Results 21 to 30 of about 12,773,809 (282)
Composite higher derivative theory of gravity
Physical Review Research, 2020 We investigate a higher derivative theory that belongs to the class of composite field theories. Starting from the Yang-Mills theory based on the Lorentz group, we express the gauge vector fields in terms of the tetrad decomposition of a space-time ...
Hans Christian Öttinger
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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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Radiation and reaction in scalar quantum electrodynamics [PDF]
, 2010 This thesis is a report of work which develops the study of electromagnetic radiation by accelerating charges in the scalar quantum electrodynamic theory.
Walker, Philip
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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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Quantum Gravity: Motivations and Alternatives [PDF]
, 2009 The mutual conceptual incompatibility between General Relativity and Quantum Mechanics / Quantum Field Theory is generally seen as the most essential motivation for the development of a theory of Quantum Gravity.
Hedrich, Reiner
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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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, 2019 Classical field theory predicts how physical fields interact with matter, and is a logical precursor to quantum field theory. This introduction focuses purely on modern classical field theory, helping graduates and researchers build an understanding of ...
Năstase, Horaƫiu [UNESP] +1 more
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