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Publications Influence

Nature and strength of interlayer binding in graphite.

- L. Spanu, S. Sorella, G. Galli
- Physics, Medicine
- Physical review letters
- 26 October 2009

We compute the interlayer bonding properties of graphite using an ab initio many-body theory. We carry out variational and diffusion quantum Monte Carlo calculations and find an equilibrium… Expand

193 7- PDF

Semi-Metal-Insulator Transition of the Hubbard Model in the Honeycomb Lattice

- S. Sorella, E. Tosatti, E. Tosatti
- Physics
- 15 August 1992

Using quantum Monte Carlo and finite-size scaling for the Hubbard model, we find evidence of a zero-temperature transition between the nonmagnetic semi-metal and an antiferromagnetic insulator in the… Expand

187 7

Direct evidence for a gapless $Z_2$ spin liquid by frustrating Néel antiferromagnetism

- W. Hu, F. Becca, A. Parola, S. Sorella
- Physics
- 9 April 2013

By direct calculations of the spin gap in the frustrated Heisenberg model on the square lattice, with nearest- ($J_1$) and next-nearest-neighbor ($J_2$) super-exchange couplings, we provide a solid… Expand

80 7- PDF

Long-Range Néel Order in the Triangular Heisenberg Model

- L. Capriotti, A. Trumper, S. Sorella
- Physics
- 8 January 1999

We have studied the Heisenberg model on the triangular lattice using several Quantum Monte Carlo (QMC) techniques (up to 144 sites), and exact diagonalization (ED) (up to 36 sites). By studying the… Expand

214 5- PDF

GREEN FUNCTION MONTE CARLO WITH STOCHASTIC RECONFIGURATION

- S. Sorella
- Physics
- 10 March 1998

A new method for the stabilization of the sign problem in the Green Function Monte Carlo technique is proposed. The method is devised for real lattice Hamiltonians and is based on an iterative… Expand

70 5- PDF

Electron Localization in the Insulating State

- R. Resta, S. Sorella
- Physics
- 14 August 1998

The insulating state of matter is characterized by the excitation spectrum, but also by qualitative features of the electronic ground state. The insulating ground wavefunction in fact: (i) sustains… Expand

202 4- PDF

Stable liquid hydrogen at high pressure by a novel Ab initio molecular-dynamics calculation.

- C. Attaccalite, S. Sorella
- Physics, Medicine
- Physical review letters
- 10 February 2008

We introduce an efficient scheme for the molecular dynamics of electronic systems by means of quantum Monte Carlo. The evaluation of the (Born-Oppenheimer) forces acting on the ionic positions is… Expand

86 4- PDF

Generalized Lanczos algorithm for variational quantum Monte Carlo

- S. Sorella
- Physics
- 11 September 2000

We show that the standard Lanczos algorithm can be efficiently implemented statistically and self-consistently improved, using the stochastic reconfiguration method, which has been recently… Expand

159 4- PDF

Absence of a Spin Liquid Phase in the Hubbard Model on the Honeycomb Lattice

- S. Sorella, Y. Otsuka, S. Yunoki
- Physics, Medicine
- Scientific reports
- 7 July 2012

TLDR

148 4- PDF

Towards the solution of the many-electron problem in real materials: equation of state of the hydrogen chain with state-of-the-art many-body methods

- M. Motta, D. Ceperley, +18 authors Shiwei Zhang
- Physics
- 1 May 2017

We present numerical results for the equation of state of an infinite chain of hydrogen atoms. A variety of modern many-body methods are employed, with exhaustive cross-checks and validation.… Expand

106 3- PDF