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宇宙大爆炸之前有什么? l 史蒂芬霍金

EXCLUSIVE: Stephen Hawking on What Existed Before the Big Bang

史蒂芬,每个人都想知道
So Stephen, everyone wants to know.
宇宙在大爆炸之前是什么
What was around before the Big Bang?
大爆炸之前什么都没有
Nothing was surround before the big BigBang.
根据爱因斯坦的广义相对论
According to Einstein’s general theory of relativity,
时间和空间形成时空连续体
space and time together form a space-time continuum,
由于物质和能量的存在
or manifold which has not flat but curved
时空形成弯曲流形
by the matter and energy in it.
我采用欧几里得的方法来解决量子引力的问题
I adopt a Euclidian approach to quantumgravity
来解释宇宙的开端
to describe the beginning of the universe.
在这里真实时间被理想时间取代
In this, ordinary real time isreplaced by imaginary time,
像是空间的第四个方向
which behaves like a fourth direction of space.
欧几里得理论里
In the Euclidean approach,
理想时间里,宇宙历史
the history of the universe in imaginary time
是四维的曲面
is a four-dimensional, curved surface
像地球表面一样的曲面但多两个维度
like the surface of the Earth, but with two more dimensions.
吉姆·哈特和我提出了“无边界”条件
Jim Hartle and I proposed a”no-boundary” condition.
宇宙是没有边界的
The boundary condition of the universe is that it has no boundary.
另一方面
In order terms,
欧几里得时空是一个没有终点的封闭面
the Euclidean space time is a closed surface without end,
就如同地球的表面
like the surface of the Earth.
我们可以把理想时间看成实际时间
One can regard imaginary in real time
起点是南极
as beginning at the South Pole,
这是一般物理定律支持的最新的有关时空的观点
which is thesmooth point of space-time where the normal laws of physics hold.
南极以南什么都没有
There is nothing south of the South Pole,
同样地,大爆炸之前什么都没有
so there was nothing around before the Big Bang

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大约140亿年前,一场大爆炸之后,有了宇宙,有了时空,可是宇宙和时空是什么? 让霍金给你答案!

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收集自网络

翻译译者

曾庆HONG

审核员

审核员JC

视频来源

https://www.youtube.com/watch?v=FJ88kC2Nx8M

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