155 citations · 1.7k across the 63 of their papers we have counts for
4 papers · 1 filter
General coordinate invariance in quantum many-body systems
Tomas Brauner, Solomon Endlich, Alexander Monin +1
We extend the notion of general coordinate invariance to many-body, not necessarily relativistic, systems. As an application, we investigate nonrelativistic general covariance in G…
Effective Lagrangians for quantum many-body systems
Jens O. Andersen, Tomas Brauner, Christoph P. Hofmann +1
The low-energy and low-momentum dynamics of systems with a spontaneously broken continuous symmetry is dominated by the ensuing Nambu-Goldstone bosons. It can be conveniently encod…
Topological interactions of Nambu-Goldstone bosons in quantum many-body systems
Tomas Brauner, Sergej Moroz
We classify effective actions for Nambu-Goldstone (NG) bosons assuming absence of anomalies. Special attention is paid to Lagrangians invariant only up to a surface term, shown to…
Spontaneous breaking of spacetime symmetries and the inverse Higgs effect
Tomáš Brauner, Haruki Watanabe
It has been long known that when spacetime symmetry is spontaneously broken, some of the broken generators may not give rise to independent gapless, Nambu-Goldstone excitations. We…