Hasil Pencarian  ::  Simpan CSV :: Kembali

Abstrak :
Teori Eddington-inspired Born-Infeld (EiBI) merupakan teori modifikasi dari teori relativitas umum. Dalam penelitian ini, kami menerapkan fenomena non-perturbatif, yaitu model kreasi alam semesta Vilenkin dan model Coleman-de Luccia (CdL) Instanton, kedalam kerangka teori EiBI. Pada model Vilenkin didapatkan hasil berupa aksi Euclidean SE. Hasil ini memiliki suku tambahan  yang berbeda dengan hasil teori relativitas umum. Sedangkan untuk model CdL dihitung solusi analitik menggunakan aproksimasi thin-wall dan solusi numerik. Pada solusi analitik ditemukan jari-jari gelembung dan aksi bounce B. hasil yang didapatkan menunjukkan B negatif, sangat berbeda dengan kasus relativitas umum yang memberikan B positif. Sedangkan untuk solusi numerik ditemukan bentuk profil medan skalar, faktor skala dan B. Untuk kasus ini B positif. Hasil solusi analitik dan solusi numerik memiliki perbedaan yang signifikan. Hal ini kemungkinan besar terjadi karena metode aproksimasi yang digunakan kurang tepat. ......Eddington-inspired Born-Infeld (EiBI) theory is a modified theory of general relativity. In this research, we will implement EiBI theory with non-perturbative quantum cosmology phenomena, starting with Vilenkins Creation of The Universes from Nothing and tunneling mechanism through Coleman-de Luccia (CdL) instanton. In Vilenkins model, we find the Euclidean action SE. This result differs from the general relativity counterpart by addition of extra term . For CdL instanton, we find the analytic solution using thin-wall approximation and the numerical solution. In the analytic solution, we find the radius of bubble and bounce action B.The value of B is negative, which is differs significantly from the general relativity result. As for the numerical solution, we find the scalar field, scale factors, and the bounce action B. This time B is positive. We can see that the analytic and numeric solutions have a very significant difference. This difference might appears because the approximation method used is not suitable for EiBI theory.

Abstrak :
This book is the first comprehensive account to trace the history of this pioneering spirit in the field of computing technologies. It covers everything up to and including the present-day handling of the huge demands imposed upon grid and distributed computing by full-scale LHC operations—operations which have for years involved many thousands of collaborating members worldwide and accordingly provide the original and natural testbed for grid computing concepts. This book takes the reader on a guided tour encompassing all relevant topics, including programming languages, software engineering, large databases, the web, and grid- and cloud computing. The important issue of intellectual property regulations for distributed software engineering and computing is also addressed.

Abstrak :
Mathematics for physical science and engineering is a complete text in mathematics for physical science that includes the use of symbolic computation to illustrate the mathematical concepts and enable the solution of a broader range of practical problems. It enables professionals to connect their knowledge of mathematics to either or both of the symbolic languages Maple and Mathematica. Due to the increasing importance of symbolic computation, the book begins by introducing that topic, before delving into its core mathematical topics. Each of those subjects is described in principle, and then applied through symbolic computing.The aim of the text is designed to clarify and optimize the efficiency of the student's acquisition of mathematical understanding and skill and to provide students with a mathematical toolbox that will rapidly become of routine use in a scientific or engineering career.