Projects per year
Abstract
In the holographic approach to cosmology, cosmological observables are described in terms of correlators of a three-dimensional boundary quantum field theory. As a concrete model, we study the 3D massless SU(N) scalar matrix field theory with a ϕ4�4 interaction. On the lattice, the energy-momentum tensor (EMT) in this theory can mix with the operator ϕ2�2. We utilize the Wilson Flow to renormalize the EMT on the lattice, and present numerical results for the mixing coefficient for N=2�=2. Obtaining the renormalized EMT will allow us to make predictions for the CMB power spectra in the regime where the dual QFT is non-perturbative.
Original language | English |
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Title of host publication | Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021) |
Publisher | Sissa Medialab Srl |
Pages | 1-10 |
Volume | 396 |
DOIs | |
Publication status | Published - 8 Jul 2022 |
Event | The 38th International Symposium on Lattice Field Theory - Massachusetts Institute of Technology, Cambridge, United States Duration: 26 Jul 2021 → 30 Jul 2021 Conference number: 38 https://indico.cern.ch/event/1006302/ |
Publication series
Name | Proceedings of Science |
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Publisher | Sissa Medilab |
ISSN (Electronic) | 1824-8039 |
Conference
Conference | The 38th International Symposium on Lattice Field Theory |
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Abbreviated title | LATTICE 2021 |
Country/Territory | United States |
City | Cambridge |
Period | 26/07/21 → 30/07/21 |
Internet address |
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Dive into the research topics of 'Renormalisation of the 3D SU(N) scalar energy-momentum tensor using the Wilson flow'. Together they form a unique fingerprint.Projects
- 4 Finished
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European network for Particle physics, Lattice field theory and Extreme computing
Portelli, A. (Principal Investigator)
1/01/19 → 30/09/23
Project: Research
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Particle Theory at the Higgs Centre
Ball, R. (Principal Investigator), Boyle, P. (Co-investigator), Del Debbio, L. (Co-investigator), Gardi, E. (Co-investigator), Horsley, R. (Co-investigator), Kennedy, A. (Co-investigator), O'Connell, D. (Co-investigator), Smillie, J. (Co-investigator) & Zwicky, R. (Co-investigator)
1/10/17 → 30/09/21
Project: Research
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Search for new physics through lattice simulations
Portelli, A. (Principal Investigator)
1/10/17 → 30/09/23
Project: Research