Results 71 to 80 of about 18,552 (304)
The enhancon mechanism in string theory [PDF]
, 2002 The enhancon mechanism is a specific phenomenon in string theory which resolves a certain naked spacetime singularity arising in the supergravity description related to N = 2 supersymmetric pure gauge theory.
Järv, Laur
core
Cap products in string topology [PDF]
Algebraic & Geometric Topology, 2009 Chas and Sullivan showed that the homology of the free loop space LM of an oriented closed smooth finite dimensional manifold M admits the structure of a Batalin-Vilkovisky (BV) algebra equipped with an associative product called the loop product and a Lie bracket called the loop bracket.
openaire +4 more sources
Geometry and Topology of String Junctions [PDF]
Journal of Singularities, 2016 We study elliptic fibrations by analyzing suitable deformations of the fibrations and vanishing cycles. We introduce geometric string junctions and describe some of their properties. We show how the structure of the geometric string junctions is naturally related to the Lie algebra structures of the associated singularities.
Grassi, Antonella +2 more
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Advanced Materials Interfaces, EarlyView.Dynamic mechanical loading of outer meniscus fibrochondrocytes increases extracellular vesicle (EV) yield and alters EV composition. When applied to progenitor cells, these mechanically primed EVs modulate the expression of matrix‐related genes.
Catherine Cheung +6 more
wiley +1 more source
Aspects of finite temperature corrections in string theory [PDF]
, 2011 PhDIn this thesis some aspects of temperature corrections in string theory are analyzed: in particular, we study the thermal contributions to the 4 dimensional effective potential arising from string theory compactifications.
Calo, Vincenzo
core
String topology for stacks [PDF]
, 2012 We establish the general machinery of string topology for differentiable stacks. This machinery allows us to treat on an equal footing free loops in stacks and hidden loops.
Xu, P. +7 more
core +2 more sources
On the string topology of symmetric spaces of higher rank [PDF]
The homology of the free and the based loop space of a compact globally symmetric space can be studied through explicit cycles. We use cycles constructed by Bott and Samelson and by Ziller to study the string topology coproduct and the Chas-Sullivan ...
Kupper, Philippe, Stegemeyer, Maximilian
core +5 more sources
Topological strings and Nekrasov's formulas [PDF]
Journal of High Energy Physics, 2003 We apply the method of geometric transition and compute all genus topological closed string amplitudes compactified on local {\bf F}_0 by making use of the Chern-Simons gauge theory. We find an exact agreement of the results of our computation with the formula proposed recently by Nekrasov for {\cal N}=2 SU(2) gauge theory with two parameters βand ...
Eguchi, Tohru, Kanno, Hiroaki
openaire +2 more sources
Advanced Robotics Research, EarlyView.This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino +7 more
wiley +1 more source
Instanton moduli, topology and the bosonic/heterotic string origins
Journal of High Energy PhysicsWe construct new supersymmetric NS(-1)-branes supported by the SU(2) × SU(2) ’t Hooft instantons in 𝒩 = 1, D = 4 supergravity. We show that although the magnetic 3-form string flux is invariant under the variations of instanton moduli, the string-frame ...
Liang Ma, H. Lü
doaj +1 more source