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### What Happens If String Theory Is Wrong? | Astronomy.com

Many scientists have hoped string theory will one day lead to a unified theory of physics. But if it can’t, dark matter, dark energy, and cosmic inflation are in trouble. Jul 27, 2015 ... For more than a decade, the American public has been fascinated with string theory. Science popularizers like Brian Greene produced hit TV ...
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### A SHORT COURSE IN STRING THEORY (WITH NO EQUATIONS ...

Dec 11, 1996 ... But that's not what has physicists so excited about string theory. ... and quantum theory have been proven true in thousands of experiments.
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### Will String Theory Finally Be Put To The Experimental Test ...

Physicists have found a way the theory might limit the cosmic inflation that is thought to have expanded the early universe Mar 25, 2020 ... Many physicists consider string theory our best hope for combining quantum physics and gravity into a unified theory of everything.
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### Physicist Is A Step Closer To Solving A String Theory - Tech Explorist

Since the 1960s, researchers have been puzzling string theory, a theoretical framework of reality that includes tiny, wriggling one-dimensional objects- Jul 1, 2019 ... Primarily studied as a broad way to address various questions in fundamental physics, it has since been applied to topics ranging from black ...
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### Obstacles To Constructing De Sitter Space In String Theory

There have been many attempts to construct de Sitter space-times in string
theory. While arguably there have been some successes, this has proven
challenging, leading to the de Sitter swampland conjecture: quantum theories of
gravity do not admit stable or metastable de Sitter space. Here we explain
that, within controlled approximations, one lacks the tools to construct de
Sitter space in string theory. Such approximations would require the existence
of a set of (arbitrarily) small parameters, subject to severe constraints. But
beyond this one also needs an understanding of big-bang and big-crunch
singularities that is not currently accessible to standard approximations in
string theory. The existence or non-existence of metastable de Sitter space in
string theory remains a matter of conjecture. Aug 27, 2020 ... While arguably there have been some successes, this has proven challenging, leading to the de Sitter swampland conjecture: quantum theories ...
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### Can String Theory Be Tested? | NOVA | PBS

The official website for NOVA. NOVA is the most-watched prime time science series on American television, reaching an average of five million viewers weekly. Sep 24, 2012 ... For decades, physicists have been trying to combine quantum ... Complicating matters further, string theory has so many variants that there ...
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### Why String Theory Is Both A Dream And A Nightmare

Few scientific ideas have been as polarizing as string theory. There are good reasons to both love it and hate it. Feb 26, 2020 ... For perhaps the last 35 years, string theory has been the dominant idea in theoretical particle physics, with more scientific papers arising ...
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### What Is String Theory ?

For technical reasons, the gravitational force, the most familiar in our every day lives, has proven very difficult to describe microscopically. This has been ...
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### Why Is M-Theory The Leading Candidate For Theory Of Everything ...

The mother of all string theories passes a litmus test that, so far, no other candidate theory of quantum gravity has been able to match. Dec 18, 2017 ... The mother of all string theories passes a litmus test that, so far, no other candidate theory of quantum gravity has been able to match.
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### String Theory Finally Does Something Useful | WIRED

String theory has finally made a prediction that can be tested with experiments — but in a completely unexpected realm of physics. The theory has long been touted as the best hope for a unified “theory of everything,” bringing together the physics of the vanishingly small and the mindbendingly large. But it has also been […] Sep 2, 2010 ... The theory has long been touted as the best hope for a unified “theory of everything,” bringing together the physics of the vanishingly ...
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### How Far Is String Theory From Being Proven And What Will It Take ...

String theory will never be proven, because no theory can ever be proven — only refuted. The strongest criticism of string theory is that it doesn't appear (so ...
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