Results 151 to 160 of about 137,892 (317)
Spontaneous compactification in 2D induced quantum gravity
, 1992 Spontaneous compactification ---on a $R^1\times S^1$ background--- in 2D induced quantum gravity (considered as a toy model for more fundamental quantum gravity) is analyzed in the gauge-independent effective action formalism.
Elizalde, E., Odintsov, S. D.
core +2 more sources
Black Hole Evolution Traced Out with Loop Quantum Gravity
Physics, 2018 Loop quantum gravity—a theory that extends general relativity by quantizing spacetime—predicts that black holes evolve into white holes.
C. Rovelli
semanticscholar +1 more source
Soft Robots Proprioception Through Stretchable Laser‐Induced Graphene Strain Sensors
Advanced Intelligent Systems, EarlyView.This study demonstrates the potential of laser‐induced graphene and silicone sensors for soft pneumatic grippers’ proprioception. The sensors are thin, stretchable, mechanically transparent, and easy to integrate. Finite‐element method analysis identifies the finger's neutral bending plane and four sensor positions are tested to validate the ...
Giovanna De Luca +6 more
wiley +1 more source
Loop Quantum Gravity: Four Recent Advances and a Dozen Frequently Asked Questions
, 2007 As per organizers' request, my talk at the 11th Marcel Grossmann Conference consisted of two parts. In the first, I illustrated recent advances in loop quantum gravity through examples.
Ashtekar, Abhay
core +1 more source
Thermally Responsive Architected Actuators with Programmable Shape Morphing and Tunable Stiffness
Advanced Intelligent Systems, EarlyView.A tunable‐stiffness architected morphing structure enables programmable shape transformation and load‐bearing functionality through thermal activation. By tessellating rigid particles with shape memory alloy‐based soft connectors, the system achieves simultaneous morphing and stiffness modulation.
Yu Chen +4 more
wiley +1 more source
Observational Exclusion of a Consistent Quantum Cosmology Scenario
, 2015 It is often argued that inflation erases all the information about what took place before it started. Quantum gravity, relevant in the Planck era, seems therefore mostly impossible to probe with cosmological observations.
Barrau, Aurelien +3 more
core +3 more sources
Symmetry Breaking Metamaterial Sleeve Actuators
Advanced Intelligent Systems, EarlyView.Metamaterial sleeves are designed to impart to a soft inflatable structure, nonlinear characteristics within the pressure–volume domain. By tuning the unit cells of the metamaterial sleeve, symmetry breaking is achieved during the inflation–deflation cycle.
Imran Qayyum Mundial +3 more
wiley +1 more source
Autonomous Sorting of Beads in a 3D Environment Using Levitating Magnetic Microrobots
Advanced Intelligent Systems, EarlyView.An untethered, magnetically actuated microrobot autonomously collects, weighs, classifies, and sorts passive particles in 3D environments. The system integrates motion control, trajectory planning, and action scheduling to perform fully automated operations.
Franco N. Piñan Basualdo +3 more
wiley +1 more source
Chiral Induction and Memory via Supramolecular Deracemization
Angewandte Chemie, EarlyView.The helical chirality of a dynamic crown‐ether switch can, by light‐ or redox‐switching to a prochiral state, be erased and subsequently stereoselectively re‐formed by relaxation in the presence of a point‐chiral ammonium guest. This unique supramolecular deracemization enables facile transfer and stable memory of chiral information. Abstract Chirality
Robert Hein +3 more
wiley +2 more sources
Intersecting Quantum Gravity with Noncommutative Geometry - a Review
Symmetry, Integrability and Geometry: Methods and Applications, 2012 We review applications of noncommutative geometry in canonical quantum gravity. First, we show that the framework of loop quantum gravity includes natural noncommutative structures which have, hitherto, not been explored.
Johannes Aastrup +1 more
doaj +1 more source