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Recent publications:
Numerical renormalization group study of two-channel three-impurity triangular clusters Phys. Rev. B 77, 245112 (2008)
Spectral properties of a hole coupled to optical phonons in the generalized t-J model Phys. Rev. B 77, 054519 (2008).
Quantum phase transitions in systems of parallel quantum dots Phys. Rev. B 76, 241305(R) (2007).
Zero-bias Conductance through coupled quantum dots Invited talk at: SLONANO2007,
10-12 October 2007, Ljubljana, Slovenija
Zero-bias Conductance through coupled quantum dots
Invited talk at: RTN NANO Fundamentals of Nanoelectronics,
2-7 September 2007, Portoroz, Slovenija
Numerical approach for the t-J Holstein Model
Invited talk at: Nato Advanced Research Workshop: Electron Transport in Nanosystems (ETN-2007 ) 17-21 September, 2007 ,Yalta , Ukraine
Spectral properties of the t-J-Holstein model in the low-doping limit
Work presented at: SNS2007, Sendai, Japan
Correlation effects in  conductance through coupled quantum dots and molecules
Invited talk at: Sixth International Conference on
New Theories, Discoveries and Applications of
Superconductors and Related Materials
,
(New3SC-6)
January 9-11, 2007, Sydney, Australia
Numerical approach to the low-doping regime of the t-J model Phys. Rev. B 76, 035121 (2007)
Thermal entanglement of qubit pairs on the Shastry-Sutherland lattice Phys. Rev. B 75, 205442 (2007)
Correlation effects in side-coupled quantum dots J. Phys.: Condens. Matter 19 255205 (2007)
Fermi-Liquid versus Non-Fermi-Liquid Behavior in Triple Quantum Dots Phys. Rev. Lett.  98, 047203 (2007)
Spin qubits in double quantum dots: Entanglement versus the Kondo effect Phys. Rev. B 74, 241305(R) (2006)
In-Gap Spin Excitations and Finite Triplet Lifetimes in the Dilute Singlet Ground State System SrCu2-xMgx(BO3)2 

Phys. Rev. Lett. 97, 247206 (2006) 
Spin-polaron excitations in a doped Shastry-Sutherland model  Phys. Rev. B 74, 174420 (2006)
Spin-charge separation and simultaneous spin and charge Kondo effect Phys. Rev. B 74, 224411 (2006)
Conductance through coupled quantum dots Invited talk at: XXX International Conference of Theoretical Physics: Electron Correlations in Nano- and Macrosystems, 9-14 September, 2006, Ustron, Poland
Conductance through coupled quantum dots Invited talk at
Mott's Physics in Nanowires and Quantum Dots, Gonville and Caius College, University of Cambridge, Cambridge, 31.7-2.8. (2006)

Multiple-impurity Anderson model for quantum dots coupled in parallel Phys. Rev. B 74, 045312 (2006)
Magnetic ordering and ergodicity of the spin system in the Cu2Te2O5X2 family of quantum magnets Phys. Rev. B 73, 214408 (2006)
Samir El Shawish doctoral thesis

