3 papers
quant-ph2026
Decoupling band topology from criticality in bosonic systems
Mariam Ughrelidze, Lorenza Viola, Emilio Cobanera
A new understanding of criticality in systems described by quadratic bosonic Hamiltonians (QBHs) ties the emergence of long-range correlations to boundaries of dynamical, not therm…
quant-ph2026
Quantum criticality beyond thermodynamic stability
Mariam Ughrelidze, Vincent P. Flynn, Emilio Cobanera +1
For a many-body system in equilibrium, described by a thermodynamically stable Hamiltonian, quantum criticality is associated with structural changes of the many-body ground state.…
quant-ph2026
Many-body symmetry-protected zero boundary modes of synthetic photo-magnonic crystals
Alan Gardin, Emilio Cobanera, Giuseppe C. Tettamanzi
The topological classification of insulators and superconductors, the "ten-fold way", is grounded on fermionic many-body symmetries and has had a dramatic impact on many fields of…