Results 21 to 30 of about 117,051,059 (274)

Topological and Geometric Methods in Group Theory

Oberwolfach Reports, 2007
The focus of this meeting was the use of topological and geometric methods to study infinite discrete groups. These methods are increasingly being supplemented by powerful new techniques from analysis. Key topics included group actions on CAT(0) and tree-like spaces, filling invariants, cohomology, K-theory and
Martin R. Bridson, Peter H. Kropholler, Karen Vogtmann   +2 more
openaire   +1 more source

Spin pumping in ferromagnet-topological insulator-ferromagnetheterostructures [PDF]

, 2015
Topological insulators (TIs) are enticing prospects for the future of spintronics due to their large spin-orbit coupling and dissipationless, counter-propagating conduction channels in the surface state.
Baker, A. A., Collins-Mcintyre, Liam, van der Laan, G., Hesjedal, Thorsten, Figueroa, A. I., Collins-Mcintyre, L. J., Baker, Alexander, Hesjedal, T., Figueroa, A.I.   +8 more
core   +1 more source

Remarks on quiver gauge theories from open topological string theory [PDF]

, 2010
We study effective quiver gauge theories arising from a stack of D3-branes on certain Calabi-Yau singularities. Our point of view is a first principle approach via open topological string theory.
Carqueville, N., Nils Carqueville, Alexander Quintero Vélez, Quintero Velez, A.   +3 more
core   +1 more source

Effects of spin symmetry breaking in topological insulators [PDF]

, 2015
Topological insulators are one of the most thoroughly investigated systems in condensed matter physics over the last years. In these systems, a prominent role is inevitably taken by time-reversal symmetry, which leads to Kramers theorem and symmetry ...
Orth, Christoph
core   +1 more source

Altered whole-brain resting-state functional connectivity and brain network topology in typhoon-related post-traumatic stress disorder

Therapeutic Advances in Psychopharmacology, 2023
Background: Altered resting-state functional connectivity has been found in patients with post-traumatic stress disorder (PTSD). However, the alteration of resting-state functional connectivity at whole-brain level in typhoon-traumatized individuals with
Hui Juan Chen, Jun Ke, Jie Qiu, Qiang Xu, Yuan Zhong, Guang Ming Lu, Yanglei Wu, Rongfeng Qi, Feng Chen   +8 more
doaj   +1 more source

Topological structure of the magnetic solar corona [PDF]

, 2007
The solar corona is a highly complex and active plasma environment, containing many exotic phenomena such as solar flares, coronal mass ejections, prominences, coronal loops, and bright points.
Maclean, Rhona Claire
core   +2 more sources

Entanglement entropy and edge modes in topological string theory. Part I. Generalized entropy for closed strings

Journal of High Energy Physics, 2021
Progress in identifying the bulk microstate interpretation of the Ryu-Takayanagi formula requires understanding how to define entanglement entropy in the bulk closed string theory.
William Donnelly, Yikun Jiang, Manki Kim, Gabriel Wong   +3 more
doaj   +1 more source

Topological States of Matter [PDF]

, 2012
My research program is focused on the study of elastic deformation and topological defects in two materials: graphene and topological insulators. In both systems at low energies the electrons have a nearly linear spectrum, i.e.
Parente, Vincenzo
core   +1 more source

Topological defects in conformal field theory [PDF]

, 2023
openThis thesis objective is to characterize the topological defects of a particular two dimensional conformal quantum field theory. Topological defects can be interpreted as generalizations of global symmetries and, between other things, give rise to ...
CARIOLATO, DARIO
core  

Altered Brain Functional Connectivity and Topological Structural in Girls with Idiopathic Central Precocious Puberty: A Graph Theory Analysis Based on Resting-State fMRI

Children
Objectives: This study aimed to investigate changes in brain functional connectivity (FC) and topological structure in girls with idiopathic central precocious puberty (ICPP) using complex network theory analysis. Methods: Resting-state fMRI data from 53
Lu Tian, Yan Zeng, Helin Zheng, Jinhua Cai   +3 more
doaj   +1 more source