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A complete model of cosmological evolution of a classical scalar field with the Higgs potential is studied and simulated on a computer without assumption that the Hubble constant is nonnegative. The corresponding dynamical system is…

综合物理 · 物理学 2021-08-18 Yu. G. Ignat'ev , A. R. Samigullina

Shell models are simplified models of hydrodynamic turbulence, retaining only some essential features of the original equations, such as the non-linearity, symmetries and quadratic invariants. Yet, they were shown to reproduce the most…

流体动力学 · 物理学 2023-11-29 Côme Fontaine , Malo Tarpin , Freddy Bouchet , Léonie Canet

We study multidimensional gravitational models with scalar curvature nonlinearity of the type 1/R and with form-fields (fluxes) as a matter source. It is assumed that the higher dimensional space-time undergoes Freund-Rubin-like spontaneous…

高能物理 - 理论 · 物理学 2008-11-26 Tamerlan Saidov , Alexander Zhuk

We consider renormalization group flows between conformal field theories in five (six) dimensions with a string (M-theory) dual. By compactifying on a circle (torus) with appropriate boundary conditions, we obtain continuous families of…

高能物理 - 理论 · 物理学 2016-08-08 Daniel Elander , Anton F. Faedo , Carlos Hoyos , David Mateos , Maurizio Piai

A study and numerical modeling of the cosmological evolution of a classical scalar field with the Higgs potential was carried out. Based on the formulated similarity properties of cosmological models, their main characteristics are studied…

广义相对论与量子宇宙学 · 物理学 2023-12-12 Yu. G. Ignat'ev , A. R. Samigullina

We discuss the renormalisation group flow of all essential couplings of quantum gravity coupled to a shift-symmetric scalar field at fourth order in the derivative expansion. We derive the global structure of the phase diagram, and identify…

高能物理 - 理论 · 物理学 2023-10-20 Benjamin Knorr

We study how the constants $G$ and $\Lambda$ may vary in different theoretical models (general relativity with a perfect fluid, scalar cosmological models (\textquotedblleft quintessence\textquotedblright) with and without interacting…

广义相对论与量子宇宙学 · 物理学 2012-04-06 José Antonio Belinchón

Corrections are computed to the classical static isotropic solution of general relativity, arising from non-perturbative quantum gravity effects. A slow rise of the effective gravitational coupling with distance is shown to involve a…

高能物理 - 理论 · 物理学 2008-11-26 Herbert W. Hamber , Ruth M. Williams

We continue the study of the renormalization group and decoupling of massive fields in curved space, started in the previous article and analyse the higher derivative sector of the vacuum metric-dependent action of the Standard Model. The…

高能物理 - 唯象学 · 物理学 2009-11-10 Eduard V. Gorbar , Ilya L. Shapiro

In a companion paper arXiv:2510.27676, we introduced a non-perturbative classical renormalisation group (RG) flow equation as a novel method for treating strongly interacting problems in general relativity, with a prominent application to…

广义相对论与量子宇宙学 · 物理学 2026-05-22 F. Gutiérrez , K. Falls , A. Codello

We study the UV behaviour of actions including integer powers of scalar curvature and even powers of scalar fields with Functional Renormalization Group techniques. We find UV fixed points where the gravitational couplings have non-trivial…

高能物理 - 理论 · 物理学 2010-04-29 Gaurav Narain , Christoph Rahmede

We study the universal critical behaviour near weakly first-order phase transitions for a three-dimensional model of two coupled scalar fields -- the cubic anisotropy model. Renormalization-group techniques are employed within the formalism…

高能物理 - 理论 · 物理学 2009-10-30 N. Tetradis

Holographic renormalization group flows can be interpreted in terms of effective field theory. Based on such an interpretation, a formula for the running scaling dimensions of gauge-invariant operators along such flows is proposed. The…

高能物理 - 理论 · 物理学 2011-02-23 Wolfgang Mueck

We consider the holographic dual of a general class of N=1* flows in which all three chiral multiplets have independent masses, and in which the corresponding Yang-Mills scalars can develop particular supersymmetry-preserving vevs. We also…

高能物理 - 理论 · 物理学 2010-12-03 Alexei Khavaev , Nicholas P. Warner

We study four-dimensional quantum gravity using non-perturbative renormalization group methods. We solve the corresponding equations for the fully momentum-dependent propagator, Newton's coupling and the cosmological constant. For the first…

高能物理 - 理论 · 物理学 2016-02-17 Nicolai Christiansen , Benjamin Knorr , Jan M. Pawlowski , Andreas Rodigast

We consider anisotropic cosmological models with an universe of dimension 4 or more, factorized into n>1 Ricci-flat spaces, containing an m-component perfect fluid of m non-interacting homogeneous minimally coupled scalar fields under…

广义相对论与量子宇宙学 · 物理学 2015-06-25 U. Kasper , M. Rainer , A. Zhuk

Using renormalized field theory, we examine the dynamics of a growing surface, driven by an obliquely incident particle beam. Its projection on the reference (substrate) plane selects a ``parallel'' direction, so that the evolution equation…

统计力学 · 物理学 2009-11-11 B. Schmittmann , Gunnar Pruessner , H. K. Janssen

Multidimensional cosmological models with $n (n > 1)$ spaces of constant curvature are discussed classically and with respect to canonical quantization. These models are integrable in the case of Ricci flat internal spaces. For positive…

广义相对论与量子宇宙学 · 物理学 2009-09-25 U. Bleyer , A. Zhuk

Oscillating moduli fields can support a cosmological scaling solution in the presence of a perfect fluid when the scalar field potential satisfies appropriate conditions. We examine when such conditions arise in higher-dimensional,…

高能物理 - 理论 · 物理学 2008-11-26 James E. Lidsey , Karim A. Malik

Let $(M^{n},g_{0})$ be a $n=3,4,5$ dimensional, closed Riemannian manifold of positive Yamabe invariant. For a smooth function $K>0$ on $M$ we consider a scalar curvature flow, that tends to prescribe $K$ as the scalar curvature of a metric…

微分几何 · 数学 2015-09-03 Martin Mayer