81 citations · 177 across the 7 of their papers we have counts for
5 papers · 1 filter
Phase Diagram of Mixed-Dimensional Anisotropic t-J-Models
Julius Dicke, Lukas Rammelmüller, Fabian Grusdt +1
We study the phase diagram of two different mixed-dimensional -models on the square lattice, in which the hopping amplitude is only nonzero along the -direc…
Pairing patterns in one-dimensional spin- and mass-imbalanced Fermi gases
Lukas Rammelmüller, Joaquín E. Drut, Jens Braun
We study spin- and mass-imbalanced mixtures of spin- fermions interacting via an attractive contact potential in one spatial dimension. Specifically, we address the i…
Complex Langevin and other approaches to the sign problem in quantum many-body physics
Casey E. Berger, Lukas Rammelmüller, Andrew C. Loheac +3
We review the theory and applications of complex stochastic quantization to the quantum many-body problem. Along the way, we present a brief overview of a number of ideas that eith…
Surmounting the sign problem in non-relativistic calculations: a case study with mass-imbalanced fermions
Lukas Rammelmüller, William J. Porter, Joaquín E. Drut +1
The calculation of the ground state and thermodynamics of mass-imbalanced Fermi systems is a challenging many-body problem. Even in one spatial dimension, analytic solutions are li…
Evolution from few- to many-body physics in one-dimensional Fermi systems: One- and two-body density matrices, and particle-partition entanglement
Lukas Rammelmüller, William J. Porter, Jens Braun +1
We study the evolution from few- to many-body physics of fermionic systems in one spatial dimension with attractive pairwise interactions. We determine the detailed form of the mom…