Results 41 to 50 of about 35,203 (149)

Gauge theories of Josephson junction arrays [PDF]

, 1995
We show that the zero-temperature physics of planar Josephson junction arrays in the self-dual approximation is governed by an Abelian gauge theory with periodic mixed Chern-Simons term describing the charge-vortex coupling.
Diamantini, M.C., Sodano, P., Trugenberger, C.A.   +2 more
core   +2 more sources

Simplification of exponential factors of irregular connections on P1${\mathbb {P}}^1$

Bulletin of the London Mathematical Society, Volume 58, Issue 3, March 2026.
Abstract We give an explicit algorithm to reduce the ramification order of any exponential factor of an irregular connection on P1$\mathbb {P}^1$, using the same types of basic operations as in the Katz–Deligne–Arinkin algorithm for rigid irregular connections.
Jean Douçot
wiley   +1 more source

Non-Euclidean geometry in nature

, 2017
I describe the manifestation of the non-Euclidean geometry in the behavior of collective observables of some complex physical systems. Specifically, I consider the formation of equilibrium shapes of plants and statistics of sparse random graphs.
Nechaev, Sergei
core   +1 more source

New Horizons for Black Holes and Branes [PDF]

, 2010
We initiate a systematic scan of the landscape of black holes in any spacetime dimension using the recently proposed blackfold effective worldvolume theory.
B Carter, B Carter, B Kleihaus, B Kol, B Kol, C Helfgott, D Astefanesei, D Gorbonos, D Kastor, GJ Galloway, GW Gibbons, H Elvang, H Elvang, H Elvang, H Elvang, H Iguchi, H Kudoh, HS Reall, J Camps, J Evslin, J Evslin, J Witt Le, JJ Blanco-Pillado, K Izumi, MM Caldarelli, MM Caldarelli, NA Obers, Niels A. Obers, OJC Dias, R Emparan, R Emparan, R Emparan, R Emparan, R Emparan, R Emparan, Roberto Emparan, S Hollands, S Hollands, SS Gubser, T Harmark, T Harmark, T Harmark, T Harmark, T Wiseman, Troels Harmark, V Cardoso, V Moncrief, V Niarchos, Vasilis Niarchos, Y Chen   +49 more
core   +3 more sources

Research on Three‐Dimensional Autonomous Obstacle Avoidance Path Planning Methods for UAVs

Transactions on Emerging Telecommunications Technologies, Volume 37, Issue 2, February 2026.
This study presents a three‐dimensional autonomous obstacle‐avoidance path planning method for unmanned aerial vehicles (UAVs) based on a deep reinforcement learning (DRL)‐enhanced Mayfly Algorithm. The traditional Mayfly Algorithm suffers from issues such as random initial population generation and slow convergence.
Chong Wu, Hao Cheng, Hua Wang
wiley   +1 more source

Two‐dimensional direction of arrival estimation for coprime planar arrays via a computationally efficient one‐dimensional partial spectral search approach

IET Radar, Sonar & Navigation, 2017
The authors investigate the problem of two‐dimensional (2D) direction of arrival (DOA) estimation of multiple signals for coprime planar arrays (CPAs) in this study and they propose a computationally efficient 1D partial spectral search approach based on multiple signal classification (MUSIC) algorithm.
Zheng Wang, Zhang Xiaofei, Shi Zhan
openaire   +1 more source

Gauge Threshold Corrections in Intersecting Brane World Models [PDF]

, 2003
We calculate the one-loop corrections to gauge couplings in N=1 supersymmetric brane world models, which are realized in an type IIA orbifold/orientifold background with several stacks of D6 branes wrapped on 3-cycles with non-vanishing intersections ...
Abouelsaood, Abouelsaood, Aldazabal, Aldazabal, Angelantonj, Angelantonj, Antoniadis, Antoniadis, Antoniadis, Antoniadis, Apostol, Ardalan, Bachas, Bachas, Bailin, Berkooz, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Blumenhagen, Cremades, Cremades, Cremades, Cvetic, Cvetic, Cvetic, Cvetic, Cvetic, Dixon, Foerger, Fradkin, Friedmann, Förste, Förste, Förste, Ghilencea, Gomis, Gradshteyn, Guralnik, Hammou, Harvey, Harvey, Honecker, Ibanez, Ibanez, Ibanez, Kaplunovsky, Kiritsis, Kiritsis, Kokorelis, Lerche, Lerche, Lerche, Lerche, Lerche, Lüst, Mayr, Mayr, Mayr, Mayr, Metsaev, Nilles, Nilles, Nilles, Pradisi, Rabadan, Schellekens, Schellekens, Schreyer, Shiu, Stieberger, Stieberger, Tseytlin, Uranga   +82 more
core   +3 more sources

An asymptotic local–global theorem on heights of some Kleinian group orbits

Journal of the London Mathematical Society, Volume 113, Issue 2, February 2026.
Abstract We prove an asymptotic local–global theorem on the heights of point orbits of thin subgroups of Bianchi groups in H3$\mathbb {H}^3$.
Xuanxuan Xiao, Xin Zhang
wiley   +1 more source

Random Lie bracket on sl2(Fp)

Random Structures &Algorithms, Volume 68, Issue 1, January 2026.
ABSTRACT We study a random walk on the Lie algebra sl2(Fp)$$ {\mathfrak{sl}}_2\left({\mathbf{F}}_p\right) $$ where new elements are produced by randomly applying adjoint operators of two generators. Focusing on the generic case where the generators are selected at random, we analyze the limiting distribution of the random walk and the speed at which it
Urban Jezernik, Matevž Miščič
wiley   +1 more source

A Direct Localization Method for Coprime Arrays Based on Averaging of Redundant Data of Virtual Array Elements

IET Signal Processing, Volume 2026, Issue 1, 2026.
To address the issue that the traditional direct position determination (DPD) method for coprime arrays (CAs) has limited performance in scenarios with low signal‐to‐noise ratio (SNR) and small quantity of observation data, a progressive optimization method based on the averaging of redundant data from virtual array elements is proposed. This method is
Hongzhen Wang, Ding Wang, Jiexin Yin, Fuquan Nie, Jiajia Guo   +4 more
wiley   +1 more source