Kondo effect in triple quantum dots Phys. Rev. B 73, 153307 (2006) 
Enhanced conductance through side-coupled double quantum dots Phys. Rev. B 73, 035332 (2006)
Conductance through coupled quantum dots Talk presented at Centro Atomico, Bariloche, Argentina, Dec. 2005.
Dynamic properties of the Shastry-Sutherland model at finite temperatures
Invited plenary talk at: VII Latin American Workshop on Magnetism, Magnetic Materials and Their Applications, 12-16 Dec. Renaca, Chile (2005).
Conductance through coupled quantum dots Invited talk at: Conference on Concepts in Electron Correlation, 25-30 Sept. Hvar, Croatia (2005).
Conductance through coupled quantum dots
Invited plenary talk at: Electron Correlation in New Materials and Nanosystems, 19-23 Sept.,Yalta, Ukraine (2005).
Dynamic spin structure factor of SrCu2(BO3)2 at finite temperature Phys. Rev. B 72, 184409 (2005)
Electronically Driven Ferroelectricity in the Extended Falicov-Kimball Model
Invited talk at:  New3SC, Chongqing, China (2004);
Int. J. Mod. Phys. 19, 525 (2005)
Crystal symmetry and high-magnetic-field specific heat of SrCu2(BO3)2 Phys. Rev. B 71, 092403 (2005)
Electron spin resonance of SrCu2(BO3)2 at high magnetic fields Phys. Rev. B 71, 014413 (2005)
Direct Observation of Itinerant Magnetism in the 5f-Electron System UTe
Phys. Rev. Lett. 93, 267205 (2004)
Crossover to non-Fermi-liquid spin dynamics in cuprates Phys. Rev. B 70, 224505 (2004)
Intermediate Coupling Theory of Electronic Ferroelectricity
Phys. Rev. Lett. 92, 187601 (2004)
Scaling of the Magnetic Response in Doped Antiferromagnets 
Phys. Rev. Lett. 92, 027002 (2004)
Thermodynamic Properties of the Generalized Falicov-Kimball Model 
Invited talk at: Dynamic Inhomogenities in Complex Systems, Bled, Slovenia 2003; J. Supercond., 17, 173 (2004)
Jahn-Teller and the Dynamics of Polaron Formation 
J. Supercond., 17, 193 (2004)
Itinerant ferromagnetism in the periodic Anderson model 
Phys. Rev. B 68, 214430 (2003)
Finite-temperature properties of the generalized Falicov-Kimball model 
Phys. Rev. B 68, 195112 (2003)
Magnetic fluctuations and resonant peak in cuprates: Towards a microscopic theory 
Phys. Rev. B 68, 054524 (2003)
Ferromagnetism in the strong hybridization regime of the periodic Anderson model 
Phys. Rev. B 68, 064403 (2003)
Microscopic mechanisms of dephasing due to electron-electron interactions  
Phys. Rev. B 68, 085313 (2003)
Thermodynamics of the planar Hubbard model  
Invited talk at New3SC, San Diego, USA 2003; Int. J. Mod. Phys. B 17, 3377 (2003)
Itinerant Ferromagnetism for Mixed Valence Systems 
Invited talk at 2nd International Workshop on Strongly Correlated Electrons, Hvar, Croatia 2002;
Thermodynamics of the planar Hubbard model  
Phys. Rev. B 67, 085103 (2003)
Numerical study of the E x e Jahn-Teller polaron and bipolaron  
Phys. Rev. B 67, 014301 (2003)
Segmented band mechanism for itinerant ferromagnetism  
Phys. Rev. Lett. 88, 187203 (2002)
Dimensionality effects on the Holstein polaron  
Phys. Rev. B 65, 174306 (2002)
Phase transitions in the mesoscopic superconducting square  
Phys. Rev. B 65, 012509 (2002)
Holstein and Frohlich bipolarons  
Invited talk at New3Sc, Honolulu, Hawaii; Physica C 364-365,141 (2001)
Statics and Dynamics of Coupled Electron-Phonon Systems 
Int. J. Mod. Phys. B 15 Nos. 19-20, 2707 (2001)
Bipolaron in the extended Holstein-Hubbard model 
Phys. Rev. B 64, 094507 (2001)
Ferromagnetism in the two-dimensional periodic Anderson model 
Phys. Rev. B 63, 184428 (2001)
Mobile Bipolaron 
Phys. Rev. Lett. 84, 3153 (2000)
Stripes in a three-chain Hubbard ladder 
Phys. Rev. B 61, 3251 (2000)
Mobile Bipolaron - Strong Coupling approach 
Invited talk at MTSC & SILS, Klosters, Switzerland,  2000, J.Supercond. 13, 999 (2000)
Finite-temperature properties of the 2D Kondo lattice model 
Phys. Rev. B 61, 2482 (2000)
Holstein polaron 
Phys. Rev. B 60, 1633 (1999)
Inelastic tunneling through mesoscopic structures 
Phys. Rev. B 59, 13087 (1999)
Effects of doping on spin correlations in the periodic Anderson model 
Phys. Rev. B 58, 6992 (1998)
Effects of doping on spin correlations in the periodic Anderson model 
Phys. Rev. B 58, 6992 (1998)
Inelastic Quantum Transport 
Phys. Rev. Lett. 79, 4874 (1997)
Effect of Inelastic Processes on Tunneling 
Phys. Rev. Lett. 75, 2566 (1995)
Spin diffusion of the t-J model 
Phys. Rev. B 51, 16083 (1995)
Random frustration in a two-dimensional spin-1/2 Heisenberg antiferromagnet 
Phys. Rev. B 51, 3616 (1995)
Direct calculation of spin stiffness for spin-1/2 Heisenberg models 
Phys. Rev. B 50, 3415 (1994)
Degenerate Anderson impurity model in the presence of spin-orbit and crystal-field splitting 
Phys. Rev. B 50, 10427 (1994)
Staggered-Field-Induced Hole Pairing in One-Dimensional Correlated System 
Phys. Rev. Lett. 69, 526 (1992)


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