Results 91 to 100 of about 284,887 (285)

Stability of the warped black string with nontrivial topology in five-dimensional Anti-de Sitter spacetime

, 2010
We investigate the stability of a new warped black string with nontrivial topologies in five-dimensional Anti-de Sitter spacetime. After studying the linear gravitational perturbation, we find that this black string is unstable when the Kaluza-Klein mass
Lee, Chong Oh, Lin, Chi-Yong, Mann, Robert, Su, Ru-Keng, Wang, Bin, Yin, Shaoyu   +5 more
core   +1 more source

Coupled currents in cosmic strings [PDF]

, 2009
We first examine the microstructure of a cosmic string endowed with two simple Abelian currents. This microstructure depends on two state parameters. We then provide the macroscopic description of such a string and show that it depends on an additional ...
B. Carter, B. Carter, E. P. S. Shellard, L. D. Landau, Marc Lilley, P. Peter, P. Peter, P. G. Drazin, Patrick Peter, Xavier Martin   +9 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Stability of multiquarks in a simple string model [PDF]

, 2007
A simple string model inspired by the strong-coupling regime of Quantum ChromoDynamics is used as a potential for studying the spectrum of multiquark systems with two quarks and two antiquarks, with a careful treatment of the four-body problem.
Richard, J. -M., Valcarce, A., Vijande, J.   +2 more
core   +4 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Comments on No-Hair Theorems and Stabilty of Blackholes

, 1992
In the light of recent blackhole solutions inspired by string theory, we review some old statements on field theoretic hair on blackholes. We also discuss some stability issues. In particular we argue that the two dimensional string blackhole solution is
Adler, Bekenstein, Brustein, Brustein, Callan, Coleman, Das, de Alwis, de Alwis, Demeterfi, Demeterfi, Ellis, Fradkin, Garfinkle, Gibbons, Gibbons, Gibbons, Hartle, Itoi, Lee, Mandal, Misner, S.P. de Alwis, Schwarz, Seiberg, Shapere, Teitelboim, Tseytlin, Witten   +28 more
core   +2 more sources

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

Advanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner, Julian Burkhart, Kateryna Borysova, Chiara Mazzariol, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source

Stability analysis of classical string solutions and the dressing method

Journal of High Energy Physics, 2019
The dressing method is a technique to construct new solutions in non-linear sigma models under the provision of a seed solution. This is analogous to the use of autoBäcklund transformations for systems of the sine-Gordon type.
Dimitrios Katsinis, Ioannis Mitsoulas, Georgios Pastras   +2 more
doaj   +1 more source

Disturbance Observer-Smith Predictor Compensation-Based Platoon Control with Estimation Deviation

Journal of Advanced Transportation, 2022
In the research of cooperative adaptive cruise control, the coupling relationship between the communication delay, the following time headway, and the string stability leads to a stringent limit on the minimum allowable following time headway.
Jiawei Wang, Guanpu Wu, Bohua Sun, Fangwu Ma, Bilin Aksun-Guvenc, Levent Guvenc   +5 more
doaj   +1 more source

A Note on Topological M5-branes and String-Fivebrane Duality

, 2006
We derive the stability conditions for the M5-brane in topological M-theory using kappa-symmetry. The non-linearly self-dual 3-form on the world-volume is necessarily non-vanishing, as is the case also for the 2-form field strengths on coisotropic branes
Bao, Ling, Cederwall, Martin, Nilsson, Bengt E. W.   +2 more
core   +1 more source