Results 31 to 40 of about 1,876 (240)
On the propagation across the big bounce in an open quantum FLRW cosmology
European Physical Journal C: Particles and Fields, 2022 The propagation of a scalar field in an open FLRW bounce-type quantum spacetime is examined, which arises within the framework of the IKKT matrix theory.
Emmanuele Battista, Harold C. Steinacker
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The Flyby Anomaly in an Extended Whitehead’s Theory
Galaxies, 2015 In this paper, we consider an extended version of Whitehead’s theory of gravity in connection with the flyby anomaly. Whitehead’s theory is a linear approximation defined in a background Minkowski spacetime, which gives the same solutions as standard ...
Luis Acedo
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This record contains three papers that together establish the axiomatic foundation of Potential-Field Theory (Shichanglun / Zhendonglun), a complete dynamical framework that derives all classical gravitational phenomena from a single first principle: the modulation of frequency by the potential field. ——————————————————Paper 1: "Potential-Field Theory:
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Cosmological bounce in Horndeski theory and beyond
EPJ Web of Conferences, 2018 We discuss the stability of the classical bouncing solutions in the general Horndeski theory and beyond Horndeski theory. We restate the no-go theorem, showing that in the general Horndeski theory there are no spatially flat non-singular cosmological ...
Kolevatov R. +4 more
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Quantum corrections to Schwarzschild black hole
European Physical Journal C: Particles and Fields, 2017 Using effective field theory techniques, we compute quantum corrections to spherically symmetric solutions of Einstein’s gravity and focus in particular on the Schwarzschild black hole.
Xavier Calmet, Basem Kamal El-Menoufi
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JOURNAL OF ADVANCES IN PHYSICS, 2021 Expansion of the universe is a divine fact in the glorious Quran. The accelerated expansion of the universe is one of the physics mysteries and challenges. This article is a try to find an answer to this ambiguity. A simple fusion and merging of the Newton, Einstein and quantum field equations were carried out to clarify this topic.
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Tree-level scattering amplitudes in nonlocal field theories
Journal of High Energy Physics, 2021 We prove in two ways that, for a special class of nonlocal field theories consistent with linear and non-linear stability at the classical level, and with unitarity and super-renormalizability or finiteness at the quantum level, the n-point tree-level ...
Leonardo Modesto, Gianluca Calcagni
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A Field-Theoretic Gravitodynamic Framework Consistent with General Relativity
Reports in Advances of Physical SciencesWe present a covariant field-theoretical model of gravitation based on a structural analogy with classical electrodynamics. The theory employs a four-potential formulation and introduces dynamic gravitational fields, including a gravitomagnetic component
Borros Arneth
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All things retarded: radiation-reaction in worldline quantum field theory
Journal of High Energy Physics, 2022 We exhibit an initial-value formulation of the worldline quantum field theory (WQFT) approach to the classical two-body problem in general relativity.
Gustav Uhre Jakobsen +3 more
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Gravitational Dynamics—A Novel Shift in the Hamiltonian Paradigm
Universe, 2021 It is well known that Einstein’s equations assume a simple polynomial form in the Hamiltonian framework based on a Yang-Mills phase space. We re-examine the gravitational dynamics in this framework and show that time evolution of the gravitational field ...
Abhay Ashtekar, Madhavan Varadarajan
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