Diagrammatic routes to nonlocal correlations beyond dynamical mean field theory
Strong electronic correlations pose one of the biggest challenges to solid state theory.
Recently developed methods that address this problem by starting with the local, eminently …
Recently developed methods that address this problem by starting with the local, eminently …
Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
In the last two decades non-equilibrium spectroscopies have evolved from avant-garde
studies to crucial tools for expanding our understanding of the physics of strongly correlated …
studies to crucial tools for expanding our understanding of the physics of strongly correlated …
Tracking the footprints of spin fluctuations: A multimethod, multimessenger study of the two-dimensional Hubbard model
The Hubbard model represents the fundamental model for interacting quantum systems and
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …
Superconductivity and the pseudogap in the two-dimensional Hubbard model
Recently developed numerical methods have enabled the explicit construction of the
superconducting state of the Hubbard model of strongly correlated electrons in parameter …
superconducting state of the Hubbard model of strongly correlated electrons in parameter …
Analytical continuation of matrix-valued functions: Carathéodory formalism
Finite-temperature quantum field theories are formulated in terms of Green's functions and
self-energies on the Matsubara axis. In multiorbital systems, these quantities are related to …
self-energies on the Matsubara axis. In multiorbital systems, these quantities are related to …
Hidden fermionic excitation boosting high-temperature superconductivity in cuprates
The dynamics of a microscopic cuprate model, namely, the two-dimensional Hubbard
model, is studied with a cluster extension of the dynamical mean-field theory. We find a …
model, is studied with a cluster extension of the dynamical mean-field theory. We find a …
Fermi arcs from dynamical variational Monte Carlo
Variational Monte Carlo is a many-body numerical method that scales well with system size.
It has been extended to study the Green function only recently by Charlebois and Imada …
It has been extended to study the Green function only recently by Charlebois and Imada …
Coexistence of superconductivity and antiferromagnetism in the Hubbard model for cuprates
Antiferromagnetism and d-wave superconductivity are the most important competing ground-
state phases of cuprate superconductors. Using cellular dynamical mean-field theory for the …
state phases of cuprate superconductors. Using cellular dynamical mean-field theory for the …
Energetics of superconductivity in the two-dimensional Hubbard model
The energetics of the interplay between superconductivity and the pseudogap in high-
temperature superconductivity is examined using the eight-site dynamical cluster …
temperature superconductivity is examined using the eight-site dynamical cluster …
Practical consequences of the Luttinger-Ward functional multivaluedness for cluster DMFT methods
The Luttinger-Ward functional (LWF) has been a starting point for conserving
approximations in many-body physics for 50 years. The recent discoveries of its …
approximations in many-body physics for 50 years. The recent discoveries of its …