4 papers
Non-thermal pairing glue of electrons in the steady state
Michele Pini, Christian H. Johansen, Francesco Piazza
The study of mechanisms for enhancing superconductivity has been a central topic in condensed matter physics due to the combination of fundamental and technological interests. One…
Many-body theory of false vacuum decay in quantum spin chains
Christian Johansen, Alessio Recati, Iacopo Carusotto +1
In this work we theoretically investigate the false vacuum decay process in a ferromagnetic quantum spin-1/2 chain. We develop a many-body theory describing the nucleation and the…
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…
The role of atomic interactions in cavity-induced continuous time crystals
Christian H. Johansen, Johannes Lang, Francesco Piazza
We consider continuous time-crystalline phases in dissipative many-body systems of atoms in cavities, focusing on the role of short-range interatomic interactions. First, we show t…