9th General Meeting of the LHC EFT Working Group

Session

EFT formalism

1 Dec 2025, 16:15

4/3-006 - TH Conference Room (CERN)

Conveners

EFT formalism

• Ken Mimasu (University of Southampton)

19. Renormalization of general Effective Field Theories

Pablo Olgoso Ruiz (University of Padova)

01/12/2025, 16:15

We present the latest results in the renormalization of general Effective Field Theories. After describing the most general local, Lorentz-invariant, effective field theory of scalars, fermions and gauge bosons (up to mass dimension 6), we obtain a Green’s and a physical basis, the reduction of the former to the latter, and the renormalization group equations at one-loop order.

12. Positivity in EFT Renormalization

Jasper Roosmale Nepveu (National Taiwan University)

01/12/2025, 16:40

Positivity bounds constrain the parameter space of effective field theories (EFTs) at low energies, relying only on basic principles of the underlying high-energy dynamics. To complement experimental studies with these bounds, it is important to understand their robustness under loop corrections and across different energy scales. In this talk, I will present a general result that determines...

17. Emergent Curvature from Flat-Space QFTs: A Computational Search for Gravity

Alon Lifshits

01/12/2025, 17:05

General Relativity (GR) continues to provide an exceptionally accurate description of gravitational phenomena at macroscopic scales. Yet its reconciliation with quantum mechanics remains elusive [1]. A compelling strategy treats GR as a low-energy Effective Field Theory (EFT), seeking its high-energy extension.

Progress in this direction would require matching candidate UV theories to the...

8. EFT meets Conformal Field Theory

Johan Henriksson (CERN)

01/12/2025, 17:30

In EFT, the computation of anomalous dimensions of composite operators in $4-\epsilon$ dimensions is central. Precisely this computation has a completely different application, namely to the $\epsilon$-expansion of conformal field theories (CFTs), where instead of taking $\epsilon\to0$ one is interested in results for 3d theories at $\epsilon=1$. Anomalous dimensions of composite operators...