Results 61 to 70 of about 1,164 (183)
Relational dynamics and Page-Wootters formalism in group field theory [PDF]
QuantumGroup field theory posits that spacetime is emergent and is hence defined without any background notion of space or time; dynamical questions are formulated in relational terms, in particular using (scalar) matter degrees of freedom as time.
Andrea Calcinari, Steffen Gielen
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Journal of High Energy PhysicsWe study the quantum gravity corrected decoherence of quantum superpositions in the near-extremal Reissner-Nordström black holes. By employing the effective field theory approach, we model the black hole as a quantum system coupled to an external source ...
Ran Li, Zhong-Xiao Man, Jin Wang
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The Space of Connections as the Arena for (Quantum) Gravity
Symmetry, Integrability and Geometry: Methods and Applications, 2011 We review some properties of the space of connections as the natural arena for canonical (quantum) gravity, and compare to the case of the superspace of 3-metrics.
Steffen Gielen
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Propagating spin modes in canonical quantum gravity [PDF]
Physical Review D, 1999 One of the main results in canonical quantum gravity is the introduction of spin network states as a basis on the space of kinematical states. To arrive at the physical state space of the theory though we need to understand the dynamics of the quantum gravitational states. To this aim we study a model in which we allow for the spins, labeling the edges
Borissov, Roumen, Gupta, Sameer
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Quantum-Wave Equation and Heisenberg Inequalities of Covariant Quantum Gravity
Entropy, 2017 Key aspects of the manifestly-covariant theory of quantum gravity (Cremaschini and Tessarotto 2015–2017) are investigated. These refer, first, to the establishment of the four-scalar, manifestly-covariant evolution quantum wave equation, denoted as ...
Claudio Cremaschini, Massimo Tessarotto
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A Multimode Soft Robot Based on a Single Braided Tube
Advanced Intelligent Systems, Volume 8, Issue 2, February 2026.This study introduces a novel soft multimode robot based on a single braided tube directly formed and actuated by SMA wires with distinct initial configurations. By combining contraction, elongation, and bending deformations, the robot achieves straight crawling, turning, inchworm crawling, and rolling without additional actuators.
Zhenhao Jia, Jiayao Ma, Yan Chen
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Mycoponics: Controlled Bioproduction Utilizing Biophysical, Solid‐State, Liquid Nutrient Delivery
Biotechnology Journal, Volume 21, Issue 2, February 2026.Graphical Abstract and Lay Summary Mycoponic biotechnology, inspired by hydroponics—is enabled by antimicrobial ceramics as “substrate,” using a complete mycoponic media for continuous bioproduction of mycelial and mushroom products. Applications include food, mycoleather, and mycopharmaceuticals, representing 18% of the global market.
D. Marshall Porterfield +9 more
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Learning about Quantum Gravity with a Couple of Nodes
Symmetry, Integrability and Geometry: Methods and Applications, 2012 Loop Quantum Gravity provides a natural truncation of the infinite degrees of freedom of gravity, obtained by studying the theory on a given finite graph. We review this procedure and we present the construction of the canonical theory on a simple graph,
Enrique F. Borja +2 more
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Entropic Forces and Newton’s Gravitation
Entropy, 2020 Our subject of interest here is entropic forces, as re-interpreted by Verlinde with reference to gravitation, that is, by appealing to Verlinde’s conception of an entropic (statistically emergent) gravity advanced in [Physica A 2018, 511, 139].
Angelo Plastino, Mario Carlos Rocca
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Recent developments in canonical quantum gravity [PDF]
AIP Conference Proceedings, 1995 We give a summary of the nonperturbative approach to quantum gravity based on Ashtekar’s new variables and loop quantization, intended for a general audience of physicists. We discuss the possible connections of this approach with other areas of physics and the basic ideas of quantizing the gravitational field.
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