Results 131 to 140 of about 32,973 (309)
Advanced Intelligent Systems, EarlyView.A physics‐guided deep learning framework, ParamNet, is introduced for the intelligent self‐inversion of vacuum optical tweezers. By fuzing dual‐branch time–frequency features with physical dynamical constraints, it achieves high‐accuracy calibration of trap parameters from short‐window, low‐frequency trajectories, outperforming traditional methods ...
Qi Zheng +4 more
wiley +1 more source
One‐Shot Multimaterial 3D Printing of a Flexible Spine for a Robotic Fish Prototype
Advanced Intelligent Systems, EarlyView.A one‐shot multimaterial 3D printing approach enables a monolithic soft robotic fish integrating a compliant spine and rigid vertebrae. Electromagnetic linear actuators drive tendon‐based transmission, producing controlled tail oscillations. Finite element modeling and experiments show strong agreement, while optimized material selection improves ...
Marco Colletta +3 more
wiley +1 more source
Horizon entropy with loop quantum gravity methods
Physics Letters B, 2015 We show that the spherically symmetric isolated horizon can be described in terms of an SU(2) connection and an su(2)-valued one-form, obeying certain constraints.
Daniele Pranzetti, Hanno Sahlmann
doaj +1 more source
New perspective on matter coupling in 2D quantum gravity
, 1999 We provide compelling evidence that a previously introduced model of nonperturbative 2D Lorentzian quantum gravity exhibits (two-dimensional) flat-space behavior when coupled to Ising spins.
Ambj¢rn, J. +11 more
core +1 more source
Does Quantum Mechanics Clash with the Equivalence Principle – and Does it Matter? [PDF]
, 2010 With an eye on developing a quantum theory of gravity, many physicists have recently searched for quantum challenges to the equivalence principle of general relativity.
Elias Okon +3 more
core +1 more source
Advanced Intelligent Systems, EarlyView.This work presents a magnetic bronchoscopy robot with a novel multi‐segment variable stiffness catheter. This catheter can not only move flexibly in the narrow bronchi but also harden according to the need to provide support. Combined with remote wireless magnetic field drive, it provides a more precise and effective solution for biopsy of deep lung ...
Shucong Yin +10 more
wiley +1 more source
A study of the SYK2 model with twisted boundary conditions
Journal of High Energy PhysicsWe study a version of the 2-body Sachdev-Ye-Kitaev (SYK2) model whose complex fermions exhibit twisted boundary conditions on the thermal circle. As we show, this is physically equivalent to coupling the fermions to a 1-dimensional external gauge field A(
Jeff Murugan +2 more
doaj +1 more source
European Physical Journal C: Particles and Fields, 2017 Applying the anholonomic frame deformation method, we construct various classes of cosmological solutions for effective Einstein–Yang–Mills–Higgs, and two measure theories.
Subhash Rajpoot, Sergiu I. Vacaru
doaj +1 more source
Discreteness Unravels the Black Hole Information Puzzle: Insights from a Quantum Gravity Toy Model. [PDF]
Entropy (Basel), 2023 Perez A, Viollet S.
europepmc +1 more source
Recent Conceptual Consequences of Loop Quantum Gravity. Part I: Foundational Aspects. [PDF]
, 2001 Conceptual consequences of recent results in loop quantum gravity are collected and discussed here in view of their implications for a modern philosophy of science which is mainly understood as one that totalizes scientific insight so as to eventually ...
Zimmermann, Rainer E.
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