Results 41 to 50 of about 141,581 (359)
STABILITY OF STELLAR SYSTEMS ORBITING SGR A*
Odessa Astronomical Publications, 2016 Path equations of different orbiting objects in the presence of very strong gravitational fields are essential to examine the impact of its gravitational effect on the stability of each system.
Magd E. Kahil
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Post-Minkowskian Hamiltonians in general relativity [PDF]
Physical Review D, 2019 We describe the computation of post-Minkowskian Hamiltonians in General Relativity from scattering amplitudes. Using a relativistic Lippmann-Schwinger equation, we relate perturbative amplitudes of massive scalars coupled to gravity to the post ...
A. Cristofoli +3 more
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RELATIVITY GROUPOID INSTEAD OF RELATIVITY GROUP [PDF]
International Journal of Geometric Methods in Modern Physics, 2007 In 1908, Minkowski [13] used space-like binary velocity-field of a medium, relative to an observer. In 1974, Hestenes introduced, within a Clifford algebra, an axiomatic binary relative velocity as a Minkowski bivector [7, 8]. We propose to consider binary relative velocity as a traceless nilpotent endomorphism in an operator algebra. Any concept of a
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Konštruktivizmus, realizmus a obrat k jazyku
Filosofický časopis, 2021 This paper focuses primarily on the realism-constructivism debate. Firstly, I clarify Goodman’s three main arguments for constructivism, and then I deal with the critical response to this doctrine by proponents of Devittian common-sense realism and ...
Mikušiak, Marek
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Republication of: The dynamics of general relativity [PDF]
, 2004 This article—summarizing the authors’ then novel formulation of General Relativity—appeared as Chap. 7, pp. 227–264, in Gravitation: an introduction to current research, L. Witten, ed. (Wiley, New York, 1962), now long out of print.
R. Arnowitt, S. Deser, C. Misner
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ξRϕ2 coupling, cosmological constant and quantum gravitational corrections to Newton’s potential
Physics Letters BThis letter investigates the contribution of the −gξRϕ2 non-minimal interaction to the long range gravitational potential for massive scalar fields, found from the non-relativistic limit of the 2-2 scattering amplitude with graviton exchanges.
Avijit Sen Majumder, Sourav Bhattacharya
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Black coffee. Marcel Duchamp’s pataphysical sensism
Relief: Revue Électronique de Littérature Francaise, 2016 Duchamp’s readymade is usually interpreted as a bold and cerebral emancipation of modern art from the material, the craft and natural beauty, and the discovery of the continent of conceptual art.
Dirk van Weelden
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Interstellar travel guide: Chronicles of a violent universe
Mètode Science Studies Journal: Annual Review, 2017 In contrast to observations from our local viewpoint, the universe is extremely violent. Explosions of massive stars, X-ray and gamma-ray binary stars, and active galaxies are related to the presence of compact objects such as neutron stars or black ...
Manel Perucho, José A. Font
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Remarks on the Theory of Relativity (1922)
Journal of French and Francophone Philosophy, 2020 On April 22, 1922, the Societé française de Philosophie hosted Albert Einstein for a discussion of the theory of relativity. In the course of this discussion, Henri Bergson, who was at that time writing Duration and Simultaneity, which explored some of ...
Henri Bergson, Heath Massey
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar +8 more
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