نوع مقاله : پژوهشی

نویسنده

استادیار پژوهشکده مطالعات بنیادین علم و فناوری دانشگاه شهید بهشتی

چکیده

مفهوم هم وردایی عام یکی از مفاهیم مهم در نظریه نسبیت عام است که در فهم چیستی آن مشکلات و ابهامات زیادی بروز کرده است. در این مقاله،ضمن توضیح در مورد چیستی مفهوم هم وردایی عام،دیدگاه اندرسون – فریدمن در مورد مفهوم شیء مطلق بیان می شود. شیء مطلق، در این دیدگاه، متمایز کننده نسبیت عام از نظریه های دیگر است. همچنین دو تعریف از مفهوم هم وردایی عام را، یعنی، هم وردایی عام صوری را وهم وردایی عام جوهری را که ارمن ارئه داده است بیان می کنیم. ارمن با بیان اینکه نسبیت عام نظریه ای است که هم وردایی عام جوهری را متحقق می سازد، آن را از دیگر نظریه های فضا – زمانی متمایز می کند. ما در این مقاله،دو دیدگاه فوق را بررسی می کنیم و تمایز آنها را مشخص می سازیم.

تازه های تحقیق

general covariance, space – time theories, absolute object, Friedman’ viewpoint, Earman’s viewpoint

کلیدواژه‌ها

عنوان مقاله [English]

General covariance, Friedman and Earman’s viewpoints

نویسنده [English]

  • saeid masoumi

Assistant Professor, Research Institute for Basic Sciences and Technology, Shahid Beheshti University

چکیده [English]

The concept of general covariance is one of the most important concepts in general theory of relativity, which there are a lot of confusing in the understanding of its correct meaning. In this paper I explain and try to elucidate this concept and I will discuss Anderson- Friedman’s absolute object, regarded as what distinguishes between general relativity and other space – time theories. I also consider Earman’s two definitions of general covariance; formal general covariance and substantive general covariance which by introducing these two definition he gives the distinguishing characteristic of general relativity which is its realization of substantive general covariance. Eventually I compare those two viewpoints and discern their distinction

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