PIRSA:17060023 Conference Other

DOI10.48660/17060023

Conference/School: PI Day

Franco Rubio, A. (2017). Entanglement structure and UV regularization in cMERA. Perimeter Institute. https://pirsa.org/17060023

Franco Rubio, Adrian. Entanglement structure and UV regularization in cMERA. Perimeter Institute, Jun. 01, 2017, https://pirsa.org/17060023 

@misc{ pirsa_PIRSA:17060023,
  doi = {10.48660/17060023},
  url = {https://pirsa.org/17060023},
  author = {Franco Rubio, Adrian},
  keywords = {Other},
  language = {en},
  title = {Entanglement structure and UV regularization in cMERA},
  publisher = {Perimeter Institute},
  year = {2017},
  month = {jun},
  note = {PIRSA:17060023 see, \url{https://pirsa.org}}
}

Abstract

We give an introduction to cMERA, a continuous tensor networks ansatz for ground states of QFTs. We also explore a particular feature of it: an intrinsic length scale that acts as an ultraviolet cutoff. We provide evidence for the existence of this cutoff based on the entanglement structure of a particular family of cMERA states, namely Gaussian states optimized for free bosonic and fermionic CFTs. Our findings reflect that short distance entanglement is not fully present in the ansatz states, thus hinting at ultraviolet regularization.

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