Guy Cohen

PhD in Theoretical Chemical Physics
Tel Aviv University
Dissertation Topic: Non equilibrium Dynamics in Quantum Impurity Models: Numerically Exact Methods and the Role of Memory. 

Guy was an Azrieli Fellow during his graduate studies at Tel-Aviv University with Prof. Eran Rabani. His research topics ranged from the theoretical investigation of molecular spintronic devices and the optical properties of nano-particles, to the development of numerical methods for treating non-equilibrium quantum impurity models.

Currently, He is a postdoctoral researcher at Columbia University in the groups of Prof. David R. Reichman and Prof. Andrew J. Millis, where he works on the development of novel solutions for the theory of strongly-correlated systems and their application to material science and chemistry.

During 2015-16 Guy is due to establish a new research group at Tel Aviv University's School of Chemistry, which he will be joining as a faculty member. The group will focus on computational and theoretical aspects of quantum many-body systems out of equilibrium.

In a personal perspective:
"I feel very fortunate to have participated in the Azrieli Fellows Program. My experience has been entirely positive and I would recommend it to anyone: I have found  the opportunity to broaden my horizons in such a diverse and friendly environment to be invaluable for my growth as a scientist. Also, I have enjoyed meeting great people and having challenging, interesting conversations about a surprising variety of topics one would never encounter otherwise."   

Journals:

• E. Wilner, H. Wang, G. Cohen, M. Thoss, E. Rabani. 2013. Multiple steady-states in nonequilibrium quantum systems with electron-phonon interactions. Physical Review B. Accepted for publication 

• G. Cohen, E.Y. Wilner, E. Rabani. 2013. Generalized projected dynamics for non-system observables of non-equilibrium quantum impurity models. New Journal of Physics 15 (7): 073018 

• G. Cohen, E. Gull, D.R. Reichman, A.J. Millis, E. Rabani. 2013. Numerically exact long-time magnetization dynamics at the nonequilibrium Kondo crossover of the Anderson impurity model. Phys. Rev. B 87 (19): 195108 

• D.W.H. Swenson, G. Cohen, E. Rabani. 2012. A semiclassical model for the non-equilibrium quantum transport of a many-electron Hamiltonian coupled to phonons. Molecular Physics 110 (9-10): 743-750. 

• D. Mocatta, G. Cohen, J Schattner, O. Millo, E Rabani and U. Banin. 2011. Heavily Doped Semiconductor Nanocrystal Quantum Dots. Science 332: 77-8. 

• G. Cohen, E. Rabani. 2011. Memory effects in nonequilibrium quantum impurity models. Physical Review B 84 (7): 075150 

• D.W.H Swenson, T.Levy, G. Cohen, E. Rabani, and W.H Miller. 2011. Application of a semiclassical model for the second-quantized many-electron Hamiltonian to nonequilibrium quantum transport: The resonant level model. J. Chem. Phys. 134: 164103. 

• T. Levy, G. Cohen and E. Rabani. 2010. Simulating lattice spin models on Graphic Processing Units J. Chem. Theory. Comput. 6: 3293-3301. 

• R. Costi, G. Cohen, A. Salant, E. Rabani, and U. Banin. 2009. Electrostatic Force Microscopy study of Single Au-CdSe Hybrid Nanodumbbells: Evidence for Light Induced Charge Separation, Nano. Lett. 9(5): 2031-2039.                                          
• G. Cohen and E. Rabani. 2008. Negative Differential Spin Conductance by Population Switching. Mol. Phys. 106(2-4): 341-347. 
                                                                  
• G. Cohen, O. Hod, and E. Rabani. 2007. Constructing Spin Interference Devices from Nanometric Rings. Phys. Rev. B 76(23): 235120.   
 
 
Conference Papers:

• G. Cohen, E. Gull, D. Reichman, A. Millis, E. Rabani. Numerically Exact Long Time Magnetization Dynamics Near the Nonequilibrium Kondo Regime. Presented at the annual meeting of the American Physical Society. March 18–22, 2013; Baltimore, Maryland, USA 


Patents:

 G. Cohen, O. Millo, D. Mocatta, E. Rabani, U. Banin. Heavily doped semiconductor nanoparticles. WO Patent No. 2,012,111,009. August 2012
"As an Azrieli fellow, I partivipated in the Azrieli Institutes for Educational Empowerment's program, where I volunteered in two schools. The experience was certainly personally rewarding, as one might expect; however, it also offered me a rare and fascinating glimpse into a part section of Israel's public education system that few academics have the occasion to come into contact with. I also volunteered with the Dov Lautman Unit for Science Oriented Youth, which offers a unique and highly enjoyable opportunity to infect the next generation with an enthusiasm for science."