Beyond Einstein Perspectives on Geometry, Gravitation, and Cosmology in the Twentieth Century
نویسندگان
چکیده
منابع مشابه
0 Se p 20 08 Problems with Modified Theories of Gravity , as Alternatives to Dark Energy ∗
In this contribution to the conference “Beyond Einstein: Historical Perspectives on Geometry, Gravitation and Cosmology in the Twentieth Century”, we give a critical status report of attempts to explain the late accelerated expansion of the universe by modifications of general relativity. Our brief review of such alternatives to the standard cosmological model addresses mainly readers who have ...
متن کاملar X iv : 0 81 0 . 17 54 v 1 [ as tr o - ph ] 9 O ct 2 00 8 A Cosmic Vision Beyond Einstein
The acceleration of the cosmic expansion is a fundamental challenge to standard models of particle physics and cosmology. The new physics of dark energy may lie in the nature of gravity, the quantum vacuum, or extra dimensions. I give a brief overview of the puzzles and possibilities of dark energy, and discuss the confrontation of a wide variety of “beyond Einstein” models with the latest data...
متن کاملEinstein Universes Stabilized
The hypothesis that gravitational self-binding energy may be the source for the vacuum energy term of cosmology is studied in a Newtonian Ansatz. For spherical spaces the attractive force of gravitation and the negative pressure of the vacuum energy term form a self stabilizing system under very reasonable restrictions for the parameters, among them a characteristic coefficient β of self energy...
متن کاملRicci Flow Gravity
A theory of gravitation is proposed, modeled after the notion of a Ricci flow. In addition to the metric an independent volume enters as a fundamental geometric structure. Einstein gravity is included as a limiting case. Despite being a scalar-tensor theory the coupling to matter is different from Jordan-Brans-Dicke gravity. In particular there is no adjustable coupling constant. For the solar ...
متن کاملThe Role of the German Researchers in the Formation of Islamic Art Studies
In the beginning of the nineteenth century, with the increasing interest of the Europeans in the culture of the East, the first articles on the Islamic art and culture were appeared in German-speaking countries. In the mid nineteenth century, some entries in German encyclopedias were devoted to Islamic art, and from the end of the century, the first monographs on Islamic architecture and orname...
متن کامل