10.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Sapienza University of RomeIT156 papers
- Scuola Internazionale Superiore di Studi AvanzatiIT146 papers
- University of InsubriaIT88 papers
- University of MilanIT85 papers
- University of TrentoIT85 papers
- Politecnico di TorinoIT78 papers
- University of FlorenceIT74 papers
- University of GenoaIT69 papers
- Centre National de la Recherche ScientifiqueFR65 papers
- The Abdus Salam International Centre for Theoretical Physics (ICTP)IT65 papers
- National Research CouncilLK58 papers
- University of SalernoIT56 papers
141 papers · 1 filter
Dynamics in a supercooled molecular liquid: Theory and Simulations
A. Rinaldi, F. Sciortino, P. Tartaglia
We report extensive simulations of liquid supercooled states for a simple three-sites molecular model, introduced by Lewis and Wahnstr"om [L. J. Lewis and G. Wahnstr"om, Phys. Rev.…
Phonons and related properties of extended systems from density-functional perturbation theory
S. Baroni, S. de Gironcoli, A. Dal Corso +1
This article reviews the current status of lattice-dynamical calculations in crystals, using density-functional perturbation theory, with emphasis on the plane-wave pseudo-potentia…
A macroscopically frustrated Ising model
M. Pasquini, M. Serva
A disordered spin glass model where both static and dynamical properties depend on macroscopic magnetizations is presented. These magnetizations interact via random couplings and,…
Stabilization of ratchet dynamics by weak periodic signals
Maria Barbi, Mario Salerno
We study the influence of weak periodic signals on the transport properties of underdamped ratchets. We find that the constant current intervals related to the ratchet, can be sign…
On the use of a heterogeneous MIMD-SIMD platform to simulate the dynamics of globular clusters with a central massive object
R. Capuzzo-Dolcetta, N. Pucello, V. Rosato +1
The dynamics of a large stellar (globular) cluster containing N=128,000 stars has been simulated by a direct summation (O(N)) method by using a heterogeneous platform. Prelimin…
Anomalous isotopic effect near the charge-ordering quantum criticality
S. Andergassen, S. Caprara, C. Di Castro +1
Within the Hubbard-Holstein model, we evaluate the various crossover lines marking the opening of pseudogaps in the cuprates, which, in our scenario, are ruled by the proximity to…
Determination of the (3x3)-Sn/Ge(111) structure by photoelectron diffraction
L. Petaccia, L. Floreano, M. Benes +6
At a coverage of about 1/3 monolayer, Sn deposited on Ge(111) below 550 forms a metastable (sqrt3 x sqrt3)R30 phase. This phase continuously and reversibly transforms into a (3x3)…
Topological Description of the Aging Dynamics in Simple Glasses
L. Angelani, R. Di Leonardo, G. Parisi +1
We numerically investigate the aging dynamics of a monatomic Lennard-Jones glass, focusing on the topology of the potential energy landscape which, to this aim, has been partitione…
Magnetic Field Effect for Two Electrons in a Two Dimensional Random Potential
Giuliano Benenti, Dima L. Shepelyansky
We study the problem of two particles with Coulomb repulsion in a two-dimensional disordered potential in the presence of a magnetic field. For the regime, when without interaction…
First-principles prediction of structure, energetics, formation enthalpy, elastic constants, polarization, and piezoelectric constants of AlN, GaN, and InN: comparison of local and gradient-corrected density-functional theory
A. Zoroddu, F. Bernardini, P. Ruggerone +1
A number of diverse bulk properties of the zincblende and wurtzite III-V nitrides AlN, GaN, and InN, are predicted from first principles within density functional theory using the…
Optimal design and quantum limit for second harmonic generation in semiconductor heterostructures
Guido Goldoni
The optimal design for infrared second harmonic generation (SHG) is determined for a GaAs-based quantum device using a recently developed genetic approach. Both compositional param…
Optimization of semiconductor quantum devices by evolutionary search
Guido Goldoni, Fausto Rossi
A novel simulation strategy is proposed to search for semiconductor quantum devices which are optimized with respect to required performances. Based on evolutionary programming, a…
Multiparticle Quantum Superposition and Stimulated Entanglement by Parity Selective Amplification of Entangled States
Francesco De Martini, Giovanni Di Giuseppe
A multiparticle quantum superposition state has been generated by a novel phase-selective parametric amplifier of an entangled two-photon state. This realization is expected to ope…
Auger spectroscopy of strongly correlated systems: present status and future trends
Claudio Verdozzi, Michele Cini, Andrea Marini
We review the Cini-Sawatzky approach to the line shape analysis of Auger CVV transitions, in its basic and original formulation. Then, several extensions of the theory are reviewed…
Coordinate Representation of the Two-Spinon wavefunction and Spinon Interaction
B. A. Bernevig, D. Giuliano, R. B. Laughlin
By deriving and studying the coordinate representation for the two-spinon wavefunction, we show that spinon excitations in the Haldane-Shastry model interact. The interaction is gi…
Accurate calculation of polarization-related quantities in semiconductors
F. Bernardini, V. Fiorentini, D. Vanderbilt
We demonstrate that polarization-related quantities in semiconductors can be predicted accurately from first-principles calculations using the appropriate approach to the problem,…
Quantum Computation with Ballistic Electrons
Radu Ionicioiu, Gehan Amaratunga, Florin Udrea
We describe a solid state implementation of a quantum computer using ballistic single electrons as flying qubits in 1D nanowires. We show how to implement all the steps required fo…
Acetylene on Si(100) from first principles: adsorption geometries, equilibrium coverages and thermal decomposition
Pier Luigi Silvestrelli, Flavio Toigo, Francesco Ancilotto
Adsorption of acetylene on Si(100) is studied from first principles. We find that, among a number of possible adsorption configurations, the lowest-energy structure is a ``bridge''…
Spinon Attraction in Spin-1/2 Antiferromagnetic Chains
B. A. Bernevig, D. Giuliano, R. B. Laughlin
We derive the representation of the two-spinon wavefunction for the Haldane-Shastry model in terms of the spinon coordinates. This result allows us to rigorously analyze spinon int…
Shell Effects and Phase Separation in a Trapped Multi-Component Fermi System
L. Salasnich, A. Parola, L. Reatto
Shell effects in the coordinate space can be seen with degenerate Fermi vapors in non-uniform trapping potentials. In particular, below the Fermi temperature, the density profile o…
Detection of Geometric Phases in Superconducting Nanocircuits
Giuseppe Falci, Rosario Fazio, G. Massimo Palma +2
When a quantum mechanical system undergoes an adiabatic cyclic evolution it acquires a geometrical phase factor in addition to the dynamical one. This effect has been demonstrated…
The order-disorder transition of the (3x3)Sn/Ge(111) phase
L. Floreano, D. Cvetko, G. Bavdek +2
Growing attention has been drawn in the past years to the α-phase (1/3 monolayer) of Sn on Ge(111), which undergoes a transition from the low temperature (3x3) phase to the room te…
Quantum Phase Transitions and Vortex Dynamics in Superconducting Networks
Rosario Fazio, Herre van der Zant
Josephson junction arrays are ideal model systems where a variety of phenomena, phase transitions, frustration effects, vortex dynamics, chaos, to mention a few of them, can be stu…
Distribution of resonance widths in localized tight-binding models
M. Terraneo, I. Guarneri
We numerically analyze the distribution of scattering resonance widths in one- and quasi-one dimensional tight binding models, in the localized regime. We detect and discuss an alg…