Concept
Noncommutative quantum field theory
Publications associées (14)
Quantum Field Theory in AdS Space instead of Lehmann-Symanzik-Zimmerman Axioms
The boundary correlation functions for a quantum field theory (QFT) in a fixed anti-de Sitter (AdS) background should reduce to S-matrix elements in the flat-space limit. We consider this procedure in detail for four-point functions. With minimal assumptio ...
AMER PHYSICAL SOC2023Diagnosing weakly first-order phase transitions by coupling to order parameters
The hunt for exotic quantum phase transitions described by emergent fractionalized de-grees of freedom coupled to gauge fields requires a precise determination of the fixed point structure from the field theoretical side, and an extreme sensitivity to weak ...
2023Semiclassical methods in conformal field theories scrutinized by the epsilon-expansion
Conformal Field Theories (CFTs) are crucial for our understanding of Quantum Field Theory (QFT). Because of their powerful symmetry properties, they play the role of signposts in the space of QFTs. Any method that gives us information about their structure ...
EPFL2022Nonperturbative Quantum Field Theory in Curved Spacetime
Quantum Field Theory(QFT) as one of the most promising frameworks to study high energy and condensed matter physics, has been mostly developed by perturbative methods. However, perturbative methods can only capture a small island of the space of QFTs.QFT i ...
EPFL2022Towards bootstrapping RG flows: sine-Gordon in AdS
The boundary correlation functions for a Quantum Field Theory (QFT) in an Anti-de Sitter (AdS) background can stay conformally covariant even if the bulk theory undergoes a renormalization group (RG) flow. Studying such correlation functions with the numer ...
SPRINGER2021Spontaneous conformal symmetry breaking in fishnet CFT
Quantum field theories with exact but spontaneously broken conformal invariance have an intriguing feature: their vacuum energy (cosmological constant) is equal to zero. Up to now, the only known ultraviolet complete theories where conformal symmetry can b ...
ELSEVIER2020Perturbative and non-perturbative aspects of RG flows in quantum field theory
This thesis explores two aspects of the renormalization group (RG) in quantum field theory (QFT). In the first part we study the structure of RG flows in general Poincaré-invariant, unitary QFTs, and in particular the irreversibility properties and the rel ...
EPFL2016Warped dipole completed, with a tower of Higgs bosons
In the context of warped extra-dimensional models which address both the Planck-weak- and flavor-hierarchies of the Standard Model (SM), it has been argued that certain observables can be calculated within the 5D effective field theory only with the Higgs ...
Springer2015