Projects per year
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.
|Title of host publication||Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)|
|Publisher||Sissa Medialab Srl|
|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
|Name||Proceedings of Science|
|Conference||The 38th International Symposium on Lattice Field Theory|
|Abbreviated title||LATTICE 2021|
|Period||26/07/21 → 30/07/21|
FingerprintDive 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.
European network for Particle physics, Lattice field theory and Extreme computing
1/01/19 → 30/09/23
Search for new physics through lattice simulations
1/10/17 → 30/09/23
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