上海大学学报（英文版）
上海大學學報（英文版）
상해대학학보（영문판）
JOURNAL OF SHANGHAI UNIVERSITY (ENGLISH EDITION)
2006年
6期
497-499
,共3页
张可锋%黄增光%方伟%陆惠卿
張可鋒%黃增光%方偉%陸惠卿
장가봉%황증광%방위%륙혜경
Born-Infeld theory%Einstein's general relativity theory%deviation of light path
The discovery of "twin quasi-stellar objects" arose interests among astronomers and astrophysicists to study gravitational lensing problem. Deviation of light from straight path is caused by the presence of massive objects, i.e., the presence of gravitational field according to the general theory of relativity. It is shown that the low energy effective field theory on D-branes is of the Born-Infeld type. In this work a Born-Infeld type gravitational field is postulated. An explicit representation of the angular deviation of light path is derived based on the space time metric in the Born-Infeld theory.
