Results 91 to 100 of about 63,236 (296)

Black Hole Bounces on the Road to Quantum Gravity

Universe, 2018
Quantum resolutions of the space-time singularity at the end of gravitational collapse may provide hints towards the properties of a final theory of Quantum-Gravity.
Daniele Malafarina
doaj   +1 more source

On the back reaction of gravitational and particle emission and absorption from straight thick cosmic strings: A toy model

, 1999
The emission and absorption of gravitational waves and massless particles of an infinitely long straight cosmic string with finite thickness are studied.
A. Vilenkin, A. Z. Wang, A. Z. Wang, Anzhong Wang, E. M. De Sa, E. Poisson, E. Shaver, J. A. Stein-Schabes, K. S. Thorne, M. L. Bedran, P. S. Letelier, P. Szekeres, R. A. Battye, S. J. Campbell, T. W. B. Kibble, U.-L. Pen, Yumei Wu   +16 more
core   +1 more source

Burn‐Safe Biodegradable Magnetocaloric Composites for Temperature‐Controlled Biomedical Applications

Advanced Science, EarlyView.
This work investigates a magnetocaloric (Mn,Fe)2(P,Si) compound tailored for precise, self‐regulating heating in biomedical use. With a Curie temperature tuned at 43 °C, it enables therapeutic activation without overheating. Encapsulation in a composite ensures controlled temperature rise under an alternating magnetic field (AMF), with high ...
Pornpawee Uliss, Vasiliki Gkouzioti, Wuliji Hanggai, Friso Kahler, Elena Aprea, Qi Jia, Jean‐Philippe Frimat, Ekkes Brück, Clementine M. Boutry   +8 more
wiley   +1 more source

On the polynomial degeneracy of Ricci invariants and spacetime singularity

Physics Letters B
We explore the connection of a general relativistic matter-energy momentum tensor with the polynomial degeneracies of curvature invariants defined in Riemannian geometry.
Soumya Chakrabarti
doaj   +1 more source

Integrability of the Einstein-nonlinear SU(2) $$\sigma $$ σ -model in a nontrivial topological sector

European Physical Journal C: Particles and Fields, 2017
The integrability of the $$\Lambda $$ Λ -Einstein-nonlinear $$SU(2)\,\sigma $$ S U ( 2 ) σ -model with nonvanishing cosmological charge is studied. We apply the method of singularity analysis of differential equations and we show that the equations for ...
Andronikos Paliathanasis, Tim Taves, P. G. L. Leach   +2 more
doaj   +1 more source

Plant Robotics for Sustainable and Environmentally Friendly Robots: Insights from Actuation Characteristics

Advanced Science, EarlyView.
Plants are promising materials for building sustainable and eco‐friendly robots due to their inherent multifunctionality, with actuation playing a crucial role. This article focuses on the physical movements of plants and, from the perspective of actuation characteristics, explores representative plant species and their behaviors, the current state of ...
Kazuya Murakami, Misao Sato, Yu Ikeda, Tatsuhiro Horii, Yukari Nagatoshi, Miki Fujita, Toshinori Fujie, Yasunari Fujita, Jun Shintake   +8 more
wiley   +1 more source

Gravitational collapse and naked singularities

, 2004
Gravitational collapse is one of the most striking phenomena in gravitational physics. The cosmic censorship conjecture has provided strong motivation for researches in this field.
A M Abrahams, A Ori, B C Nolan, B J Carr, C Gundlach, C J S Clarke, C R Evans, C Vaz, D Christodoulou, D M Eardley, D W Neilsen, F C Mena, F Echeverria, G Lemaître, H Bondi, H Iguchi, H Iguchi, H Iguchi, J M Martin-Garcia, J M Martín-García, J R Oppenheimer, K S Thorne, M W Choptuik, P S Joshi, P S Joshi, PRCT Pereira, R C Tolman, R P A C Newman, R Penrose, R Penrose, S A Hayward, S Barve, S Jhingan, S L Shapiro, S S Deshingkar, S S Deshingkar, S W Hawking, T A Apostolatos, T Chiba, T Harada, T Harada, T Harada, T Harada, T Harada, T Harada, T Koike, T Nakamura, T P Singh, T Tanaka, Tomohiro Harada   +49 more
core   +1 more source

A Quantum Framework for Protein Binding‐Site Structure Prediction on Utility‐Level Quantum Processors

Advanced Science, EarlyView.
This study presents a hybrid quantum‐classical framework for accurate prediction of protein structures on utility‐level quantum processors. We evaluate the practical application of the Variational Quantum Eigen‐solver (VQE) in protein structure prediction and demonstrate its superiority over state‐of‐the‐art deep learning methods in molecular docking ...
Yuqi Zhang, Yuxin Yang, William Martin, Kingsten Lin, Zixu Wang, Cheng‐Chang Lu, Weiwen Jiang, Ruth Nussinov, Joseph Loscalzo, Qiang Guan, Feixiong Cheng   +10 more
wiley   +1 more source

(D-E)-dimensional brane worlds and de Rham distribution formalism: Singular split versus compactification, restrictions on scenario and revision of gravitational energy problem [PDF]

, 2000
Konstantin G. Zloshchastiev
openalex   +1 more source

Future of the universe in modified gravitational theories: Approaching to the finite-time future singularity

, 2008
We investigate the future evolution of the dark energy universe in modified gravities including $F(R)$ gravity, string-inspired scalar-Gauss-Bonnet and modified Gauss-Bonnet ones, and ideal fluid with the inhomogeneous equation of state (EoS).
Abdalla M C B, Agarwal N Bean R, Balakin A B, Bamba K, Bamba K, Bamba K, Barbaoza E M Lemos N A, Barrow J D, Barrow J D, Brevik I Gorbunova O, Calderon H, Carter B M N, Cattoen C, Codello A Percacci R Rahmede C, Cognola G, Cortes J L Indurain J, Eling C Jacobson T Mattingly D, Hollenstein L Lobo F S N, Kang J U Panotopoulos G, Kazuharu Bamba, Komatsu E (WMAP Collaboration), Lobo F S N, McInnes B, Nojiri S, Nojiri S, Nojiri S Odintsov S D, Nojiri S Odintsov S D, Sergei D Odintsov, Shin’ichi Nojiri, Sotiriou T P Faraoni V, Tretyakov P   +30 more
core   +1 more source