The World Function in Robertson-Walker Spacetime

نویسنده

  • Mark D. Roberts
چکیده

Amethod for finding the world function of Robertson-Walker spacetimes is presented. It is applied to find the world function for the k = 0, γ = 2, solution. The close point approximation for the RobertsonWalker world function is calculated upto fourth order.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Solution of Vacuum Field Equation Based on Physics Metrics in Finsler Geometry and Kretschmann Scalar

The Lemaître-Tolman-Bondi (LTB) model represents an inhomogeneous spherically symmetric universefilledwithfreelyfallingdustlikematterwithoutpressure. First,wehaveconsideredaFinslerian anstaz of (LTB) and have found a Finslerian exact solution of vacuum field equation. We have obtained the R(t,r) and S(t,r) with considering establish a new solution of Rµν = 0. Moreover, we attempttouseFinslergeo...

متن کامل

Vacuum quantum effect for the moving Plates in Robertson–Walker Spacetime

The energy-momentum tensor for a massless conformally coupled scalar field in the region between two parallel plates moving by uniform proper accelerations in k = −1 Robertson–Walker spacetime is investigated. We assume that the scalar field satisfies the Dirichlet boundary condition on the plates. k = −1 Robertson– Walker space is conformally related to the Rindler space, as a result we can ob...

متن کامل

Vacuum quantum effect for curved boundaries in static Robertson–Walker spacetime

The energy-momentum tensor for a massless conformally coupled scalar field in the region between two curved boundaries in k = −1 static Robertson–Walker spacetime is investigated. We assume that the scalar field satisfies the Dirichlet boundary condition on the boundaries. k = −1 Robertson–Walker space is conformally related to the Rindler space, as a result we can obtain vacuum expectation val...

متن کامل

Causal Set Phenomenology in Friedmann-Robertson-Walker Spacetime

The causal set approach to quantum gravity states that spacetime is not a continuous Lorenztian manifold but a causal set composed of discrete spacetime elements together with their causal relations. It is argued that using only causality and discreteness, one can recover a more fundamental theory of gravitation with interesting qualities. Though the theory is incomplete, some phenomenological ...

متن کامل

Impulse Action on D-particles in Robertson-Walker Space Times, Higher-Order Logarithmic Conformal Algebras and Cosmological Horizons

We demonstrate that an impulse action (‘recoil’) on a D-particle embedded in a (four-dimensional) cosmological Robertson-Walker (RW) spacetime is described, in a σ-model framework, by a suitably extended higher-order logarithmic world-sheet algebra of relevant deformations. We study in some detail the algebra of the appropriate two-point correlators, and give a careful discussion as to how one ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008