PIRSA:08110033 Scientific Series Quantum Fields and Strings

DOI10.48660/08110033

Series: Quantum Fields and Strings

Faulkner, T. (2008). Meson widths from string worldsheet instantons.. Perimeter Institute. https://pirsa.org/08110033

Faulkner, Thomas. Meson widths from string worldsheet instantons.. Perimeter Institute, Nov. 25, 2008, https://pirsa.org/08110033 

@misc{ pirsa_PIRSA:08110033,
  doi = {10.48660/08110033},
  url = {https://pirsa.org/08110033},
  author = {Faulkner, Thomas},
  keywords = {Quantum Fields and Strings},
  language = {en},
  title = {Meson widths from string worldsheet instantons.},
  publisher = {Perimeter Institute},
  year = {2008},
  month = {nov},
  note = {PIRSA:08110033 see, \url{https://pirsa.org}}
}

Abstract

We discuss various properties of holographic mesons in a deconfined strongly coupled plasma. We show that such mesons obtain a width from a non-perturbative effect. On the string theory side this is due to open string modes on a D-brane tunneling into a black hole through worldsheet instantons. On the field theory side these instantons have the simple interpretation as heavy thermal quarks. We also comment on how this non-perturbative effect has important consequences for the phase structure of the Yang-Mills theory obtained in the classical gravity limit.

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