High order Fuchsian equations for the square lattice Ising model: [PDF]
, 2009 We consider the Fuchsian linear differential equation obtained (modulo a prime) for , the five-particle contribution to the susceptibility of the square lattice Ising model.
Alin Bostan +6 more
semanticscholar +1 more source
SciPost Physics, 2017 The Algorithms for Lattice Fermions package provides a general code for the finite temperature auxiliary field quantum Monte Carlo algorithm. The code is engineered to be able to simulate any model that can be written in terms of sums of single-body ...
Martin Bercx, Florian Goth, Johannes S. Hofmann, Fakher F. Assaad
doaj +1 more source
Simulating excitation spectra with projected entangled-pair states [PDF]
, 2018 We develop and benchmark a technique for simulating excitation spectra of generic two-dimensional quantum lattice systems using the framework of projected entangled-pair states (PEPS).
Haegeman, Jutho +2 more
core +2 more sources
Fisher zeros and persistent temporal oscillations in nonunitary quantum circuits
Physical Review Research, 2022 We present a quantum circuit with measurements and postselection that exhibits a panoply of space- and/or time-ordered phases from ferromagnetic order to spin-density waves to time crystals. Unlike the time crystals that have been found in unitary models,
Sankhya Basu +4 more
doaj +1 more source
Square lattice Ising model susceptibility: connection matrices and singular behaviour of χ (3) and χ (4) [PDF]
, 2005 We present a simple, but efficient, way to calculate connection matrices between sets of independent local solutions, defined at two neighbouring singular points, of Fuchsian differential equations of quite large orders, such as those found for the third
N. Zenine +3 more
semanticscholar +1 more source
Efficient variational contraction of two-dimensional tensor networks with a non-trivial unit cell [PDF]
Quantum, 2020 Tensor network states provide an efficient class of states that faithfully capture strongly correlated quantum models and systems in classical statistical mechanics.
A. Nietner +4 more
doaj +1 more source
Exact finite-size corrections for the square-lattice Ising model with Brascamp-Kunz boundary conditions. [PDF]
Physical review. E, Statistical, nonlinear, and soft matter physics, 2002 Finite-size scaling, finite-size corrections, and boundary effects for critical systems have attracted much attention in recent years. Here we derive exact finite-size corrections for the free energy F and the specific heat C of the critical ...
N. Izmailian, K. Oganesyan, Chin-Kun Hu
semanticscholar +1 more source
Tensor network simulation for the frustrated J_{1}-J_{2} Ising model on the square lattice. [PDF]
Physical Review E, 2021 By using extensive tensor network calculations, we map out the phase diagram of the frustrated J_{1}-J_{2} Ising model on the square lattice. In particular, we focus on the cases with controversy in the phase diagram, especially the stripe transition in ...
Hong Li, Li‐Ping Yang
semanticscholar +1 more source
Fermions as generalized Ising models
Nuclear Physics B, 2017 We establish a general map between Grassmann functionals for fermions and probability or weight distributions for Ising spins. The equivalence between the two formulations is based on identical transfer matrices and expectation values of products of ...
C. Wetterich
doaj +1 more source
Analysis of the phase transition for the Ising model on the frustrated square lattice [PDF]
Physical Review B, 2011 10 pages, 4 ...
Kalz, A., Honecker, A., Moliner, M.
openaire +5 more sources