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原创 爱因斯坦预言一一应验,为何它还未实现?科学家担忧的事还是 ...
爱因斯坦曾经有过一个研究叫做宇宙常数,他为了解释物质密度不为零的静态宇宙的存在,便在场方程中引进一个与度规张量成比例的项,用符号Λ表示。这个比例常数很小,在银河尺度范围内可忽略不计,只在宇宙尺度下,Λ才可能有意义,因此称之为宇宙常数。但这一结论在爱因 ...
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