Results 51 to 60 of about 284,887 (285)

Exactly stable non-BPS spinors in heterotic string theory on tori

, 2012
Considering SO(32) heterotic string theory compactified on a torus of dimension 4 and less, stability of non-supersymmetric states is studied. A non-supersymmetric state with robust stability is constructed, and its exact stability is proven in a large ...
A Sen, A Sen, A Sen, A Sen, A Sen, A Sen, B Stefanski Jr, DJ Gross, E Witten, E Witten, E Witten, J Maiden, J Majumder, J Polchinski, Jihye Seo, K Narain, K Narain, M Bianchi, MR Gaberdiel, MR Gaberdiel, N Quiroz, O Bergman, O Bergman, O Bergman, P Hořava, PH Ginsparg, S Mukhi, S Mukhi   +27 more
core   +1 more source

Kaluza-Klein and H-Dyons in String Theory [PDF]

, 1998
Kaluza-Klein monopole and H-monopole solutions, which are T-dual to each other, are the well-known solutions of string theory compactified on $T^6$. Since string theory in this case has an S-duality symmetry, we explicitly construct the corresponding ...
A. Das, A. Font, A. Giveon, A. Hanany, A. Sen, A. Sen, A. Sen, A. Shapere, C. Hull, C. Hull, D. Gross, D. Zwanziger, D. Zwanziger, E. Alvarez, E. Bergshoeff, E. Cremmer, E. Eyras, E. Witten, G. Gibbons, G. Horowitz, J. Blum, J. Gauntlett, J. Maharana, J. Schwarz, J. Schwarz, J. Schwarz, J. Schwarz, J. Schwinger, J. Schwinger, J. X. Lu, M. Cvetic, M. Cvetic, M. Cvetic, M. de Roo, M. Duff, P. Dirac, P. Ruback, R. Gregory, R. Khuri, R. Khuri, R. Khuri, R. Sorkin, S. J. Rey, S. Roy, Shibaji Roy, T. Banks, Y. Imamura   +46 more
core   +2 more sources

Stability of superconducting strings

Journal of High Energy Physics
Abstract We investigate the stability of superconducting strings as bound states of strings and fermion zero modes at both the classical and quantum levels. The dynamics of these superconducting strings can result in a stable configuration, known as a vorton. We mainly focus on global strings, but the majority of the discussion can
Keisuke Harigaya, Xuce Niu, Wei Xue, Fengwei Yang   +3 more
openaire   +3 more sources

Radially stabilized inflating cosmic strings [PDF]

Physical Review D, 2015
In General Relativity, cosmic strings are well known to produce a static, locally flat spacetime with a wedge removed. If the tension exceeds a critical value, the deficit angle becomes larger than $ 2 $, leading to a compact exterior that ends in a conical singularity.
Niedermann, Florian, Schneider, Robert
openaire   +2 more sources

A Kalman-Based Compensation Strategy for Platoons Subject to Data Loss: Numerical and Empirical Study

Mathematics, 2023
This article considers a homogeneous platoon with vehicles that communicate through channels prone to data loss. The vehicles use a predecessor-following topology, where each vehicle sends relevant data to the next, and data loss is modeled through a ...
Felipe I. Villenas, Francisco J. Vargas, Andrés A. Peters   +2 more
doaj   +1 more source

STABILITY OF AdS BLACK STRINGS [PDF]

International Journal of Modern Physics A, 2009
We review the recent developements in the stability problem and phase diagram for asymptotically locally AdS black strings. First, we quickly review the case of locally flat black string before turning to the case of locally AdS spacetimes.
openaire   +2 more sources

Sampled-Data Cooperative Adaptive Cruise Control for String-Stable Vehicle Platooning with Communication Delays: A Linear Matrix Inequality Approach

Machines
This study aims to propose a sampled-data control technique, utilizing a linear matrix inequality (LMI) approach, to achieve string-stable vehicle platooning in a cooperative adaptive cruise control (CACC) system with communication delays.
Yong Hoon Jang, Han Sol Kim
doaj   +1 more source

Safety Evaluation Method of Gas Well Pipe String Stability in Snubbing Operations

Shiyou jixie, 2023
In order to realize the active control of pipe string safety in gas well snubbing operations and prevent the shale gas blowout accidents caused by pipe string instability,based on mechanical analysis and considering the influences of complex factors such
Fu Biwei, Wei Menghui, Yang Chao
doaj  

Comparison of Simple Strategies for Vehicular Platooning With Lossy Communication

IEEE Access, 2021
This paper studies vehicle platooning with communication channels subject to random data loss. We focus on homogeneous discrete-time platoons in a predecessor-following topology with a constant time headway policy.
Marco A. Gordon, Francisco J. Vargas, Andres A. Peters   +2 more
doaj   +1 more source

Open Heterotic Strings

, 2005
We classify potential cosmic strings according to the topological charge measurable outside the string core. We conjecture that in string theory it is this charge that governs the stability of long strings.
A. Sen, A. Sen, A.D. Sakharov, D.B. Fairlie, E. Witten, E.J. Copeland, J.A. Harvey, J.C. Baez, Joseph Polchinski, K. Becker, K. Olsen, M.J. Duff, N. Arkani-Hamed, N. Moeller, S.H. Shenker, T. Banks, T.W.B. Kibble, V.A. Rubakov   +17 more
core   +2 more sources