- Institute for Research in Fundamental SciencesIR578 papers
- Centre National de la Recherche ScientifiqueFR221 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT204 papers
- California Institute of TechnologyUS193 papers
- The Ohio State UniversityUS193 papers
- University of WarsawPL190 papers
- Isfahan University of TechnologyIR188 papers
- TU WienAT172 papers
- Universität HamburgDE172 papers
- University of California, Santa BarbaraUS164 papers
- University of Notre DameUS162 papers
- Texas A&M UniversityUS161 papers
82 papers · 1 filter
Ground state factorization of heterogeneous spin models in magnetic fields
J. Abouie, M. Rezai, A. Langari
The exact factorized ground state of a heterogeneous (ferrimagnetic) spin model which is composed of two spins () has been presented in detail. The Hamiltonian is not necessa…
Short range Coulomb correlations render massive Dirac fermions massless
M. Ebrahimkhas, S. A. Jafari
Tight binding electrons on a honeycomb lattice are described by an effective Dirac theory at low energies. Lowering symmetry by an alternate ionic potential () generates a singl…
On the error of estimating the sparsest solution of underdetermined linear systems
Massoud Babaie-Zadeh, Christian Jutten, Hosein Mohimani
Let A be an n by m matrix with m>n, and suppose that the underdetermined linear system As=x admits a sparse solution s0 for which ||s0||_0 < 1/2 spark(A). Such a sparse solution is…
Multispectral Palmprint Recognition Using a Hybrid Feature
Sina Akbari Mistani, Shervin Minaee, Emad Fatemizadeh
Personal identification problem has been a major field of research in recent years. Biometrics-based technologies that exploit fingerprints, iris, face, voice and palmprints, have…
Quantum phase transitions in the Kondo-necklace model: Perturbative continuous unitary transformation approach
S. Hemmatiyan, M. Rahimi Movassagh, N. Ghassemi +3
The Kondo-necklace model can describe magnetic low-energy limit of strongly correlated heavy fermion materials. There exist multiple energy scales in this model corresponding to ea…
Slave-spin approach to the strongly correlated systems
Masoud Mardani, Mohammad-Sadegh Vaezi, Abolhassan Vaezi
In this paper, we develop a new type of slave particle method which is similar to the slave rotor model except that the quantum rotor is substituted by a spin one slave particle. T…