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- Sapienza University of RomeIT416 papers
- Institute for Complex SystemsIT322 papers
- Centre National de la Recherche ScientifiqueFR227 papers
- University of Rome Tor VergataIT202 papers
- University of PisaIT173 papers
- University of FlorenceIT157 papers
- Istituto Officina dei MaterialiIT150 papers
- Scuola Internazionale Superiore di Studi AvanzatiIT135 papers
- National Institute of OpticsIT122 papers
- Istituto Nazionale di Fisica NucleareIT117 papers
- Politecnico di MilanoIT110 papers
- Istituto di Analisi dei Sistemi ed Informatica Antonio RubertiIT103 papers
107 papers · 1 filter
Topological Gap Opening without Symmetry Breaking from Dynamical Quantum Correlations
Francesca Paoletti, Laura Fanfarillo, Massimo Capone +1
Topological phase transitions are typically associated with the formation of gapless states. Spontaneous symmetry breaking can lead to a gap opening thereby obliterating the topolo…
Thermodynamic Stability at the Two-Particle Level
A. Kowalski, M. Reitner, L. Del Re +6
We show how the stability conditions for a system of interacting fermions that conventionally involve variations of thermodynamic potentials can be rewritten in terms of one- and t…
Bose-Einstein condensation of a two-magnon bound state in a spin-one triangular lattice
Jieming Sheng, Jia-Wei Mei, Le Wang +31
In ordered magnets, the elementary excitations are spin waves (magnons), which obey Bose-Einstein statistics. Similarly to Cooper pairs in superconductors, magnons can be paired in…
A Jastrow wave function for the spin-1 Heisenberg chain: the string order revealed by the mapping to the classical Coulomb gas
Davide Piccioni, Christian Apostoli, Federico Becca +4
We show that a two-body Jastrow wave function is able to capture the ground-state properties of the antiferromagnetic Heisenberg chain with the single-ion anisotropy term, in…
Time-dependent ghost-Gutzwiller non-equilibrium dynamics
Daniele Guerci, Massimo Capone, Nicola Lanatà
We introduce the time-dependent ghost Gutzwiller approximation (td-gGA), a non-equilibrium extension of the ghost Gutzwiller approximation (gGA), a powerful variational approach wh…
Spin-orbital mechanisms for negative thermal expansion in Ca2RuO
Wojciech Brzezicki, Filomena Forte, Canio Noce +2
The phenomenon of negative thermal expansion (NTE) deals with the increase of the lattice parameters and the volume of the unit cell when the material is thermally cooled. The NTE…