Relaxation of Higgs mass and cosmological constant with four-form fluxes and reheating
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2020)045
Abstract: We consider the most general effective action for the four-form fluxes in the Standard Model coupled to gravity. The Higgs mass parameter can be relaxed to a correct value due to the four-form coupling to… read more here.
Keywords: form; relaxation; form fluxes; cosmological constant ... See more keywords
Quadrupole formulae with cosmological constant: comparison
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2025)034
Abstract: We consider three different approaches (by Ashtekar, Bonga and Kesavan; Hoque and Virmani; and Dobkowski-Ryłko and Lewandowski) to investigate gravitational radiation produced by time changing matter source in de Sitter spacetime. All of them lead… read more here.
Keywords: quadrupole formulae; constant comparison; energy; formulae cosmological ... See more keywords
Rational Ruijsenaars-Schneider model with cosmological constant
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2025)110
Abstract: The Ruijsenaars-Schneider models are integrable dynamical realizations of the Poincaré group in 1 + 1 dimensions, which reduce to the Calogero and Sutherland systems in the nonrelativistic limit. In this work, a possibility to construct… read more here.
Keywords: schneider model; ruijsenaars schneider; algebra; rational ruijsenaars ... See more keywords
On AdS4 deformations of celestial symmetries
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2024)010
Abstract: Celestial holography has led to the discovery of new symmetry algebras arising from the study of collinear limits of perturbative gravity amplitudes in flat space. We explain from the twistor perspective how a non-vanishing cosmological… read more here.
Keywords: ads4 deformations; algebra; twistor; cosmological constant ... See more keywords
The cosmological constant and the electroweak scale
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2019)212
Abstract: Abstract String theory has no parameter except the string scale, so a dynamically compactified solution to 4 dimensional spacetime should determine both the Planck scale and the cosmological constant Λ. In the racetrack Kähler uplift… read more here.
Keywords: electroweak scale; scale cosmological; cosmological constant; constant electroweak ... See more keywords
Large D gravity and charged membrane dynamics with nonzero cosmological constant
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep12(2018)034
Abstract: A bstractIn this paper, we have found a class of dynamical charged ‘black-hole’ solutions to Einstein-Maxwell system with a non-zero cosmological constant in a large number of spacetime dimensions. We have solved up to the… read more here.
Keywords: cosmological constant; constant large; large gravity; charged membrane ... See more keywords
The Cosmological Constant From Planckian Fluctuations and the Averaging Procedure
Sign Up to like & getrecommendations! Published in 2019 at "Foundations of Physics"
DOI: 10.1007/s10701-019-00308-5
Abstract: In this paper I continue the investigation in \cite{1,1b} concerning my proposal on the nature of the cosmological constant. In particular, I study both mathematically and physically the quantum Planckian context and I provide, in… read more here.
Keywords: cosmological constant; fluctuations averaging; averaging procedure; constant planckian ... See more keywords
Ricci Flow Approach to the Cosmological Constant Problem
Sign Up to like & getrecommendations! Published in 2019 at "Foundations of Physics"
DOI: 10.1007/s10701-021-00405-4
Abstract: In order to resolve the cosmological constant problem, the notion of reference frame is re-examined at the quantum level. By using a quantum non-linear sigma model (Q-NLSM), a theory of quantum spacetime reference frame is… read more here.
Keywords: ricci flow; cosmological constant; geometry; constant problem ... See more keywords
Non-singular space-times with a negative cosmological constant: II. Static solutions of the Einstein–Maxwell equations
Sign Up to like & getrecommendations! Published in 2017 at "Letters in Mathematical Physics"
DOI: 10.1007/s11005-017-0955-x
Abstract: We construct infinite-dimensional families of non-singular static space-times, solutions of the vacuum Einstein–Maxwell equations with a negative cosmological constant. The families include an infinite-dimensional family of solutions with the usual AdS conformal structure at conformal… read more here.
Keywords: cosmological constant; negative cosmological; einstein maxwell; maxwell equations ... See more keywords
Low redshift constraints on scale-covariant models
Sign Up to like & getrecommendations! Published in 2022 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2022.100964
Abstract: The search for a physical model which explains the observed recent acceleration of the universe is a compelling task of modern fundamental cosmology. Recently Fernandes et al. presented low redshift observational constraints on a scale… read more here.
Keywords: constraints scale; redshift constraints; cosmological constant; low redshift ... See more keywords
On cosmological constant of generalized Robertson-Walker space-times
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mathematical Physics"
DOI: 10.1063/1.4983134
Abstract: We classify (m + n)D warped product spaces (M¯,g¯) satisfying Einstein’s equation G¯=−Λ¯g¯. We show that the warping function f can determine not only the cosmological constant Λ¯ but also the cosmological constant Λ appearing… read more here.
Keywords: cosmological constant; generalized robertson; walker space; robertson walker ... See more keywords