Results 1 to 10 of about 10,717 (265)
Extending the velocity-dependent one-scale string evolution model [PDF]
Physical Review D, 2002 We provide a general overview of the velocity-dependent one-scale model for cosmic string evolution and discuss two further extensions to it. We introduce and justify a new ansatz for the momentum parameter $k$, and also incorporate the effect of radiation backreaction.
C J A P Martins, E P S Shellard
exaly +3 more sources
Examples of discriminating the downward depth and downward timing of the velocity string in the water-producing gas well [PDF]
E3S Web of Conferences, 2021 The problem of bottom hole effusion is an important reason for the reduction and even shutdown of natural gas wells. Downward velocity string is an important drainage gas recovery process, which can improve the flow rate of gas and discharge more liquid ...
Yang Jing +5 more
doaj +1 more source
Cosmic string induced peculiar velocities [PDF]
The Astrophysical Journal, 1987 We calculate analytically the probability distribution for peculiar velocities on scales from 10h/sup -1/ to 60h/sup -1/ Mpc with cosmic string loops as the dominant source of primordial gravitational perturbations. We consider a range of parameters .beta.G.mu. appropriate for both hot (HDM) and cold (CDM) dark matter scenarios. An .cap omega.
van Dalen, A., Schramm, D. N.
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BLACK STRING AND VELOCITY FRAME DRAGGING [PDF]
Modern Physics Letters A, 2008 We investigate velocity frame dragging with the boosted Schwarzschild black string solution and the boosted Kaluza–Klein bubble solution, in which a translational symmetry along the boosted z-coordinate is implemented. The velocity frame dragging effect can be nullified by the motion of an observer using the boost symmetry along the z-coordinate if it
Lee, Jungjai, Kim, Hyeong-Chan
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String breaking in a cold wind as seen by string models
Nuclear Physics B, 2022 Using the gauge/string duality, we model a heavy quark-antiquark pair in a color singlet state moving through a cold medium and explore the consequences of temperature and velocity on string breaking. In doing so, we restrict to the case of two dynamical
Oleg Andreev
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Effect of Annular Gas-Liquid Two-Phase Flow on Dynamic Characteristics of Drill String
Shock and Vibration, 2021 Natural gas hydrate (NGH) is a kind of new type green energy source with giant reserves which has been thought of highly by energy explorers in the world.
Baojin Wang +3 more
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String breaking and running coupling of QQ¯ in a rotating media from holography
Physics Letters B, 2023 Through gravity/gauge duality, the string breaking and running coupling constant of heavy quark-antiquark pair are investigated in the rotating background.
Jing Zhou +4 more
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Superradiance and black resonator strings encounter helical black strings
Journal of High Energy Physics, 2023 We construct a cohomogeneity-1 helical black string in six-dimensional Einstein gravity. The helical solution branches from the onset of the gravitational superradiant instability of the equal-spinning Myers-Perry black string.
Óscar J. C. Dias +4 more
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Applied Sciences, 2023 Fluid wave code communication is used in layered water injection intelligent monitoring systems, but a model of fluid transient flow wave signal transmission is still unknown.
Eryang Ming +5 more
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Evolution of semilocal string networks. II. Velocity estimators [PDF]
Physical Review D, 2017 We continue a comprehensive numerical study of semilocal string networks and their cosmological evolution. These can be thought of as hybrid networks comprised of (non-topological) string segments, whose core structure is similar to that of Abelian Higgs vortices, and whose ends have long--range interactions and behaviour similar to that of global ...
Lopez-Eiguren, A. +4 more
openaire +5 more sources