PIRSA:12060044

Video URL

https://pirsa.org/12060044

The Quest for Localization

León García, J.J. (2012). The Quest for Localization. Perimeter Institute for Theoretical Physics. https://pirsa.org/12060044

León García, Juan José. The Quest for Localization. Perimeter Institute for Theoretical Physics, Jun. 25, 2012, https://pirsa.org/12060044 

          @misc{ scivideos_PIRSA:12060044,
            doi = {10.48660/12060044},
            url = {https://pirsa.org/12060044},
            author = {Le{\'o}n Garc{\'\i}a, Juan Jos{\'e}},
            keywords = {},
            language = {en},
            title = {The Quest for Localization},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2012},
            month = {jun},
            note = {PIRSA:12060044 see, \url{https://scivideos.org/pirsa/12060044}}
          }

Juan José León García Instituto de Física Fundamental (IFF - CSIC)

Talk numberPIRSA:12060044
DOI10.48660/12060044
Source RepositoryPIRSA
Collection
Talk Type Conference

Abstract

This talk aims to review the obstacles met in QFT to reach an appropriate definition for such a basic concept as localization. The anti-local character of the square root of the "- Laplace-Beltrami + mass^2" operator prevents the existence of localized states with a finite number of quanta. (Bosonic) quantum fields describe elementary excitations of an extended system whose ground state is the vacuum. No wonder, there is a complicated relationship between the cardinal (quantal) and continuous (spatial) sides of the theory. We will also analyze the roles (if any) played in RQI by the localized excitations of the vacuum.