Results 111 to 120 of about 166,028,825 (289)
Testing Modified Gravity with the Sunyaev Zel'dovich Effect [PDF]
, 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
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Halide Perovskite: A Rich Source of Thermal Insulator
Advanced Science, EarlyView.Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye +3 more
wiley +1 more source
Geometrizing gravity and vice-versa: the force of a formulation [PDF]
, 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
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Modified gravity theories from the Barrow hypothesis [PDF]
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
Modified teleparallel theories of gravity: Gauss-Bonnet and trace extensions [PDF]
, 2016 We investigate modified theories of gravity in the context of teleparallel geometries with possible Gauss-Bonnet contributions. The possible coupling of gravity with the trace of the energymomentum tensor is also taken into account.
Christian G. Böhmer +3 more
core +2 more sources
Gravitational Microlensing in Modified Gravity Theories [PDF]
Progress of Theoretical Physics, 2011 8 pages, 2 figures, accepted by Progress of Theoretical Physics (PTP)
openaire +2 more sources
Advanced Science, EarlyView.Bamboo‐like nitrogen‐doped carbon fibers (BNCFs) were synthesized via a vapor‐liquid‐solid catalytic growth method and further integrated with polyaniline to fabricate a freestanding BNCFs/S/PANI cathode. The PANI coating and BNCFs framework synergistically establish an interconnected conductive network with abundant nitrogen‐active sites, thereby ...
Jie Yang +5 more
wiley +1 more source
SPACETIME OR QUANTUM PARTICLES: THE ONTOLOGY OF QUANTUM GRAVITY? [PDF]
, 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]
Proceedings 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
Advanced Science, EarlyView.Schematic representation of ultrasound‐mediated ICG/siCD24@MSN‐LCD from nanostructure to synergistic sono‐gene therapy. This nanoplatform targets ASGPR via the LCD shell, which dissociates to release loaded ICG and siCD24. The core mechanism involves ultrasound‐guided sonodynamic therapy by ICG and CD24 knockdown by siCD24, both activating the p53 axis
Yading Zhao +11 more
wiley +1 more source