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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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22 papers · 2 filters
An alternative order-parameter for non-equilibrium generalized spin models on honeycomb lattices
Francisco Sastre, Malte Henkel
An alternative definition for the order-parameter is proposed, for a family of non-equilibrium spin models with up-down symmetry on honeycomb lattices, and which depends on two par…
Marginal dimensions of the Potts model with invisible states
M. Krasnytska, P. Sarkanych, B. Berche +2
We reconsider the mean-field Potts model with interacting and non-interacting (invisible) states. The model was recently introduced to explain discrepancies between theoret…
Inhomogeneous field theory inside the arctic circle
Nicolas Allegra, Jérôme Dubail, Jean-Marie Stéphan +1
Motivated by quantum quenches in spin chains, a one-dimensional toy-model of fermionic particles evolving in imaginary-time from a domain-wall initial state is solved. The main int…
On the role of Fourier modes in finite-size scaling above the upper critical dimension
E. J. Flores-Sola, B. Berche, R. Kenna +1
Renormalization-group theory stands, since over 40 years, as one of the pillars of modern physics. As such, there should be no remaining doubt regarding its validity. However, fini…
Lindblad dynamics of a quantum spherical spin
Sascha Wald, Malte Henkel
The coherent quantum dynamics of a single bosonic spin variable, subject to a constraint derived from the quantum spherical model of a ferromagnet, and coupled to an external heat…
Simple-average expressions for shear-stress relaxation modulus
J. P. Wittmer, H. Xu, J. Baschnagel
Focusing on isotropic elastic networks we propose a novel simple-average expression for the computational determination of the shear-stress relaxation modulus $…
Partition function zeros for the Ising model on complete graphs and on annealed scale-free networks
M. Krasnytska, B. Berche, Yu. Holovatch +1
We analyze the partition function of the Ising model on graphs of two different types: complete graphs, wherein all nodes are mutually linked and annealed scale-free networks for w…
Antiferromagnetic majority voter model on square and honeycomb lattices
Francisco Sastre, Malte Henkel
An antiferromagnetic version of the well-known majority voter model on square and honeycomb lattices is proposed. Monte Carlo simulations give evidence for a continuous order-disor…
Compressibility and pressure correlations in isotropic solids and fluids
J. P. Wittmer, H. Xu, P. Polinsak +4
Presenting simple coarse-grained models of isotropic solids and fluids in , and dimensions we investigate the correlations of the instantaneous pressure and its ideal…
Fluctuation-dissipation relation between shear stress relaxation modulus and shear stress autocorrelation function revisited
J. P. Wittmer, H. Xu, O. Benzerara +1
The shear stress relaxation modulus may be determined from the shear stress after switching on a tiny step strain or by inverse Fourier transformation of the stor…
Shear stress relaxation and ensemble transformation of shear stress autocorrelation functions revisited
J. P. Wittmer, H. Xu, J. Baschnagel
We revisit the relation between the shear stress relaxation modulus , computed at finite shear strain , and the shear stress autocorrelation functions a…
Shear-strain and shear-stress fluctuations in generalized Gaussian ensemble simulations of isotropic elastic networks
J. P. Wittmer, I. Kriuchevskyi, J. Baschnagel +1
Shear-strain and shear-stress correlations in isotropic elastic bodies are investigated both theoretically and numerically at either imposed mean shear-stress () or shear-…
Defect production in quench from current-carrying non-equilibrium state
Dragi Karevski, Rosemary J. Harris
We consider the defect production of a quantum system, initially prepared in a current-carrying non-equilibrium state, during its unitary driving through a quantum critical point.…
Inhomogeneous quenches in a fermionic chain: exact results
Jacopo Viti, Jean-Marie Stéphan, Jérôme Dubail +1
We consider the non-equilibrium physics induced by joining together two tight binding fermionic chains to form a single chain. Before being joined, each chain is in a many-fermion…
Violation of Lee-Yang circle theorem for Ising phase transitions on complex networks
M. Krasnytska, B. Berche, Yu. Holovatch +1
The Ising model on annealed complex networks with degree distribution decaying algebraically as has a second-order phase transition at finite temperature if $λ> 3…
Numerical evidence of the double-Griffiths phase of the random quantum Ashkin-Teller chain
Christophe Chatelain, Dimitrios Voliotis
The random quantum Ashkin-Teller chain is studied numerically by means of time-dependent Density-Matrix Renormalization Group. The critical lines are estimated as the location of t…
Critical Casimir Force between Inhomogeneous Boundaries
Jerome Dubail, Raoul Santachiara, Thorsten Emig
To study the critical Casimir force between chemically structured boundaries immersed in a binary mixture at its demixing transition, we consider a strip of Ising spins subject to…
Records for the number of distinct sites visited by a random walk on the fully-connected lattice
L. Turban
We consider a random walk on the fully-connected lattice with sites and study the time evolution of the number of distinct sites visited by the walker on a subset with …
Monte-Carlo study of anisotropic scaling generated by disorder
Oleg Vasilyev, Bertrand Berche, Maxym Dudka +1
We analyze the critical properties of the three-dimensional Ising model with linear parallel extended defects. Such a form of disorder produces two distinct correlation lengths, a…
Quantum phase transition in the spin-anisotropic quantum spherical model
Sascha Wald, Malte Henkel
Motivated by an analogy with the spin anisotropies in the quantum XY chain and its reformulation in terms of spin-less Majorana fermions, its bosonic analogue, the spin-anisotropic…
Critical behavior in lattice models with two symmetric absorbing state
Áttila L. Rodrigues, Christophe Chatelain, Tânia Tomé +1
We analyze nonequilibrium lattice models with up-down symmetry and two absorbing states by mean-field approximations and numerical simulations in two and three dimensions. The phas…
Spherical model of growing interfaces
Malte Henkel, Xavier Durang
Building on an analogy between the ageing behaviour of magnetic systems and growing interfaces, the Arcetri model, a new exactly solvable model for growing interfaces is introduced…