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Abstract / Description of output
In the holographic approach to cosmology, cosmological observables are described in terms of correlators of a threedimensional 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 energymomentum 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 nonperturbative.
Original language  English 

Title of host publication  Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021) 
Publisher  Sissa Medialab Srl 
Pages  110 
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 

Publisher  Sissa Medilab 
ISSN (Electronic)  18248039 
Conference
Conference  The 38th International Symposium on Lattice Field Theory 

Abbreviated title  LATTICE 2021 
Country/Territory  United States 
City  Cambridge 
Period  26/07/21 → 30/07/21 
Internet address 
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European network for Particle physics, Lattice field theory and Extreme computing
1/01/19 → 30/09/23
Project: Research


Particle Theory at the Higgs Centre
Ball, R., Boyle, P., Del Debbio, L., Gardi, E., Horsley, R., Kennedy, A., O'Connell, D., Smillie, J. & Zwicky, R.
1/10/17 → 30/09/21
Project: Research