Results 71 to 80 of about 275,111 (343)
Dynamical scalarization in Einstein-Maxwell-dilaton theory [PDF]
Physical Review D, 2021 We study the process of fully nonlinear dynamical scalarization starting from a charged black hole or a naked singularity in asymptotically flat spacetime in the Einstein-Maxwell-dilaton theory.
Cheng-Yong Zhang +4 more
semanticscholar +1 more source
Generic scalar potentials in geometric scalar gravity [PDF]
Journal of Theoretical and Applied Physics, 2016 We discuss a generic form of the scalar potential appearing in the geometric scalar theory of gravity. We find the conditions on the potential by considering weak and strong gravity. The modified black hole solutions are obtained for generic potentials and the inverse problems on a black hole and on a spherical body (`pseudo-gravastar') are ...
Nahomi Kan, Kiyoshi Shiraishi
openaire +2 more sources
Viable constraint on scalar field in scalar–tensor theory [PDF]
Classical and Quantum Gravity, 2020 Abstract The scalar–tensor theory can be formulated in both Jordan and Einstein frames, which are conformally related together with a redefinition of the scalar field. As the solution to the equation of the scalar field in the Jordan frame does not have the one-to-one correspondence with that in the Einstein frame,
Chao-Qiang Geng +2 more
openaire +2 more sources
Robust optimization model for uncertain multiobjective linear programs
Journal of Inequalities and Applications, 2018 In this paper, we consider the multiobjective linear programs where coefficients in the objective function belong to uncertainty sets. We introduce the concept of robust efficient solutions to uncertain multiobjective linear programming problems.
Lei Wang, Min Fang
doaj +1 more source
ABSENCE OF SCALAR HAIR IN SCALAR-TENSOR GRAVITY [PDF]
The Thirteenth Marcel Grossmann Meeting, 2015 3 pages, latex, prepared for the proceedings of the 13th Marcel Grossman Meeting, Stockholm ...
Faraoni, Valerio, Sotiriou, Thomas P.
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Scalar-scalar, scalar-tensor, and tensor-tensor correlators from anisotropic inflation [PDF]
Physical Review D, 2010 We compute the phenomenological signatures of a model (Watanabe et al' 09) of anisotropic inflation driven by a scalar and a vector field. The action for the vector is U(1) invariant, and the model is free of ghost instabilities. A suitable coupling of the scalar to the kinetic term of the vector allows for a slow roll evolution of the vector vev, and ...
Gumrukcuoglu A. E. +2 more
openaire +3 more sources
Scalarization and robustness in uncertain vector optimization problems: a non componentwise approach
Journal of Global Optimization, 2022 The robust optimization approach can be used to tackle uncertain vector problems by considering worst case scenarios. In this context, notions of robust efficient solutions which are coherent with a set-valued minimization process have been introduced in
E. Caprari +2 more
semanticscholar +1 more source
Black hole scalarization induced by the spin: 2+1 time evolution [PDF]
Physical Review D, 2020 The scalarization is a very interesting phenomena allowing to endow a compact object with scalar hair while leaving all the predictions in the weak field limit unaltered.
D. Doneva +3 more
semanticscholar +1 more source
Applied Sciences, 2018 Using Pareto optimization in Multi-Objective Reinforcement Learning (MORL) leads to better learning results for network defense games. This is particularly useful for network security agents, who must often balance several goals when choosing what action
Yang Sun +5 more
doaj +1 more source
Shape dependence of spontaneous scalarization [PDF]
, 2019 International audienceSpontaneous scalarization is an interesting mechanism for modification of gravity by nonminimal coupling of a scalar field to matter or curvature invariants in the context of scalar-tensor theories, and its onset is signaled by ...
Mukohyama, Shinji, Motohashi, Hayato
core +1 more source