183 citations · 821 across the 33 of their papers we have counts for
33 papers
Bremsstrahlung function from Goldstone bosons in AdS
Federico Castellani, Lorenzo Di Pietro, Valentina Forini +1
We study quantum field theory on the AdS worldsheet of the fundamental string dual to the half-BPS Wilson line of super Yang-Mills. We consider a recently propo…
Symmetry extension by condensation defects II: general dimensions and higher-groups
Matteo Bertolini, Lorenzo Di Pietro, Stefano C. Lanza +1
We discuss a class of symmetry structures in general spacetime dimension that arise when gauging symmetries in theories with a cubic 't Hooft anomaly. The anomaly mixes two Abelian…
Exploring Confinement in Anti-de Sitter Space
Riccardo Ciccone, Fabiana De Cesare, Lorenzo Di Pietro +1
We study Yang-Mills theory on four dimensional Anti-de Sitter space. The Dirichlet boundary condition cannot exist at arbitrarily large radius because it would give rise to colored…
Anomalies and Persistent Order in the Chiral Gross-Neveu model
Riccardo Ciccone, Lorenzo Di Pietro, Marco Serone
We study the chiral Gross-Neveu model at finite temperature and chemical potential . The analysis is performed by relating the theory to a Wess-Zumin…
Cosmological Correlators at Finite Coupling
Lorenzo Di Pietro, Victor Gorbenko, Shota Komatsu
We study finite-coupling effects of QFT on a rigid de Sitter (dS) background taking the vector model at large as a solvable example. Extending standard large techniq…
Conformal boundary conditions for a 4d scalar field
Lorenzo Di Pietro, Edoardo Lauria, Pierluigi Niro
We construct unitary, stable, and interacting conformal boundary conditions for a free massless scalar in four dimensions by coupling it to edge modes living on a boundary. The bou…
Taming Mass Gap with Anti-de-Sitter Space
Christian Copetti, Lorenzo Di Pietro, Ziming Ji +1
Anti-de-Sitter space acts as an infra-red cut off for asymptotically free theories, allowing interpolation between a weakly-coupled small-sized regime and a strongly-coupled flat-s…
BCFT One-point Functions of Coulomb Branch Operators
Davide Bason, Lorenzo Di Pietro, Roberto Valandro +1
We show that supersymmetry can be used to compute the BCFT one-point function coefficients for chiral primary operators, in 4d SCFTs with -BPS boundary…
Scalar QED in AdS
Ankur, Dean Carmi, Lorenzo Di Pietro
We consider scalar QED with flavors in AdS. For the theory is strongly-coupled in the IR. We use the spin 1 spectral representation to compute and efficiently resum…
Free Energy on the Sphere for Non-Abelian Gauge Theories
Fabiana De Cesare, Lorenzo Di Pietro, Marco Serone
We compute the partition function of the fixed point of non-abelian gauge theories in continuous , using the -expansion around . We illustrate in detail the techni…
Factorization and global symmetries in holography
Francesco Benini, Christian Copetti, Lorenzo Di Pietro
We consider toy models of holography arising from 3d Chern-Simons theory. In this context a duality to an ensemble average over 2d CFTs has been recently proposed. We put forward a…
On the Inhomogeneous Phase of the Chiral Gross-Neveu Model
Riccardo Ciccone, Lorenzo Di Pietro, Marco Serone
There is substantial evidence that the ground state of the 2d chiral Gross-Neveu model, in the presence of a fermion number chemical potential and in the large limit…
Bootstrapping boundary-localized interactions II: Minimal models at the boundary
Connor Behan, Lorenzo Di Pietro, Edoardo Lauria +1
We provide evidence for the existence of non-trivial unitary conformal boundary conditions for a three-dimensional free scalar field, which can be obtained via a coupling to the m'…
Resurgence and Expansion in Integrable Field Theories
Lorenzo Di Pietro, Marcos Mariño, Giacomo Sberveglieri +1
In theories with renormalons the perturbative series is factorially divergent even after restricting to a given order in , making the expansion a natural testing ground…
Analyticity and Unitarity for Cosmological Correlators
Lorenzo Di Pietro, Victor Gorbenko, Shota Komatsu
We study the fundamentals of quantum field theory on a rigid de Sitter space. We show that the perturbative expansion of late-time correlation functions to all orders can be equiva…
Five-dimensional CFTs from the -expansion
Fabiana De Cesare, Lorenzo Di Pietro, Marco Serone
We look for UV fixed points of non-abelian gauge theories in dimensions with Dirac fermions in the fundamental representation, using the available five-loop…
Bootstrapping boundary-localized interactions
Connor Behan, Lorenzo Di Pietro, Edoardo Lauria +1
We study conformal boundary conditions for the theory of a single real scalar to investigate whether the known Dirichlet and Neumann conditions are the only possibilities. For this…
Renormalization of Galilean Electrodynamics
Shira Chapman, Lorenzo Di Pietro, Kevin T. Grosvenor +1
We study the quantum properties of a Galilean-invariant abelian gauge theory coupled to a Schrödinger scalar in 2+1 dimensions. At the classical level, the theory with minimal coup…
Looking through the QCD Conformal Window with Perturbation Theory
Lorenzo Di Pietro, Marco Serone
We study the conformal window of QCD using perturbation theory, starting from the perturbative upper edge and going down as much as we can towards the strongly coupled regime. We d…
3d Abelian Gauge Theories at the Boundary
Lorenzo Di Pietro, Davide Gaiotto, Edoardo Lauria +1
A four-dimensional Abelian gauge field can be coupled to a 3d CFT with a symmetry living on a boundary. This coupling gives rise to a continuous family of boundary conformal…
Operator mixing in -expansion: scheme and evanescent (in)dependence
Lorenzo Di Pietro, Emmanuel Stamou
We consider theories with fermionic degrees of freedom that have a fixed point of Wilson-Fisher type in non-integer dimension . Due to the presence of evanescent operator…
Cardy Formula for 4d SUSY Theories and Localization
Lorenzo Di Pietro, Masazumi Honda
We study 4d supersymmetric theories on a compact Euclidean manifold of the form . Partition functions of gauge theories on this background…
Quantum Electrodynamics in d=3 from the epsilon-expansion
Lorenzo Di Pietro, Zohar Komargodski, Itamar Shamir +1
We study Quantum Electrodynamics in d=3 (QED_3) coupled to N_f flavors of fermions. The theory flows to an IR fixed point for N_f larger than some critical number N_f^c. For N_f<=…
The Casimir Energy in Curved Space and its Supersymmetric Counterpart
Benjamin Assel, Davide Cassani, Lorenzo Di Pietro +3
We study -dimensional Conformal Field Theories (CFTs) on the cylinder, , and its deformations. In the Casimir energy (i.e. the vacuum energy) is…