Results 21 to 30 of about 559,341 (295)
Construction of inflationary scenarios with the Gauss–Bonnet term and nonminimal coupling
European Physical Journal C: Particles and Fields, 2021 Inflationary models with a scalar field nonminimally coupled both with the Ricci scalar and with the Gauss–Bonnet term are studied. We propose the way of generalization of inflationary scenarios with the Gauss–Bonnet term and a scalar field minimally ...
Ekaterina O. Pozdeeva, Sergey Yu. Vernov
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The Einstein-Vlasov system with a scalar field [PDF]
, 2004 We study the Einstein-Vlasov system coupled to a nonlinear scalar field with a nonnegative potential in locally spatially homogeneous spacetime, as an expanding cosmological model. It is shown that solutions of this system exist globally in time.
Lee, Hayoung
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Potential--density pairs for spherical galaxies and bulges: the influence of scalar fields [PDF]
, 2004 A family of potential--density pairs has been found for spherical halos and bulges of galaxies in the Newtonian limit of scalar--tensor theories of gravity.
Aguirre +34 more
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Generalized Gaussian Effective Potential: Low Dimensional Scalar Fields [PDF]
, 1994 We study a generalization of the Gaussian effective potential for self-interacting scalar fields in one and two spatial dimensions. We compute the two-loop corrections and discuss the renormalization of the generalized Gaussian effective potential ...
Cea, P., Tedesco, L.
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Endlessly flat scalar potentials and α -attractors
Physics Letters B, 2016 We consider a minimally-coupled inflationary theory with a general scalar potential $V(f( ))= V( \sum_{k=1}^{n} _k ^k)$ containing a stationary point of maximal order $m$. We show that asymptotically flat potentials can be associated to stationary points of infinite order and discuss the relation of our approach to the theory of $ $-attractors.
Artymowski, Michał, Rubio, Javier
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A note on membrane interactions and the scalar potential
Journal of High Energy Physics, 2020 We compute the tree-level potential between two parallel p-branes due to the exchange of scalars, gravitons and (p+1)-forms. In the case of BPS membranes in 4d N $$ \mathcal{N} $$ = 1 supergravity, this provides an interesting reinterpretation of the ...
Alvaro Herraez
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Effect of Medium on Fundamental Interactions in Gravity and Condensed Matter
Frontiers in Physics, 2022 Recently, it was shown that the gravitational field undergoes exponential cutoff at large cosmological scales due to the presence of background matter. In this article, we demonstrate that there is a close mathematical analogy between this effect and the
Alexander Zhuk +4 more
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On the Neutral Scalar Sector of the General R-parity Violating MSSM [PDF]
, 2005 Starting out from the most general, gauge invariant and renormalizable scalar potential of the R-parity violating MSSM and performing a calculable rotation to the scalar fields we arrive at a basis where the sneutrino VEVs are zero.
A. Dedes +44 more
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Scalar hairy black holes and solitons in asymptotically flat spacetimes [PDF]
, 2003 A numerical analysis shows that a class of scalar-tensor theories of gravity with a scalar field minimally and nonminimally coupled to the curvature allows static and spherically symmetric black hole solutions with scalar-field hair in asymptotically ...
A. Ashtekar +47 more
core +2 more sources
Scalar cosmology with multi-exponential potentials [PDF]
Classical and Quantum Gravity, 2005 We investigate cosmologies with an arbitrary number of scalars and the most general multi-exponential potential. By formulating the equations of motion in terms of autonomous systems we complete the classification of power-law and de Sitter solutions as critical points, e.g. attractor and repeller solutions, in terms of the scalar couplings.
Collinucci, Andres +2 more
openaire +3 more sources