Results 11 to 20 of about 467,438 (306)
Interaction Between Macroscopic Quantum Systems and Gravity
We review experiments and theoretical models about the possible mutual interplay between the gravitational field and materials in the superconducting state or other macroscopic quantum states.
A. Gallerati +3 more
doaj +1 more source
Gravitation waves from QCD and electroweak phase transitions [PDF]
We investigate the gravitation waves produced from QCD and electroweak phase transitions in the early universe by using a 5-dimension holographic QCD model and a holographic technicolor model.
Yidian Chen, Mei Huang, Q. Yan
semanticscholar +1 more source
Aligned electric and magnetic Weyl fields [PDF]
We analyze the spacetimes admitting a direction for which the relative electric and magnetic Weyl fields are aligned. We give an invariant characterization of these metrics and study the properties of its Debever null vectors.
Joan Josep Ferr, Juan Antonio Sáez
core +2 more sources
Parcours, pratique théorique et documents scientifiques « privés » du physicien Jacques Solomon
Jacques Solomon (1908-1942) is an important figure in the theoretical physics of the 1930s in France. His published works and the personal documents that have been entrusted to me, reveal specific writing processes and theoretical elaborations, which his
Bustamante De La Ossa, Martha-Cecilia
doaj +1 more source
On the invisibility and impact of Robert Hooke’s theory of gravitation
Robert Hooke’s theory of gravitation is a promising case study for probing the fruitfulness of Menachem Fisch’s insistence on the centrality of trading zone mediators for rational change in the history of science and mathematics.
Guicciardini Niccolò
doaj +1 more source
The cause of axial rotation of the scoliotic spine [PDF]
To explain the cause of axial rotation in a scoliotic vertebral column, the influence of the gravitation force on a spine with a C-scoliosis has been investigated by means of a mechanical model. In this model the gravitation force takes hold of the three-
Cool, J.C. +3 more
core +2 more sources
Gravitation-based personalized recommendation algorithm
A recommendation algorithm is proposed by introducing the universal law of gravitation into a recommendation system. This new algorithm is named as the gravitation-based personalized recommendation (GBPR) algorithm.
WANG Guo-xia, LIU He-ping, LI Qing
doaj +1 more source
Probing Yukawian gravitational potential by numerical simulations. I. Changing N-body codes [PDF]
In the weak field limit general relativity reduces, as is well known, to the Newtonian gravitation. Alternative theories of gravity, however, do not necessarily reduce to Newtonian gravitation; some of them, for example, reduce to Yukawa-like potentials ...
A. Toomre +16 more
core +1 more source
Predictions and Outcomes for the Dynamics of Rotating Galaxies
A review is given of a priori predictions made for the dynamics of rotating galaxies. One theory—MOND—has had many predictions corroborated by subsequent observations.
Stacy McGaugh
doaj +1 more source
Some applications of the Shapiro time delay [PDF]
Listening to echoes has long been a way to estimate distances, a technique whose backbone is the time delay. The gravitational field also creates a time delay, called Shapiro time delay, that helps us extract some information from the field and ...
Ghasemi Azar A., Rezaei H., Moradpour H.
doaj +1 more source

