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cond-mat.str-el2015★ 44 cited

Variational wave functions for the Heisenberg model on the anisotropic triangular lattice: Spin liquids and spiral orders

Elaheh Ghorbani, Luca F. Tocchio, Federico Becca

By using variational wave functions and quantum Monte Carlo techniques, we investigate the complete phase diagram of the Heisenberg model on the anisotropic triangular lattice, whe…

cond-mat.str-el2015★ 43 cited

The quench action approach in finite integrable spin chains

Vincenzo Alba, Pasquale Calabrese

We consider the problem of constructing the stationary state following a quantum quench, using the exact overlaps for finite size integrable models. We focus on the isotropic Heise…

cond-mat.str-el2015★ 18 cited

Non-equilibrium and non-homogeneous phenomena around a first-order quantum phase transition

Lorenzo Del Re, Michele Fabrizio, Erio Tosatti

We consider non-equilibrium phenomena in a very simple model that displays a zero-temperature first-order phase transition. The quantum Ising model with a four-spin exchange is ado…

cond-mat.str-el2015★ 56 cited

Effective Theory and Breakdown of Conformal Symmetry in a Long-Range Quantum Chain

Luca Lepori, Davide Vodola, Guido Pupillo +2

We deal with the problem of studying the effective theories and the symmetries of long-range models around critical points. We focus in particular on the Kitaev chain with long-ran…

cond-mat.str-el2015★ 9 cited

Spontaneous symmetry breaking in correlated wave functions

Ryui Kaneko, Luca F. Tocchio, Roser Valentí +2

We show that Jastrow-Slater wave functions, in which a density-density Jastrow factor is applied onto an uncorrelated fermionic state, may possess long-range order even when all sy…

cond-mat.str-el2015★ 200 cited

Universal quantum criticality in the metal-insulator transition of two-dimensional interacting Dirac electrons

Yuichi Otsuka, Seiji Yunoki, Sandro Sorella

The metal-insulator transition has been a subject of intense research since Nevil Mott has first proposed that the metallic behavior of interacting electrons could turn to the insu…