Results 61 to 70 of about 5,915,931 (293)
European Physical Journal C: Particles and Fields, 2019 Energy momentum tensor of a conformally coupled quantum scalar field in five dimensional warped cosmological spacetimes is studied. We look at situations where the four dimensional part represents a cosmological thick brane and the scale of the extra ...
Suman Ghosh
doaj +1 more source
Waveguide Photoactuators: Materials, Fabrication, and Applications
Advanced Robotics Research, EarlyView.Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi +4 more
wiley +1 more source
Spacetimes with Pseudosymmetric Energy-momentum Tensor [PDF]
, 2016 The object of the present paper is to introduce spacetimes with pseudosymmetricenergy-momentum tensor. In this paper at first we consider the relation \(R(X,Y)\cdot T=fQ(g,T)\), that is, the energy-momentumtensor \(T\) of type (0,2) is pseudosymmetric ...
Mallick, Sahanous, De, Uday Chand
core +2 more sources
Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion
Advanced Robotics Research, EarlyView.A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza +3 more
wiley +1 more source
The energy-momentum tensor on the lattice: The scalar case
Nuclear Physics B, 1988 Abstract We show in an explicit example how to construct the energy-momentum tensor on the lattice satisfying the requirements of conservation and which gives rise to the correct scale anomaly in the limit of zero lattice spacing. This method is of general nature and can be applied also to gauge theories.
S. CARACCIOLO +3 more
openaire +3 more sources
Hybrid Continuum Robot Designs and Architectures for Healthcare Applications
Advanced Robotics Research, EarlyView.Hybrid continuum robots represent an emerging class of flexible manipulators that blend materials, structures, and actuation concepts from the established fields of soft and continuum robotics. This review introduces an accessible framework to distinguish key hybridization approaches, surveys current designs aimed at complex clinical applications, and ...
Burak Ozdemir +4 more
wiley +1 more source
The two-loop energy–momentum tensor within the gradient-flow formalism
European Physical Journal C: Particles and Fields, 2018 The gradient-flow formulation of the energy–momentum tensor of QCD is extended to NNLO perturbation theory. This means that the Wilson coefficients which multiply the flowed operators in the corresponding expression for the regular energy–momentum tensor
Robert V. Harlander +2 more
doaj +1 more source
Unruh effect universality: emergent conical geometry from density operator
Journal of High Energy Physics, 2020 The Unruh effect has been investigated from the point of view of the quantum statistical Zubarev density operator in space with the Minkowski metric.
Georgy Y. Prokhorov +2 more
doaj +1 more source
On the energy-momentum tensor in Moyal space [PDF]
, 2015 26 pagesInternational audienceAfter reviewing the known results for the definition and properties of the energy-momentum tensor(s) in Minkowski space, we study the properties of the energy-momentum tensor of gauge fields coupled to matter in non ...
François Gieres +7 more
core +1 more source
Advanced Science, EarlyView.The symmetry‐driven coexistence of altermagnetism and (anti)ferroelectricity in perovskites shows a strong dimensional dependence. Upon reducing the system from bulk to the two‐dimensional limit, only C‐type antiferromagnetic order retains ferroelectrically switchable altermagnetism, whereas A‐ and G‐type orders become conventional antiferromagnets ...
Zhou Cui +6 more
wiley +1 more source