PIRSA:08040005 Scientific Series Cosmology

DOI10.48660/08040005

Series: Cosmology and Gravitation

Calcagni, G. (2008). Nonlocality and string field theory. Perimeter Institute. https://pirsa.org/08040005

Calcagni, Gianluca. Nonlocality and string field theory. Perimeter Institute, Apr. 22, 2008, https://pirsa.org/08040005 

@misc{ pirsa_PIRSA:08040005,
  doi = {10.48660/08040005},
  url = {https://pirsa.org/08040005},
  author = {Calcagni, Gianluca},
  keywords = {Cosmology},
  language = {en},
  title = {Nonlocality and string field theory},
  publisher = {Perimeter Institute},
  year = {2008},
  month = {apr},
  note = {PIRSA:08040005 see, \url{https://pirsa.org}}
}

Abstract

We introduce a formalism allowing us to localize a certain class of theories with an infinite number of derivatives (nonlocal), which include effective actions of string field theory. The number of degrees of freedom is finite and the Cauchy problem, Hamiltonian and quantization are all well-defined. As applications, the rolling tachyon of cubic string field theory and some cosmological toy models are considered.

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