110 citations · 286 across the 10 of their papers we have counts for
10 papers
The fate of the Fermi surface coupled to a single-wave-vector cavity mode
Bernhard Frank, Michele Pini, Johannes Lang +1
The electromagnetic field of standing-wave or ring cavities induces a spatially modulated, infinite-range interaction between atoms in an ultracold Fermi gas, with a single wavelen…
Spectral functions of the strongly interacting 3D Fermi gas
Christian H. Johansen, Bernhard Frank, Johannes Lang
Computing dynamical properties of strongly interacting quantum many-body systems poses a major challenge to theoretical approaches. Usually, one has to resort to numerical analytic…
Marginal Fermi liquid at magnetic quantum criticality from dimensional confinement
Bernhard Frank, Zi Hong Liu, Fakher F. Assaad +2
Metallic quantum criticality is frequently discussed as a source for non-Fermi liquid behavior, but controlled theoretical treatments are scarce. Here we identify and study a novel…
Magnetic quantum phase transition in a metallic Kondo heterostructure
Zi Hong Liu, Bernhard Frank, Lukas Janssen +2
We consider a two-dimensional quantum spin system described by a Heisenberg model that is embedded in a three-dimensional metal. The two systems couple via an antiferromagnetic Kon…
scaling and IR/UV-mixing in Ising-nematic quantum critical metals
Bernhard Frank, Francesco Piazza
The instability of a Fermi surface against Ising nematic order destroys the quasiparticle character of the low-energy degrees of freedom. Therefore, observables exhibit deviations…
Quantum critical thermal transport in the unitary Fermi gas
Bernhard Frank, Wilhelm Zwerger, Tilman Enss
Strongly correlated systems are often associated with an underlying quantum critical point which governs their behavior in the finite temperature phase diagram. Their thermodynamic…
Fast logarithmic Fourier-Laplace transform of nonintegrable functions
Johannes Lang, Bernhard Frank
We present an efficient and very flexible numerical fast Fourier-Laplace transform, that extends the logarithmic Fourier transform (LFT) introduced by Haines and Jones [Geophys. J.…
Dynamical Quantum Phase Transitions: A Geometric Picture
Johannes Lang, Bernhard Frank, Jad C. Halimeh
The Loschmidt echo (LE) is a purely quantum-mechanical quantity whose determination for large quantum many-body systems requires an exceptionally precise knowledge of all eigenstat…
Universal phase diagram and scaling functions of imbalanced Fermi gases
Bernhard Frank, Johannes Lang, Wilhelm Zwerger
We discuss the phase diagram and the universal scaling functions of attractive Fermi gases at finite imbalance. The existence of a quantum multicritical point for the unitary gas a…
Concurrence of dynamical phase transitions at finite temperature in the fully connected transverse-field Ising model
Johannes Lang, Bernhard Frank, Jad C. Halimeh
We construct the finite-temperature dynamical phase diagram of the fully connected transverse-field Ising model from the vantage point of two disparate concepts of dynamical critic…