144 citations · 970 across the 40 of their papers we have counts for
40 papers
Generalized Maximum Entropy Methods as Limits of the Average Spectrum Method
Khaldoon Ghanem, Erik Koch
We show that in the continuum limit, the average spectrum method (ASM) is equivalent to maximizing Rényi entropies of order , of which Shannon entropy is the special case .…
Connecting Tikhonov regularization to the maximum entropy method for the analytic continuation of quantum Monte Carlo data
Khaldoon Ghanem, Erik Koch
Analytic continuation is an essential step in extracting information about the dynamical properties of physical systems from quantum Monte Carlo (QMC) simulations. Different method…
Extending the average spectrum method: Grid points sampling and density averaging
Khaldoon Ghanem, Erik Koch
Analytic continuation of imaginary time or frequency data to the real axis is a crucial step in extracting dynamical properties from quantum Monte Carlo simulations. The average sp…
The Average Spectrum Method for Analytic Continuation: Efficient Blocked Modes Sampling and Dependence on Discretization Grid
Khaldoon Ghanem, Erik Koch
The average spectrum method is a promising approach for the analytic continuation of imaginary time or frequency data to the real axis. It determines the analytic continuation of n…
Thermally assisted ordering in Mott insulators
Hunter Sims, Eva Pavarini, Erik Koch
Ginzburg-Landau theory describes phase transitions as the competition between energy and entropy: The ordered phase has lower energy, while the disordered phase has larger entropy.…
Mechanism of structural phase transitions in KCrF3
Carmine Autieri, Erik Koch, Eva Pavarini
We study the origin of the cubic to tetragonal and tetragonal to monoclinic structural transitions in KCrF3, and the associated change in orbital order, paying particular attention…