Results 111 to 120 of about 167,529,233 (288)

Testing Modified Gravity with the Sunyaev Zel'dovich Effect [PDF]

open access: yes, 2022
): In this thesis, we present a method to test modified-gravity models. Growth of large-scale structures is directly related to the governing gravity theory.
Upadhyay, Vikram
core  

Dual‐Mode Gripper With Suction and Shape‐Adaptive Freezing Grasps

open access: yesAdvanced Robotics Research, EarlyView.
This study presents a dual‐mode robotic gripper that combines vacuum suction with a shape‐adaptive freezing grasp. The freezing mode uses a compliant rubber membrane, a sprayed water layer, and dry‐ice powder to generate ice‐mediated adhesion while conforming to complex geometries.
Takuma Yanagisawa   +4 more
wiley   +1 more source

Geometrizing gravity and vice-versa: the force of a formulation [PDF]

open access: yes, 2009
It is well-known that Newton’s theory of gravity, commonly held to describe a gravitational force, can be recast in a geometrical form: Newton- Cartan theory.
Knox, Eleanor
core  

Modified gravity theories from the Barrow hypothesis [PDF]

open access: yes
Barrow proposed that quantum gravity effects might introduce fractal corrections to the area of the event horizon of black holes. The area law gets modified as $S \propto A^{1+\Delta /2}$ , with $0\,\leq \Delta \leq1$ . It was so far unclear whether this
Ruben Campos Delgado   +3 more
core   +1 more source

Gravitational Microlensing in Modified Gravity Theories [PDF]

open access: yesProgress of Theoretical Physics, 2011
8 pages, 2 figures, accepted by Progress of Theoretical Physics (PTP)
openaire   +2 more sources

Toward Mechanical Intelligence in Robotics

open access: yesAdvanced Robotics Research, EarlyView.
Robots can use their physical bodies to perform functions usually assigned to electronic sensors and controllers. This perspective defines mechanical intelligence through three core operations: filtering inputs, routing mechanical signals, and switching between states.
Xinyi Yang   +5 more
wiley   +1 more source

SPACETIME OR QUANTUM PARTICLES: THE ONTOLOGY OF QUANTUM GRAVITY? [PDF]

open access: yes, 1996
The domains of quantum theory and general relativity overlap in situations where quantum mechanical effects cannot be ignored. In order to deal with this overlap of theoretical domains, there has been a tendency to apply the rules of quantum field theory
Peter J. Riggs   +2 more
core   +1 more source

Theoretical constraints on modified theories of gravity [PDF]

open access: yesProceedings of The 3rd International Symposium on “Quest for the Origin of Particles and the Universe" — PoS(KMI2017), 2017
We discuss about the theoretical constraints on modified theories of gravity. To explain the dark component of the Universe, many modified theories of gravity have been proposed. Meanwhile, to quantize the gravitational theory, we would need a new theory of gravity in UV physics.
openaire   +1 more source

Ethical Precision in Nanoscale Brain Interfacing

open access: yesAdvanced Science, EarlyView.
As brain interfaces approach the nanoscale, precision no longer only measures—it knows, predicts, and potentially reshapes the mind. This work argues that traditional ethics fails under such conditions and proposes a shift toward continuous, operation‐based governance using the recovery–discovery framework to track, constrain, and responsibly steer ...
Guilherme Wood
wiley   +1 more source

Presentism and Quantum Gravity [PDF]

open access: yes, 2001
There is a philosophical tradition of arguing against presentism, the thesis that only presently existing things exist, on the basis of its incompatibility with fundamental physics.
Monton, Bradley
core  

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