Perturbative deflection angles of timelike rays
نویسندگان
چکیده
منابع مشابه
Deflection and diffraction of x rays bound to curved surfaces.
We present two new x-ray optical effects observed on a whispering-gallery waveguide. The first is a gradual in-surface deflection of guided waves caused by the non-Euclidean intrinsic curvature of the waveguide surface. The second is the excitation of in-surface dynamical diffraction modes that reflects the strong influence of the surface photonic band structure of a crystalline waveguide. Both...
متن کاملTimelike duality.
Several stationary solutions of the low energy string equations are dualized with respect to their timelike symmetry. Many of the duals have simple physical interpretations. Those of the nonextremal three dimensional black hole and black string are negative mass black strings. The extremal cases of these, and extremal higher dimensional black strings also, give negative energy plane fronted wav...
متن کاملOn the Distribution of Angles between Geodesic Rays Associated with Hyperbolic Lattice Points
For every two points z0, z1 in the upper-half plane H, consider all elements γ in the principal congruence group Γ(N), acting on H by fractional linear transformations, such that the hyperbolic distance between z1 and γz0 is at most R > 0. We study the distribution of angles between the geodesic rays [z1, γz0] as R → ∞, proving that the limiting distribution exists independently of N and explic...
متن کاملDivergence of sun-rays by atmospheric refraction at large solar zenith angles
Abstract. For the determination of photolysis rates at large zenith angles it has been demonstrated that refraction by the earth’s atmosphere must be taken into account. In fact, due to the modified optical path the optical transmittance is thereby increased in most instances. Here we show that in addition the divergence of sun-rays, which is also caused by refraction but which reduces the dire...
متن کاملHolography with Timelike Bulk Hypersurfaces
We propose a new version of holographic principle. This proposal extends the holo-graphic principle based on the lightsheet to the one constraining the entropy passing through bulk hypersurface of timelike geodesics by the boundary area divided by 4G. We give a proof of the proposal in the classical regime based on a simple local entropy condition.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2020
ISSN: 0264-9381,1361-6382
DOI: 10.1088/1361-6382/ab852c