What's higher spin gauge theory all about?

In summary, there has been recent research on higher spin gauge theories, which aim to bypass the Weinberg-Witten no-go theorem that prohibits spins greater than 1. This topic is related to string theory and the mini-course by Simone Giombi discusses how higher spin theories surpass the spin two barrier. In the course, Giombi explains that the bulk gravity is the higher derivative corrections, but these are not known exactly. However, at the quadratic level, these corrections are equivalent to linear Einstein, but at the interacting level, there is still more to be explored.
  • #1
petergreat
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Recently I hear there's lots of research on higher spin gauge theories. I know nothing about it, so I'll ask some naive questions. How is Weinberg-Witten no-go theorem which forbids spins greater than 1 bypassed in these theories? Is the topic related to string theory? Thanks for answer.
 
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http://arxiv.org/abs/1007.0435
How higher-spin gravity surpasses the spin two barrier: no-go theorems versus yes-go examples
Xavier Bekaert, Nicolas Boulanger, Per Sundell

http://pirsa.org/C11003
Higher Spin Theories
Mini-Course by Simone Giombi

In the http://pirsa.org/11030093/" of Giombi's lectures Smolin asks a good (to help laymen like me) simple question at 22:30: What is the bulk gravity? G: Higher derivative corrections. S:Are they known exactly? G: No. S: Everything has higher derivative corrections, but the leading term is Einstein? G: At quadratic level, it is equivalent to linear Einstein. At interacting level ...
 
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1. What is spin in physics?

Spin is an intrinsic property of fundamental particles that describes their angular momentum. It is a quantum property, meaning it can only take on certain discrete values and cannot be continuously changed.

2. How is spin related to gauge theory?

Gauge theory is a framework used to describe the interactions between particles. Spin plays a crucial role in gauge theory because it describes how particles interact with each other through the exchange of gauge bosons.

3. What makes higher spin gauge theory different from other gauge theories?

Higher spin gauge theory is a specific type of gauge theory that includes particles with higher spin values, such as 3, 4, or even higher. This is in contrast to the standard model of particle physics, which only includes particles with spin values of 0, 1/2, and 1.

4. What are the applications of higher spin gauge theory?

Higher spin gauge theory has potential applications in understanding the behavior of black holes, quantum gravity, and other fundamental aspects of the universe. It may also help to unify different theories in physics, such as quantum mechanics and general relativity.

5. How is higher spin gauge theory being studied?

Higher spin gauge theory is a topic of ongoing research in theoretical physics. Scientists use mathematical models and simulations to study its implications and make predictions about its behavior. Experimental evidence for higher spin particles is also being sought through particle accelerators and other high-energy physics experiments.

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