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VEFF

To make sure that you have the correct wages and working conditions in DNV, contact VEFF. VEFF is an organisation which protects the interests of all employees in DNV. W... VEFF er sentralt organisert i Parat YS. Hvis du ikke er medlem, ønsker vi deg velkommen til å bli med oss via medlemskapsiden til Parat, hvor du kan registrere deg via de...

veff.no

VEFF

and/or animal themedChildren's Lessons and ClinicsAdultLessons andClinicsAnimal Experience SessionsEducationand Groups Mobile Pony Rides and Petting ZooHoof TrimmingTrainingAccommodation (horses welcome)Catering (via Relish Rangitikei Check out a bit more about us using the tabs at the top of the page and you can also find us o...

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I Introduction

t˙\displaystyle\dot{t} =E/f(r),\displaystyle=\mathrm{E}/f(r), (6) ϕ˙\displaystyle\dot{\phi} =L/r2,\displaystyle=\mathrm{L}/r^{2}, (7) r˙2\displaystyle\dot{r}^{2} =E2−Veff,\disp... viaβ≃λL/κ−\beta\simeq\lambda_{L}/\kappa_{-}. Figure 2:Three-dimensional surface of the orbital angular velocityΩϕM\Omega_{\phi}Mat the photon sphere over(ξ/M...

arxiv.org 2025年12月4日

Waveform stability of black hole ringdown with stochastic horizon structure

[d2dr∗2+ω2−VRW(r∗)]Ψ(ω,r∗)=δVeff(r∗)Ψ(ω,r∗),\left[\frac{\mathrm{d}^{2}}{\mathrm{d}r_{*}^{2}}+\omega^{2}-V_{\rm RW}(r_{*})\right]\Psi(\omega,... G(r_{*},r_{*}^{\prime}), which satisfies the boundary conditions for the unperturbed operator, we can express the scattered wave solution via the first-order Born approximation...

arxiv.org 2025年12月15日

Probing Lorentz-violating effects via precession and accretion disk images of a rotating bumblebee black hole

r˙=−Veff(r,π/2)/grr.\dot{r}=-\sqrt{V_{\text{eff}}(r,\pi/2)/g_{rr}}. (17) Here we have chosen infalling timelike geodesics (r˙ 0\dot{r} 0), as they are more physically plausible for constructing accretion disk models in the subsequent analysis. In our model, we are interested in bound circular orbital motion, for which the conditionsVeff(r,π/2)=0V_{\...

arxiv.org 2025年11月8日

Shadow Ringing of Black Holes from Photon Sphere Quasinormal Modes

III.2QNM perturbations via RW-Zerilli We model the ringdown geometry as a single(ℓ,m)(\ell,m)linear perturbation of Schwarzschild, represented by a gauge-invariant master field that obeys a one-dimensional wave equation on the tortoise line. We adopt the Regge-Wheeler (axial/odd) and Zerilli (polar/even) formalisms and reconstruct the metric p...

arxiv.org 2025年9月15日

Gravitational decoupling and regular hairy black holes: Geodesic stability, quasinormal modes, and thermodynamic properties

IIIGeodesic stability around regular hairy black hole via Lyapunov exponents Lyapunov exponents are fundamental tools in the study of dynamical systems, widely used to char... Veff(r)=(L2r2−ε)f(r,β).V_{\text{eff}}(r)=\left(\frac{L^{2}}{r^{2}}-\varepsilon\right)f(r,\beta). (42) This effective potential plays a central role in analyzing the stability of circ...

arxiv.org 2025年3月15日

Ensemble inequivalence in the design of mixtures with super-Gibbs phase coexistence

A. Koistinen, J. V. I. Timonen, J. Zhou, E. Kontturi, O. J. Rojas, and G. Chu, Thermodynamically controlled multiphase separation of heterogeneous liquid crystal colloids, Nat Commun14, 5277 (2023). González García and Tuinier [2016]A. González García and R. Tuinier, Tuning the phase diagram of colloid-polymer mixtures via Yukawa interac...

arxiv.org 2025年1月13日

Probing higher curvature gravity via ringdown with overtones

ℒ~odd(2)∝12(∂tΨ)2−12(∂r∗Ψ)2−12VeffΨ2.\tilde{\mathcal{L}}^{(2)}_{\rm odd}\propto\frac{1}{2}\mathopen{}\mathclose{{\left(\partial_{t}\Psi}}\right)^{2}-\frac{1}{2}\mathopen{}\mathclose{{\left(\partial_{r_{*}}\!\Psi}}\right)^{2}-\frac{1}{2}V_{\rm eff}\Psi^{2}. (16) Here, we have omitted an irrelevant overall constant. From this Lagrangian, we obtain th...

arxiv.org 2024年10月1日

Probing Leptophobic Dark Sectors via Gravitational Wave Signatures

Veff(φS,T)=V0(φS)+VCW(φS)+VCT(φS)+VT(φS,T)+VD(φS,T)\displaystyle V_{\mathrm{eff}}(\varphi_{S},T)=V_{0}(\varphi_{S})+V_{\mathrm{CW}}(\varphi_{S})+V_{\mathrm{CT}}(\varphi_{S})+V_{\mathrm{T}}(\varphi_{S},T)+V_{D}(\varphi_{S},T) (23) The different potential terms are explained below:VCW(φS)V_{\mathrm{CW}}(...

arxiv.org

VEFF

VEFF

I Introduction