PIRSA:08020033 Scientific Series Quantum Fields and Strings

DOI10.48660/08020033

Series: Quantum Fields and Strings

Bertoldi, G. (2008). From Large N Double Scaling Limits to Non-Critical Superstrings. Perimeter Institute. https://pirsa.org/08020033

Bertoldi, Gaetano. From Large N Double Scaling Limits to Non-Critical Superstrings. Perimeter Institute, Feb. 19, 2008, https://pirsa.org/08020033 

@misc{ pirsa_PIRSA:08020033,
  doi = {10.48660/08020033},
  url = {https://pirsa.org/08020033},
  author = {Bertoldi, Gaetano},
  keywords = {Quantum Fields and Strings},
  language = {en},
  title = {From Large N Double Scaling Limits to Non-Critical Superstrings},
  publisher = {Perimeter Institute},
  year = {2008},
  month = {feb},
  note = {PIRSA:08020033 see, \url{https://pirsa.org}}
}

Abstract

We consider the large N limit of a class of fourdimensional supersymmetric theories in conjunction with a limit in their parameter space towards singular points where extra baryonic states become light, which causes the low-energy description to break down. However, this can be cured by defining a large N double scaling limit where one approaches the singularity by keeping the mass M of these states fixed. This limit has several interesting features. For example, the conventional \\\'t Hooft limit leads to a free theory of colour singlet states where all interactions are suppressed by powers of 1/N. In this case, the large N Hilbert space splits into two decoupled sectors, and one of them keeps residual interactions whose strength in inversely proportional to the mass M. We argue that for a class of these models the dynamics of this sector is dual to a non-critical superstring background, which is exactly solvable.

Resources

Next talk

Related Talks