Dr. Alberto Nocera
Postdoctoral Research Associate

University of Tennessee
Department of Physics and Astronomy
Knoxville, TN 37996, USA
Office Phone: +1 (865) 974-5954

Oak Ridge National Laboratory
Materials Science and Technology Division
Oak Ridge, TN 37831, USA


Curriculum Vitae (pdf)

ResearcherID: A-6329-2016
Publication list on arXiv.org

Research interests
I am a theoretical condensed matter physicist.
My research activity focuses on the study of strongly correlated materials, where the physics is dominated by the interplay between electronic, spin, orbital, and vibrational degrees of freedom. Such materials include superconductors, organic charge-transfer solids, Mott and charge density wave insulators, and others. I am specially interested in investigating the exotic phases of matter that might emerge in these materials, and characterizing them through their spectral excitations and transport properties.

I am currently working on research projects in other fields such as cold atomic physics, nanoelectronics, and pump-probe spectroscopy.
My expertise includes both numerical methods such as the  Density Matrix Renormalization Group (DMRG), and analytical techniques, such as the Keldysh formalism within non-equilibrium Green’s functions theory.

Recent Publications

() "
Multi-spinon and holon excitations probed by resonant inelastic x-ray scattering on doped one-dimensional antiferromagnets"
  U. Kumar, A. Nocera, E. Dagotto, S. Johnston arXiv:1803.01955 (Submitted on New Journal of Physics)

(1) "Finite temperature dynamics of the Mott insulating Hubbard chain"
       A. Nocera
, F. H. L. Essler, A. E. Feiguin,
Phys. Rev. B 97, 045146 (2018)

(3) "Signatures of pairing in the magnetic excitation spectrum of strongly correlated ladders"
A. Nocera, N. Patel, E. Dagotto, and G. Alvarez
Phys. Rev. B 96, 205120 (2017)

(2) "Density matrix renormalization group study of a three-orbital Hubbard model with spin-orbit coupling in one dimension"
N. Kaushal, J. Herbrych, A. Nocera, G. Alvarez, A. Moreo, F. A. Reboredo, E. Dagotto, Phys. Rev. B 96, 155111 (2017)

(4) "Pairing Tendencies in a Two-orbital Hubbard Model in One Dimension"
N. Patel, A. Nocera, G. Alvarez, A. Moreo, and E. Dagotto, Phys. Rev. B 96, 024520 (2017)

Recent Talks

Signatures of pairing in the magnetic excitation spectrum of strongly correlated quasi-one dimensional systems” FisMat2017, Trieste, Italy

Useful Links
Free and open source implementation of the DMRG algorithm.

ITensor: (Intelligent Tensor) Library: a free library for performing tensor and matrix-product state based DMRG calculations written in C++.

Useful references on Keldysh Green's function theory:

"Green's Function Techniques in the Treatment of Quantum Transport at the Molecular Scale", D. A. Ryndyk, R. Gutierrez, B. Song, G. Cuniberti.

"Quantum kinetics in transport and optics of semiconductors", H. Haug, A.P. Jauho,
M. Cardona, 2008 Springer.

"Keldysh technique and non-linear sigma-model: basic principles and applications", A. Kamenev, A. Levchenko.