Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Cobanera, Emilio"'
Publikováno v:
Physical Review A 110, 032207 (2024)
We provide a framework for understanding dynamical metastability in open many-body systems of free bosons, whereby the dynamical stability properties of the system in the infinite-size (thermodynamic) limit may sharply differ from those of any finite
Externí odkaz:
http://arxiv.org/abs/2405.08873
Publikováno v:
Physical Review B 108, 214312 (2023)
Tight bosonic analogs of free-fermionic symmetry-protected topological phases, and their associated edge-localized excitations, have long evaded the grasp of condensed-matter and AMO physics. In this work, building on our initial exploration [PRL 127
Externí odkaz:
http://arxiv.org/abs/2306.13711
Both the physics and applications of fermionic symmetry-protected topological phases rely heavily on a principle known as bulk-boundary correspondence, which predicts the emergence of protected boundary-localized energy excitations (boundary states)
Externí odkaz:
http://arxiv.org/abs/2304.03524
Autor:
Cupo, Andrew, Heath, Joshuah T., Cobanera, Emilio, Whitfield, James D., Ramanathan, Chandrasekhar, Viola, Lorenza
Optical conductivity measurements may provide access to distinct signatures of Floquet electronic phases, which are described theoretically by their quasienergy band structures. We characterize experimental observables of the Floquet graphene antidot
Externí odkaz:
http://arxiv.org/abs/2303.02261
Autor:
Cupo, Andrew, Cobanera, Emilio, Whitfield, James D., Ramanathan, Chandrasekhar, Viola, Lorenza
We establish the theoretical foundation of the Floquet graphene antidot lattice, whereby massless Dirac fermions are driven periodically by a circularly polarized electromagnetic field, while having their motion excluded from an array of nanoholes. T
Externí odkaz:
http://arxiv.org/abs/2108.06472
Publikováno v:
Phys. Rev. B 104, 165140 (2021)
Based on a recent generalization of Bloch's theorem, we present a Bloch ansatz for the Harper model with an arbitrary rational magnetic flux in various geometries, and solve the associated ansatz equations analytically. In the case of a cylinder and
Externí odkaz:
http://arxiv.org/abs/2107.10393
Publikováno v:
Physical Review Letters 127, 245701 (2021)
Majorana bosons, that is, tight bosonic analogs of the Majorana fermionic quasiparticles of condensed matter physics, are forbidden for gapped free bosonic matter within a standard Hamiltonian scenario. We show how the interplay between dynamical met
Externí odkaz:
http://arxiv.org/abs/2104.03985
Autor:
Xu, Qiao-Ru, Flynn, Vincent P., Alase, Abhijeet, Cobanera, Emilio, Viola, Lorenza, Ortiz, Gerardo
Publikováno v:
Phys. Rev. B 102, 125127 (2020)
We investigate topological properties and classification of mean-field theories of stable bosonic systems. Of the three standard classifying symmetries, only time-reversal represents a real symmetry of the many-boson system, while the other two, part
Externí odkaz:
http://arxiv.org/abs/2005.05986
Publikováno v:
Europhysics Letters 131 (2020) 40006
Number-non-conserving terms in quadratic bosonic Hamiltonians can induce unwanted dynamical instabilities. By exploiting the pseudo-Hermitian structure built in to these Hamiltonians, we show that as long as dynamical stability holds, one may always
Externí odkaz:
http://arxiv.org/abs/2004.07850
Publikováno v:
New Journal of Physics 22 (2020) 083004
Unlike their fermionic counterparts, the dynamics of Hermitian quadratic bosonic Hamiltonians are governed by a generally non-Hermitian Bogoliubov-de Gennes effective Hamiltonian. This underlying non-Hermiticity gives rise to a dynamically stable reg
Externí odkaz:
http://arxiv.org/abs/2003.03405