Results 31 to 40 of about 295,670 (287)
Resolution of Cosmological Singularity in Hořava–Lifshitz Cosmology
Universe, 2023 The standard ΛCDM model, despite its agreement with observational data, still has some issues unaddressed, such as the problem of initial singularity. Solving that problem usually requires modifications of general relativity.
Ewa Czuchry
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Rekayasa Mesin, 2019 PRoM-120 was a parallel robotic manipulator which constructed by 2-PRU/PRS kinematic chains. The mobility of this manipulator was 3 DOF, i.e. 1 translational DOF, and 2 rotational DOF (1T2R).
Adriyan Adriyan, Sufiyanto Sufiyanto
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Interior structure and complexity growth rate of holographic superconductor from M-theory
Journal of High Energy Physics, 2022 We study the interior dynamics of a top-down holographic superconductor from M-theory. The condense of the charged scalar hair necessarily removes the inner Cauchy horizon and the spacetime ends at a spacelike singularity.
Yu-Sen An +3 more
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The generic sudden singularity in Brans–Dicke theory
European Physical Journal C: Particles and Fields, 2020 We construct a formal asymptotic series expansion for a general solution of the Brans–Dicke equations with a fluid source near a sudden singularity. This solution contains 11 independent arbitrary functions of the spatial coordinates as required by the ...
John D. Barrow +2 more
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The Witten equation, mirror symmetry and quantum singularity theory
, 2012 For any non-degenerate, quasi-homogeneous hypersurface singularity, we describe a family of moduli spaces, a virtual cycle, and a corresponding cohomological field theory associated to the singularity. This theory is analogous to Gromov-Witten theory and
Fan, Huijun +2 more
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D-branes and the Conifold Singularity [PDF]
, 1996 We analyze in detail the description of type IIB theory on a Calabi-Yau three-fold near a conifold singularity in terms of intersecting D-branes. In particular we study the singularity structure of higher derivative $F$-terms of the form $F_g W^{2g ...
Antoniadis +13 more
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Cosmology from Newton–Chern–Simons gravity
Nuclear Physics B, 2020 We study a five-dimensional non-relativistic gravity theory whose action is composed of a gravitational sector and a sector of matter where the gravitational sector is given by the so called Newton–Chern–Simons gravity and where the matter sector is ...
S. Lepe, G. Rubio, P. Salgado
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Naked Singularity in a Modified Gravity Theory [PDF]
, 2009 The cosmological constant induced by quantum fluctuation of the graviton on a given background is considered as a tool for building a spectrum of different geometries.
Abdalla M C B +25 more
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Singularity property and singularity-free path planning of the Gough–Stewart parallel mechanism
International Journal of Advanced Robotic Systems, 2017 Singularity affects the performance of the parallel mechanisms seriously and so should be avoided as the mechanisms work. It is necessary to obtain the distribution of the singularity locus in the task space of a parallel mechanism and then further ...
Baokun Li +5 more
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Singularity Theorems in the Effective Field Theory for Quantum Gravity at Second Order in Curvature
Universe, 2020 In this paper, we discuss singularity theorems in quantum gravity using effective field theory methods. To second order in curvature, the effective field theory contains two new degrees of freedom which have important implications for the derivation of ...
Folkert Kuipers, Xavier Calmet
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