Results 1 to 10 of about 38,455 (311)
High-precision Relativistic Timescales for Cislunar Navigation
The Astrophysical JournalWe present a unified post-Newtonian framework for relativistic timing and coordinate transformations across the Barycentric, Geocentric, and Lunicentric Celestial Reference Systems ( LCRS ) and six timescales: Barycentric Coordinate Time ( TCB ...
Slava G. Turyshev
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Relative Flatness and Generalization
, 2020 Flatness of the loss curve is conjectured to be connected to the generalization ability of machine learning models, in particular neural networks. While it has been empirically observed that flatness measures consistently correlate strongly with generalization, it is still an open theoretical problem why and under which circumstances flatness is ...
Henning Petzka +4 more
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The Relativistic Spin Precession in the Compact Double Neutron Star System PSR J1946+2052
The Astrophysical JournalWe observe systematic profile changes in the visible pulsar of the compact double neutron star system PSR J1946+2052 using observations with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The interpulse of PSR J1946+2052 changed from a
Lingqi Meng +18 more
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General relativity and the cuprates [PDF]
Journal of High Energy Physics, 2013 We add a periodic potential to the simplest gravitational model of a superconductor and compute the optical conductivity. In addition to a superfluid component, we find a normal component that has Drude behavior at low frequency followed by a power law fall-off.
Horowitz, Gary T., Santos, Jorge E.
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Zagadnienia Filozoficzne w Nauce, 2018 Black holes entered scientific literature as early as at the end of eighteenth century. They had been known at that time as dark stars, but their concept did not find its way to physics or astronomy, and had been abandoned for more than one hundred years.
Edward Malec
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On Conformally Coupled General Relativity
EPJ Web of Conferences, 2018 A gravity model based on the conformal symmetry is presented. To specify the structure of the general coordinate transformations the Ogievetsky theorem is applied. The nonlinear symmetry realization approach is used.
Arbuzov Andrej, Latosh Boris
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A Novel Logarithmic Approach to General Relativistic Hydrodynamics in Dynamical Spacetimes
UniverseWe introduce a novel logarithmic approach within the Baumgarte–Shapiro–Shibata–Nakamura (BSSN) formalism for self-consistently solving the equations of general relativistic hydrodynamics (GRHD) in evolving curved spacetimes. This method employs a “3 + 1”
Mario Imbrogno +3 more
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Clocks, events, and the ontology of perceiving and acting
Frontiers in PsychologyJames Gibson introduced the concept of ecological physics. Gibson asserted that contemporary physics, such as general relativity, was not relevant to perceiving and acting.
Thomas A. Stoffregen, Robert Heath
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Testing general relativity on accelerators
Physics Letters B, 2015 Within the general theory of relativity, the curvature of spacetime is related to the energy and momentum of the present matter and radiation. One of the more specific predictions of general relativity is the deflection of light and particle trajectories
Tigran Kalaydzhyan
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General relativity: An erfc metric
Results in Physics, 2018 This paper proposes an erfc potential to incorporate in a symmetric metric. One key feature of this model is that it relies on the existence of an intrinsic physical constant σ, a star-specific proper length that scales all its surroundings.
Réjean Plamondon
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