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Disordered XY model: Effective medium theory and beyond
WEBMar 11, 2019 · We study the effect of uncorrelated random disorder on the temperature dependence of the superfluid stiffness in the two-dimensional classical XY model. By means of a perturbative expansion in the disorder potential, equivalent to the $T$ …
- Author: I. Maccari, L. Benfatto, C. Castellani
- Estimated Reading Time: 2 mins
- Publish Year: 2019
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Glassy vortex state in a two-dimensional disordered XY model
WEBJan 1, 1997 · The two-dimensional XY model with random phase shifts on bonds is studied. The analysis is based on a renormalization group for the replicated system. The model …
- Author: Stefan Scheidl
- Publish Year: 1997
WEBSep 25, 2015 · Here we show that the effective Ising interaction ex-ists in the XY model with the long-range interaction. It is generated in the third order of perturbation the-ory in …
WEBNov 2, 2016 · The quantum XY (DQXY) model, with Caldeira-Leggett form of dissipation, was intro-duced [1] to understand the superconductor to insulator transitions in 2 D lms …
WEBsubballistic transport occurs. The disordered XY model ( = 0, h 6= 0) also displays an interacting crossover in its transport. The clean limit has ballistic trans-port thanks to a …
Phys. Rev. B 58, 8667 (1998) - $\mathrm{XY}$ models with …
WEBOct 1, 1998 · The combined effect of disorder and symmetry-breaking fields on the two-dimensional XY model is examined. The study includes disorder in the interaction …
Fidelity Approach to the Disordered Quantum - Physical Review …
WEBWe study the random $XY$ spin chain in a transverse field by analyzing the susceptibility of the ground state fidelity, numerically evaluated through a standard mapping of the …
Phys. Rev. Lett. 81, 2558 (1998) - Disordered $\mathit{XY}
WEBSep 21, 1998 · We present a novel renormalization approach to 2D random XY models using direct and replicated Coulomb gas (CG) methods. By including fusion of …
Phys. Rev. B 93, 094206 (2016) - Multi-body quenched …
WEBMar 31, 2016 · The XY model with four-body quenched disordered interactions and its discrete p -clock proxy are studied on bipartite random graphs by means of the cavity …
Vortex glass transitions in disordered three-dimensional $XY
WEBOct 26, 2005 · The anisotropic frustrated three-dimensional (3D) $XY$ model with strong disorder in the coupling constants is studied as a model of a disordered …
WEBWe discuss the unusual critical behavior of a generalized XY model containing both 2ˇ-periodic and ˇ-periodic couplings between sites, allowing for ordinary vortices and half …
Phys. Rev. B 104, 214208 (2021) - Physical Review Link Manager
WEBDec 27, 2021 · We solve the problem of the locally correlated XY spin chain with an arbitrary degree of correlation and provide analytical strong-disorder renormalization …
WEBMar 28, 2011 · In this limit, the wavefunction is hierarchically organized into products of maximally entangled RVB-like singlets, and the entropy may be computed by …
Physical Review Link Manager
WEBPhysical Review Link Manager
Phys. Rev. E 105, 024111 (2022) - Phase transitions in $XY
WEBFeb 8, 2022 · We obtain a representation of the free energy of an X Y model on a fully connected graph with spins subjected to a random crystal field of strength D and with …
WEBDec 28, 2016 · Earlier Monte-Carlo calculations on the dissipative two-dimensional XY model are extended in several directions. We study the phase diagram and the …
WEBMar 22, 2021 · For uniform NN exchange, this model has previously been shown to transit from a long-range ordered ferromagnet into a Z 2 quantum spin liquid by virtue of the …
Domain wall renormalization group study of the $\\mathrm{XY}$ model ...
WEBAug 29, 2002 · The XY model with quenched random disorder is studied by a zero-temperature domain wall renormalization group method in two dimensions (2D) and three dimensions (3D). Instead of the usual phase representation we use the charge (vortex) representation to compute the domain wall, or defect, energy.
Strong randomness criticality in the scratched XY model
WEBMar 19, 2019 · We study the finite-temperature superfluid transition in a modified two-dimensional (2D) XY model with power-law-distributed “scratch”-like bond disorder. As …
Unified phase diagram for the three-dimensional $XY$ model of a …
WEBJun 3, 2009 · We carry out extensive Monte Carlo simulations of the three-dimensional uniformly frustrated X Y model with uncorrelated randomly perturbed couplings, as a …
Topological defects in the random-field XY model and the pinned …
WEBJun 1, 1996 · As a simplified model of randomly pinned vortex lattices or charge-density waves, we study the random-field XY model on square (d=2) and simple cubic (d=3) …
New Ordered Phases in a Class of Generalized $XY$ Models
WEBFeb 10, 2011 · Abstract. It is well known that the 2D X Y model exhibits an unusual infinite order phase transition belonging to the Kosterlitz-Thouless (KT) universality class. …
Tensor network approach to the two-dimensional fully frustrated …
WEBApr 20, 2022 · A general framework is proposed to solve the two-dimensional (2D) fully frustrated XY model for the Josephson junction arrays in a perpendicular magnetic field. …
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