#### Filter Results:

- Full text PDF available (23)

#### Publication Year

1996

2017

- This year (5)
- Last 5 years (19)
- Last 10 years (35)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

Learn More

- T S Grigera, V Martín-Mayor, G Parisi, P Verrocchio
- Physical review letters
- 2001

The topological nature of the disorder of glasses and supercooled liquids strongly affects their high-frequency dynamics. In order to understand its main features, we analytically studied a simple topologically disordered model, where the particles oscillate around randomly distributed centers, interacting through a generic pair potential. We present… (More)

- T S Grigera, V Martín-Mayor, G Parisi, P Verrocchio
- Nature
- 2003

Glasses are amorphous solids, in the sense that they display elastic behaviour. In crystalline solids, elasticity is associated with phonons, which are quantized vibrational excitations. Phonon-like excitations also exist in glasses at very high (terahertz; 10(12) Hz) frequencies; surprisingly, these persist in the supercooled liquids. A universal feature… (More)

- Francesco Belletti, Maria Cotallo, +20 authors Gianpaolo Zanier
- Computing in Science & Engineering
- 2009

Janus is a modular, massively parallel, and reconfigurable FPGA-based computing system. Each Janus module has one computational core and one host. Janus is tailored to, but not limited to, the needs of a class of hard scientific applications characterized by regular code structure, unconventional data-manipulation requirements, and a few Megabits database.… (More)

- Francesco Belletti, Filippo Mantovani, +17 authors Juan Jesus Ruiz-Lorenzo
- Computing in Science & Engineering
- 2006

With Ianus, a next-generation field-programmable gate array (FPGA)-based machine, the authors hope to build a system that can fully exploit the performance potential of FPGA devices. A software platform that simplifies Ianus programming will extend its intended application range to a wide class of interesting and computationally demanding problems.

- Victor Martin-Mayor, Itay Hen
- Scientific reports
- 2015

Recent advances in quantum technology have led to the development and manufacturing of experimental programmable quantum annealing optimizers that contain hundreds of quantum bits. These optimizers, commonly referred to as 'D-Wave' chips, promise to solve practical optimization problems potentially faster than conventional 'classical' computers. Attempts to… (More)

- J Burgy, M Mayr, V Martin-Mayor, A Moreo, E Dagotto
- Physical review letters
- 2001

The influence of quenched disorder on the competition between ordered states separated by a first-order transition is investigated. A phase diagram with features resembling quantum-critical behavior is observed, even using classical models. The low-temperature paramagnetic regime consists of coexisting ordered clusters, with randomly oriented order… (More)

- L A Fernández, V Martín-Mayor, P Verrocchio
- Physical review letters
- 2007

The phase diagram of soft spheres with size dispersion is studied by means of an optimized Monte Carlo algorithm which allows us to equilibrate below the kinetic glass transition for all size distributions. The system ubiquitously undergoes a first-order freezing transition. While for a small size dispersion the frozen phase has a crystalline structure,… (More)

- Raquel Alvarez Baños, Andres Cruz, +19 authors David Yllanes
- Proceedings of the National Academy of Sciences…
- 2012

Spin glasses are a longstanding model for the sluggish dynamics that appear at the glass transition. However, spin glasses differ from structural glasses in a crucial feature: they enjoy a time reversal symmetry. This symmetry can be broken by applying an external magnetic field, but embarrassingly little is known about the critical behavior of a spin glass… (More)

- Francesco Belletti, Maria Cotallo, +15 authors Jose Luis Velasco
- Computer Physics Communications
- 2008

We describe the hardwired implementation of algorithms for Monte Carlo simulations of a large class of spin models. We have implemented these algorithms as VHDL codes and we have mapped them onto a dedicated processor based on a large FPGA device. The measured performance on one such processor is comparable to O(100) carefully programmed high-end PCs: it… (More)

- L A Fernández, V Martín-Mayor, B Seoane, P Verrocchio
- Physical review. E, Statistical, nonlinear, and…
- 2010

We study a polydisperse soft-spheres model for colloids by means of microcanonical Monte Carlo simulations. We consider a polydispersity as high as 24%. Although solidification occurs, neither a crystal nor an amorphous state are thermodynamically stable. A finite size scaling analysis reveals that in the thermodynamic limit: (a) the fluid-solid transition… (More)