The nonperturbative functional renormalization group and its applications
The renormalization group plays an essential role in many areas of physics, both
conceptually and as a practical tool to determine the long-distance low-energy properties of …
conceptually and as a practical tool to determine the long-distance low-energy properties of …
The Gross-Neveu-Yukawa archipelago
A bstract We perform a bootstrap analysis of a mixed system of four-point functions of
bosonic and fermionic operators in parity-preserving 3d CFTs with O (N) global symmetry …
bosonic and fermionic operators in parity-preserving 3d CFTs with O (N) global symmetry …
Universal quantum criticality in the metal-insulator transition of two-dimensional interacting Dirac electrons
The metal-insulator transition has been a subject of intense research since Mott first
proposed that the metallic behavior of interacting electrons could turn to an insulating one as …
proposed that the metallic behavior of interacting electrons could turn to an insulating one as …
Large quantum field theory
JA Gracey - International Journal of Modern Physics A, 2018 - World Scientific
We review the development of the large N method, where N indicates the number of
flavours, used to study perturbative and nonperturbative properties of quantum field theories …
flavours, used to study perturbative and nonperturbative properties of quantum field theories …
Solving the fermion sign problem in quantum Monte Carlo simulations by Majorana representation
We discover a quantum Monte Carlo (QMC) method to solve the fermion sign problem in
interacting fermion models by employing a Majorana representation of complex fermions …
interacting fermion models by employing a Majorana representation of complex fermions …
Four-loop critical exponents for the Gross-Neveu-Yukawa models
We study the chiral Ising, the chiral XY, and the chiral Heisenberg models at four-loop order
with the perturbative renormalization group in 4-ε dimensions and compute critical …
with the perturbative renormalization group in 4-ε dimensions and compute critical …
Fermionic quantum criticality in honeycomb and -flux Hubbard models: Finite-size scaling of renormalization-group-invariant observables from quantum Monte Carlo
We numerically investigate the critical behavior of the Hubbard model on the honeycomb
and the π-flux lattice, which exhibits a direct transition from a Dirac semimetal to an …
and the π-flux lattice, which exhibits a direct transition from a Dirac semimetal to an …
Line defect RG flows in the ε expansion
WH Pannell, A Stergiou - Journal of High Energy Physics, 2023 - Springer
A bstract A general analysis of line defect renormalisation group (RG) flows in the ε
expansion below d= 4 dimensions is undertaken. The defect beta function for general scalar …
expansion below d= 4 dimensions is undertaken. The defect beta function for general scalar …
Bootstrap** 3D fermions with global symmetries
A bstract We study the conformal bootstrap for 4-point functions of fermions< ψ i ψ j ψ k ψ ℓ>
in parity-preserving 3d CFTs, where ψ i transforms as a vector under an O (N) global …
in parity-preserving 3d CFTs, where ψ i transforms as a vector under an O (N) global …
Scale symmetry breaking and generation of mass at quantum critical points
C Cresswell-Hogg, DF Litim - Journal of High Energy Physics, 2024 - Springer
A bstract We study an asymptotically free theory of N relativistic Dirac fermions and a real
scalar field coupled by Yukawa and scalar self-interactions in three dimensions using …
scalar field coupled by Yukawa and scalar self-interactions in three dimensions using …