Results 21 to 30 of about 47,904 (244)
Solving 2-D gravity inversion problems using a PDE model in geophysics exploration [PDF]
International Journal of Mining and Geo-Engineering, 2022 Inverse modeling is one of the useful solutions to create a logical model with relationships between observed and measured values. In geophysical and subsurface investigations such as cavities or mineral explorations, solving inverse problems using ...
Ali Pasyar +2 more
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Looking for partially-massless gravity [PDF]
Journal of High Energy Physics, 2019 AbstractWe study the possibility for a unitary theory of partially-massless (PM) spin-two field interacting with Gravity in arbitrary dimensions. We show that the gauge and parity invariant interaction of PM spin two particles requires the inclusion of specific massive spin-two fields and leads to a reconstruction of Conformal Gravity, or multiple ...
Joung E., Mkrtchyan K., Poghosyan G.
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Partially massless theory as a quantum gravity candidate [PDF]
International Journal of Modern Physics A, 2021 We study partially massless gravity theory (PM gravity theory) and suggest an alternative way to add higher order interaction vertices to the theory. Rather than introducing self-interaction vertices of the gravitational fields to the partially massless gravity action, we consider interactions with matter fields, since it is well known that addition ...
Lunchakorn Tannukij, Jae-Hyuk Oh
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Massive gravity on de Sitter and unique candidate for partially massless gravity [PDF]
Journal of Cosmology and Astroparticle Physics, 2013 30 pages. Some clarifications and references added. New subsection 'Symmetry and Counting in the Full Theory' added. New appendix 'St\"uckelberg fields in the Na\"ive approach' added.
de Rham, Claudia +1 more
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Mathematics, 2023 The gravity force of a gravity field generated by a non-rotating level ellipsoid of revolution enclosing mass M is given as a solution of a partial differential equation along with a boundary condition of Dirichlet type. The partial differential equation
Gerassimos Manoussakis
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Frontiers in Astronomy and Space Sciences, 2021 Plants are a necessary component of any system of bioregenerative life-support for human space exploration. For this purpose, plants must be capable of surviving and adapting to gravity levels different from the Earth gravity, namely microgravity, as it ...
F. Javier Medina +4 more
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Life, 2014 The ability to maintain the body relative to the external environment is important for adaptation to altered gravity. However, the physiological limits for adaptation or the disruption of body orientation are not known.
Katsuya Hasegawa +3 more
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A Moderate Daily Dose of Resveratrol Mitigates Muscle Deconditioning in a Martian Gravity Analog
Frontiers in Physiology, 2019 While there is a relatively good understanding of the effects of microgravity on human physiology based on five decades of experience, the physiological consequences of partial gravity remain far less well understood.
Marie Mortreux +3 more
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Massless and partially massless limits in Quadratic Gravity
Journal of High Energy Physics, 2023 Abstract In the context of perturbative quantum field theory, the addition of quadratic-curvature invariants to the Einstein-Hilbert action makes it possible to achieve strict renormalizability in four dimensions. The additional terms R2 and CμνρσCμνρσ are multiplied by dimensionless coefficients that are related to the masses of ...
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Higher Derivative Gravity and Conformal Gravity from Bimetric and Partially Massless Bimetric Theory [PDF]
Universe, 2015 In this paper, we establish the correspondence between ghost-free bimetric theory and a class of higher derivative gravity actions, including conformal gravity and new massive gravity. We also characterize the relation between the respective equations of motion and classical solutions.
Hassan, S.Fawad +2 more
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