Exact anomalous current fluctuations in a deterministic interacting model

Ž Krajnik, J Schmidt, V Pasquier, E Ilievski, T Prosen - Physical Review Letters, 2022 - APS
We analytically compute the full counting statistics of charge transfer in a classical
automaton of interacting charged particles. Deriving a closed-form expression for the …

Critical and tricritical singularities from small-scale Monte Carlo simulations: the Blume–Capel model in two dimensions

L Moueddene, NG Fytas, Y Holovatch… - Journal of Statistical …, 2024 - iopscience.iop.org
We show that accurate insights into the critical properties of the Blume–Capel model at two
dimensions can be deduced from Monte Carlo simulations, even for small system sizes …

Lee-Yang theory of the superradiant phase transition in the open Dicke model

F Brange, N Lambert, F Nori, C Flindt - Physical Review Research, 2024 - APS
The Dicke model describes an ensemble of two-level atoms that are coupled to a confined
light mode of an optical cavity. Above a critical coupling, the cavity becomes macroscopically …

Universal anomalous fluctuations in charged single-file systems

Ž Krajnik, J Schmidt, V Pasquier, T Prosen… - Physical Review …, 2024 - APS
Introducing a general class of one-dimensional single-file systems (meaning that particle
crossings are prohibited) of interacting hardcore particles with internal degrees of freedom …

Exploring Lee-Yang and Fisher zeros in the 2D Ising model through multipoint Padé approximants

S Singh, M Cipressi, F Di Renzo - Physical Review D, 2024 - APS
We present a numerical calculation of the Lee-Yang and Fisher zeros of the 2D Ising model
using multipoint Padé approximants. We perform simulations for the 2D Ising model with …

Reliable estimation of the radius of convergence in finite density QCD

M Giordano, A Pásztor - Physical Review D, 2019 - APS
We study different estimators of the radius of convergence of the Taylor series of the
pressure in finite density QCD. We adopt the approach in which the radius of convergence is …

Determination of universal critical exponents using Lee-Yang theory

A Deger, C Flindt - Physical Review Research, 2019 - APS
Lee-Yang zeros are points in the complex plane of an external control parameter at which
the partition function vanishes for a many-body system of finite size. In the thermodynamic …

Dynamical signatures of discontinuous phase transitions: How phase coexistence determines exponential versus power-law scaling

K Ptaszyński, M Esposito - Physical Review E, 2024 - APS
There are conflicting reports in the literature regarding the finite-size scaling of the
Liouvillian gap and dynamical fluctuations at discontinuous phase transitions, with various …

Lee-Yang theory of the two-dimensional quantum Ising model

PM Vecsei, JL Lado, C Flindt - Physical Review B, 2022 - APS
Determining the phase diagram of interacting quantum many-body systems is an important
task for a wide range of problems such as the understanding and design of quantum …

Lee-Yang theory of criticality in interacting quantum many-body systems

T Kist, JL Lado, C Flindt - Physical Review Research, 2021 - APS
Quantum phase transitions are a ubiquitous many-body phenomenon that occurs in a wide
range of physical systems, including superconductors, quantum spin liquids, and topological …