Results 31 to 40 of about 47,904 (244)
A new property of the electromagnetic/Yang–Mills-conformal gravity system in spherical symmetry
Nuclear Physics B, 2019 We find a new property in W2-conformal gravity in spherical symmetry. We demonstrate that the charge of the electromagnetic field varies with respect to the partial scaling symmetry (conformal transformations in subspaces of a spacetime) in the conformal
Hongsheng Zhang
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Quantization of Lorentzian 3D gravity by partial gauge fixing [PDF]
Classical and Quantum Gravity, 2012 D = 2+1 gravity with a cosmological constant has been shown by Bonzom and Livine to present a Barbero-Immirzi like ambiguity depending on a parameter. We make use of this fact to show that, for positive cosmological constant, the Lorentzian theory can be partially gauge fixed and reduced to an SU(2) Chern-Simons theory. We then review the already known
Barbosa, Rodrigo M. S. +3 more
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Frequency Domain Analysis of Partial-Tensor Rotating Accelerometer Gravity Gradiometer
Sensors, 2021 The output model of a rotating accelerometer gravity gradiometer (RAGG) established by the inertial dynamics method cannot reflect the change of signal frequency, and calibration sensitivity and self-gradient compensation effect for the RAGG is a very ...
Xuewu Qian +3 more
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Nonlinear partially massless from massive gravity?
Physical Review D, 2013 We show that consistent nonlinear Partially Massless models cannot be obtained starting from "f-g" massive gravity, with "f" the embedding de Sitter space. The obstruction, which is also the source of f-g acausality, is the very same fifth constraint that removes the notorious sixth ghost excitation.
Deser, S., Sandora, M., Waldron, A.
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Uncovering Transcriptional Responses to Fractional Gravity in Arabidopsis Roots
Life, 2021 Although many reports characterize the transcriptional response of Arabidopsis seedlings to microgravity, few investigate the effect of partial or fractional gravity on gene expression.
James Sheppard +4 more
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International Journal of Mechanical System Dynamics, 2023 This paper aims to examine the influence of gravity on a thermoelastic micro‐elongated layer when a piezoelectric layer is above it, utilizing the theory of Lord–Shulman (L–S) and also the model of dual‐phase‐lag (DPL).
Mohamed I. A. Othman +2 more
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Evidence for and obstructions to nonlinear partially massless gravity
Physical Review D, 2013 Non-linear partially massless (PM) gravity, if it exists, is a theory of massive gravity in which the graviton has four propagating degrees of freedom. In PM gravity, a scalar gauge symmetry removes one of the five modes of the massive graviton. This symmetry ties the value of the cosmological constant to the mass of the graviton, which in turn can be ...
de Rham, Claudia +3 more
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Sub‐Lithospheric Small‐Scale Convection Tomographically Imaged Beneath the Pacific Plate
Geophysical Research Letters, 2022 Small‐scale convection beneath the oceanic plates has been invoked to explain off‐axis nonplume volcanism, departure from simple seafloor depth‐age relationships, and intraplate gravity lineations.
Zachary C. Eilon +4 more
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Frontiers in Plant Science, 2019 Introduction: Traveling to nearby extraterrestrial objects having a reduced gravity level (partial gravity) compared to Earth’s gravity is becoming a realistic objective for space agencies. The use of plants as part of life support systems will require a
Raúl Herranz +8 more
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Partial Weight-Bearing in Female Rats: Proof of Concept in a Martian-Gravity Analog
Frontiers in Physiology, 2020 Many studies have investigated the physiological response to microgravity in both astronauts and animals. However, while space agencies have sought to deploy more women on their missions; animal models rarely include females studies or comparisons ...
Carson Semple +4 more
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