door p__ » za 11 mar 2006, 22:32
Dit newscientist artikel gaat over ongeveer dezelfde vraag
"waarom is het universum zoals het is":
Ever since Albert Einstein wondered whether the world might have been different, physicists have been searching for a theory of everything to explain why the universe is the way it is. Now string theory, one of today's leading candidates, is in trouble. A growing number of physicists claim it is ill-defined and based on crude assumptions. Something fundamental is missing, they say. The main complaint is that rather than describing one universe, the theory describes 10ºº, each with different constants of nature, even different laws of physics.
But the inventor of string theory, physicist Leonard Susskind, sees this landscape of universes as a solution rather than a problem. He says it could answer the most perplexing question in physics: why the value of the cosmological constant, which describes the expansion rate of the universe, appears improbably fine-tuned for life. A little bigger or smaller and life could not exist. With an infinite number of universes, says Susskind, there is bound to be one with a cosmological constant like ours.
http://www.newscientist.com/channel/fundam...825305.800.html
Wat verder naar beneden op de pagina is het interview met Leonard Susskind.
Hij krijgt o.a. deze vraag voorgeschoteld:
If we do not accept the landscape idea(10ºº universes) are we stuck with intelligent design?
I doubt that physicists will see it that way. If, for some unforeseen reason, the landscape turns out to be inconsistent - maybe for mathematical reasons, or because it disagrees with observation - I am pretty sure that physicists will go on searching for natural explanations of the world. But I have to say that if that happens, as things stand now we will be in a very awkward position. Without any explanation of nature's fine-tunings we will be hard pressed to answer the ID critics. One might argue that the hope that a mathematically unique solution will emerge is as faith-based as ID.
Dit newscientist artikel gaat over ongeveer dezelfde vraag [i]"waarom is het universum zoals het is"[/i]:
[quote]Ever since Albert Einstein wondered whether the world might have been different, physicists have been searching for a theory of everything to explain why the universe is the way it is. Now string theory, one of today's leading candidates, is in trouble. A growing number of physicists claim it is ill-defined and based on crude assumptions. Something fundamental is missing, they say. The main complaint is that rather than describing one universe, the theory describes 10ºº, each with different constants of nature, even different laws of physics.
But the inventor of string theory, physicist Leonard Susskind, sees this landscape of universes as a solution rather than a problem. He says it could answer the most perplexing question in physics: why the value of the cosmological constant, which describes the expansion rate of the universe, appears improbably fine-tuned for life. A little bigger or smaller and life could not exist. With an infinite number of universes, says Susskind, there is bound to be one with a cosmological constant like ours.
[url=http://www.newscientist.com/channel/fundamentals/mg18825305.800.html]http://www.newscientist.com/channel/fundam...825305.800.html[/url][/quote]
Wat verder naar beneden op de pagina is het interview met Leonard Susskind.
Hij krijgt o.a. deze vraag voorgeschoteld:
[quote][b]If we do not accept the landscape idea([/b]10ºº[b] universes) are we stuck with intelligent design?[/b]
I doubt that physicists will see it that way. If, for some unforeseen reason, the landscape turns out to be inconsistent - maybe for mathematical reasons, or because it disagrees with observation - I am pretty sure that physicists will go on searching for natural explanations of the world. But I have to say that if that happens, as things stand now we will be in a very awkward position. Without any explanation of nature's fine-tunings we will be hard pressed to answer the ID critics. [i]One might argue that the hope that a mathematically unique solution will emerge is as faith-based as ID.[/i][/quote]