Results 121 to 130 of about 59,677 (306)
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
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Curvature of a regular black hole in Loop quantum gravity model using the RVB method [PDF]
, 2022 Wen-Xiang Chen, Y. G. Zheng
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Phase transition in loop quantum gravity [PDF]
Physical Review D, 2016 We point out that with a specific counting of states loop quantum gravity implies that black holes perform a phase transition at a certain characteristic temperature $T_C$. In this phase transition the punctures of the spin network on the stretched horizon of the black hole jump, in effect, from the vacuum to the excited states.
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Advanced Intelligent Systems, EarlyView.This article describes the integration of compliant bi‐stability in continuum robots. This integration leads to two variants of compliant bistable mechanism (CBM) integrated continuum robot segments, extending and locking. Results show that when used together, these CBM‐integrated segments allow the continuum robot to form custom shapes.
Muhammad Umer Khan Niazi +4 more
wiley +1 more source
Rainbow-Like Black-Hole Metric from Loop Quantum Gravity
Universe, 2018 Hypersurface deformation algebra consists of a fruitful approach to derive deformed solutions of general relativity based on symmetry considerations with quantum-gravity effects, of which the linearization has been recently demonstrated to be connected ...
Iarley P. Lobo, Michele Ronco
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Choice of connection in loop quantum gravity [PDF]
Physical Review D, 2001 We investigate the quantum area operator in the loop approach based on the Lorentz covariant hamiltonian formulation of general relativity. We show that there exists a two-parameter family of Lorentz connections giving rise to Wilson lines which are eigenstates of the area operator. For each connection the area spectrum is evaluated. In particular, the
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A Robotic Urinary Bladder Enabling Volume Monitoring and Assisted Micturition
Advanced Intelligent Systems, EarlyView.An implantable robotic bladder is presented that can store urine in an origami‐designed enclosure. An inductance sensing principle can monitor and transfer the urine volume in real‐time. It can actively expand based on the amount of urine collected from kidneys and apply on‐demand mechanical compression to assist urination.
Izadyar Tamadon +4 more
wiley +1 more source
Advanced Intelligent Systems, EarlyView.Legged robots have advanced in environmental interaction through contact, but most works rely on fixed contact sequences. This work presents a new method based on an indirect optimization method for legged robots to automatically generate contact sequences for complex movements.
Yaowei Chen, Jie Zhang, Ming Lyu
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Quantized Curvature in Loop Quantum Gravity [PDF]
Reports on Mathematical Physics, 2018 arXiv admin note: text overlap with arXiv:1705.06577, arXiv:1706.01011, arXiv:1705 ...
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Advanced Intelligent Systems, EarlyView.A point‐of‐care testing method based on solvent‐responsive magnetic beads suitable for large‐area diagnosis and mutation screening in remote areas was developed to detect it by combining bioluminescenct pyrophosphate in real‐time technology and recombinase‐aid amplification technology.
Zhongjie Fei +8 more
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