO, illustrating the collective exploration behavior around the prey target (A*, B*). ABSTRACT The permutation flow shop scheduling problem (PFSSP) is a classical NP‐hard problem that aims to determine an optimal job sequence across machines to minimize makespan.
Mourad Mzili +5 more
wiley +1 more source
Stability of Thin-Shell wormholes [PDF]
, 2012 Doctor of Philosophy in Physics. Thesis (Ph.D.)--Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Physics, 2012. Supervisor: Prof. Dr.
Amirabi, Zahra
core
, 2003 Smooth-throat wormholes are treated as possessing quantum fluctuation energy with a scalar massive field as its source. The heat kernel coefficients of the Laplace operator are calculated in the background of the arbitrary-profile throat wormhole with ...
Khusnutdinov N.
core
Wormholes in conformal gravity
, 2018 We present a new class of solutions for static spherically symmetric wormhole spacetimes in conformal gravity and outline a detailed method for their construction.
Pfeifer, Christian +3 more
core +1 more source
After averaging over fermion couplings, SYK has a collective field description that sometimes has “wormhole” solutions. We study the fate of these wormholes when the couplings are fixed. Working mainly in a simple model, we find that the wormhole saddles
Phil Saad +3 more
core +1 more source