Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimension
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2019)118
Abstract: Abstract We extend a recent classification of three-dimensional spatially isotropic homogeneous spacetimes to Chern-Simons theories as three-dimensional gravity theories on these spacetimes. By this we find gravitational theories for all carrollian, galilean, and aristotelian counterparts… read more here.
Keywords: limits three; dimensional gravity; three dimensional; gravity metric ... See more keywords
A study of mechanical extending limits for three-section directional wells
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Natural Gas Science and Engineering"
DOI: 10.1016/j.jngse.2018.03.031
Abstract: Abstract With the increase of vertical and lateral extensions of directional wells in recent decades, extending limits of rotary drilling have attracted much attention. In this paper, mechanical extending limits in directional drilling, which mean… read more here.
Keywords: limits three; extending limits; drilling; directional wells ... See more keywords