Group field theory

In this article, we will explore the topic of Group field theory in depth, addressing its origins, its relevance today, and the possible implications it has for various aspects of society. From its first manifestations to its effects on the contemporary world, Group field theory has aroused the interest of academics, experts and ordinary people due to its impact on culture, economics and politics. Throughout these pages, we will examine different perspectives to offer a complete and objective view on Group field theory, with the purpose of enriching our readers' knowledge and promoting informed dialogue on this fascinating topic.

Not to be confused with group theory. This article is about group field theory as a candidate theory of quantum gravity.
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Group field theory (GFT) is a quantum field theory in which the base manifold is taken to be a Lie group. It is closely related to background independent quantum gravity approaches such as loop quantum gravity, the spin foam formalism and causal dynamical triangulation. Its perturbative expansion can be interpreted as spin foams and simplicial pseudo-manifolds (depending on the representation of the fields). Thus, its partition function defines a non-perturbative sum over all simplicial topologies and geometries, giving a path integral formulation of quantum spacetime.

See also

References

  • Wayback Machine see Sec 6.8 Dynamics: III. Group field theory
  • Freidel, L. (2005). "Group Field Theory: An Overview". International Journal of Theoretical Physics. 44 (10): 1769–1783. arXiv:hep-th/0505016. Bibcode:2005IJTP...44.1769F. doi:10.1007/s10773-005-8894-1. S2CID 119099369.
  • Oriti, Daniele (2006). "The group field theory approach to quantum gravity". arXiv:gr-qc/0607032. Bibcode:2006gr.qc.....7032O. {{cite journal}}: Cite journal requires |journal= (help)
  • Oriti, Daniele (2009). "The Group Field Theory Approach to Quantum Gravity: A QFT for the Microstructure of Spacetime" (PDF). arXiv:0912.2441. {{cite journal}}: Cite journal requires |journal= (help)
  • Geloun, Joseph Ben; Krajewski, Thomas; Magnen, Jacques; Rivasseau, Vincent (2010). "Linearized group field theory and power-counting theorems". Classical and Quantum Gravity. 27 (15): 155012. arXiv:1002.3592. Bibcode:2010CQGra..27o5012B. doi:10.1088/0264-9381/27/15/155012. S2CID 29020457.
  • Ben Geloun, J.; Gurau, R.; Rivasseau, V. (2010). "EPRL/FK group field theory". Europhysics Letters. 92 (6): 60008. arXiv:1008.0354. Bibcode:2010EL.....9260008B. doi:10.1209/0295-5075/92/60008. S2CID 119247896.
  • Ashtekar, Abhay; Campiglia, Miguel; Henderson, Adam (2009). "Loop quantum cosmology and spin foams". Physics Letters B. 681 (4): 347–352. arXiv:0909.4221. Bibcode:2009PhLB..681..347A. doi:10.1016/j.physletb.2009.10.042. S2CID 56281948.
  • Fairbairn, Winston J.; Livine, Etera R. (2007). "3D spinfoam quantum gravity: Matter as a phase of the group field theory". Classical and Quantum Gravity. 24 (20): 5277–5297. arXiv:gr-qc/0702125. Bibcode:2007CQGra..24.5277F. doi:10.1088/0264-9381/24/20/021. S2CID 119369221.
  • Alexandrov, Sergei; Roche, Philippe (2011). "Critical overview of loops and foams". Physics Reports. 506 (3–4): 41–86. arXiv:1009.4475. Bibcode:2011PhR...506...41A. doi:10.1016/j.physrep.2011.05.002. S2CID 118543391.
  • Gielen, Steffen; Oriti, Daniele; Sindoni, Lorenzo (2013). "Cosmology from Group Field Theory Formalism for Quantum Gravity". Physical Review Letters. 111 (3): 031301. arXiv:1303.3576. Bibcode:2013PhRvL.111c1301G. doi:10.1103/PhysRevLett.111.031301. PMID 23909305. S2CID 14203682.


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