Kategoria BISAC: Science >> Physics - Relativity

In this thesis, the author considers quantum gravity to investigate the mysterious origin of our universe and its mechanisms. He and his collaborators have greatly improved the analyticity of two models: causal dynamical triangulations (CDT) and n-DBI gravity, with the space-time foliation which is one common factor shared by these two separate models.

In the first part, the analytic method of coupling matters to CDT in 2-dimensional toy models is proposed to uncover the underlying mechanisms of the universe and to remove ambiguities remaining in CDT. As a result, the wave...

In this compendium of essays, some of the world s leading thinkers discuss their conceptions of space and time, as viewed through the lens of their own discipline. With an epilogue on the limits of human understanding, this volume hosts contributions from six or more diverse fields. It presumes only rudimentary background knowledge on the part of the reader.

Time and again, through the prism of intellect, humans have tried to diffract reality into various distinct, yet seamless, atomic, yet holistic, independent, yet interrelated disciplines and have attempted to study it...

This is the first of three volumes which together contain the complete range of Lord Rutherford s scientific papers, incorporating in addition addresses, general lectures, letters to editors, accounts of his scientific work and personal recollections by friends and colleagues.

Volume one, first published in 1962, includes early papers written in New Zealand, at the Cavendish Laboratory and during the Montreal period (1894-1906), as well as an introduction to Rutherford s early work by Sir Edward Appleton, and some reminiscences of his time in Canada by Professors H.L. Bronson and...

In this thesis the author discusses the phenomenology of supersymmetric models by means of experimental data set analysis of the electric dipole moment. There is an evaluation of the elementary processes contributing to the electric dipole moments within R-parity-violating supersymmetry, which call for higher-order perturbative computations.

A new method based on linear programming is developed and for the first time the non-trivial parameter space of R-parity violation respecting the constraints from existing experimental data of the electric dipole moment is revealed. As well, the...

100 Jahre nach Einsteins Arbeit zur Relativitatstheorie ist der Beweis fur die Existenz von Gravitationswellen eine Sensation. Die angesehenen Wissenschaftler Domenico Giulini und Claus Kiefer geben in diesem essential einen kompakten Uberblick uber dieses Phanomen der theoretischen Physik und uber die indirekten und die kurzlich gelungenen direkten Nachweise von Gravitationswellen. Vorhergesagt durch die Allgemeine Relativitatstheorie, entstehen sie in hochenergetischen astrophysikalischen Prozessen und liefern wertvolle Informationen uber Supernovae und die Kollision schwarzer...

This textbook introduces the current astrophysical observations of black holes, and discusses the leading techniques to study the strong gravity region around these objects with electromagnetic radiation. More importantly, it provides the basic tools for writing an astrophysical code and testing the Kerr paradigm. Astrophysical black holes are an ideal laboratory for testing strong gravity. According to general relativity, the spacetime geometry around these objects should be well described by the Kerr solution. The electromagnetic radiation emitted by the gas in the inner part of...