Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Santoro, G E"'
Publikováno v:
New J. Phys. 21, 043048 (2019)
We show that a hierarchy of topological phases in one dimension -- a topological Devil's staircase -- can emerge at fractional filling fractions in interacting systems, whose single-particle band structure describes a topological or a crystalline top
Externí odkaz:
http://arxiv.org/abs/1810.02337
Publikováno v:
Phys. Rev. B 98, 235145 (2018)
We investigate the use of variational wave-functions that mimic stochastic recurrent neural networks, specifically, unrestricted Boltzmann machines, as guiding functions in projective quantum Monte Carlo (PQMC) simulations of quantum spin models. As
Externí odkaz:
http://arxiv.org/abs/1809.03562
Publikováno v:
Phys. Rev. A 97, 013634 (2018)
The realization of the Hofstadter model in a strongly anisotropic ladder geometry has now become possible in one-dimensional optical lattices with a synthetic dimension. In this work, we show how the Hofstadter Hamiltonian in such ladder configuratio
Externí odkaz:
http://arxiv.org/abs/1708.02929
Autor:
Kisiel, M., Pellegrini, F., Santoro, G. E., Samadashvili, M., Pawlak, R., Benassi, A., Gysin, U., Buzio, R., Gerbi, A., Meyer, E., Tosatti, E.
Publikováno v:
Physical Review Letters 115 046101 (2015)
The critical fluctuations at second order structural transitions in a bulk crystal may affect the dissipation of mechanical probes even if completely external to the crystal surface. Here we show that noncontact force microscope dissipation bears cle
Externí odkaz:
http://arxiv.org/abs/1506.01306
Publikováno v:
Tribology Lett. 48 41-49 (2012)
Non-equilibrium molecular dynamics simulations, of crucial importance in sliding friction, are hampered by arbitrariness and uncertainties in the removal of the frictionally generated Joule heat. Building upon general pre-existing formulation, we imp
Externí odkaz:
http://arxiv.org/abs/1208.5565
Publikováno v:
Phys. Rev. A 84, 012312 (2011)
The number of defects which are generated on crossing a quantum phase transition can be minimized by choosing properly designed time-dependent pulses. In this work we determine what are the ultimate limits of this optimization. We discuss under which
Externí odkaz:
http://arxiv.org/abs/1011.6634
Publikováno v:
J. Stat. Mech. (2010) L03001
The multiscale entanglement renormalization ansatz is applied to the study of boundary critical phenomena. We compute averages of local operators as a function of the distance from the boundary and the surface contribution to the ground state energy.
Externí odkaz:
http://arxiv.org/abs/0912.2893
Publikováno v:
Phys. Rev. Lett. 102, 125502 (2009)
We discovered in simulations of sliding coaxial nanotubes an unanticipated example of dynamical symmetry breaking taking place at the nanoscale. While both nanotubes are perfectly left-right symmetric and nonchiral, a nonzero angular momentum of phon
Externí odkaz:
http://arxiv.org/abs/0903.1584
We consider a model inspired by a metal break-junction hypothetically caught at its breaking point, where the non-adiabatic center-of-mass motion of the bridging atom can be treated as a two-level system. By means of Numerical Renormalization Group (
Externí odkaz:
http://arxiv.org/abs/0807.5057
Publikováno v:
J. Phys.: Condens. Matter 20, 224020 (2008)
A nonlinear model representing the tribological problem of a thin solid lubricant layer between two sliding periodic surfaces is used to analyze the phenomenon of hysteresis at pinning/depinning around a moving state rather than around a statically p
Externí odkaz:
http://arxiv.org/abs/0804.3909